2020 NEC OVERVIEW

[Music] this presentation is on the 2020 National Electrical Code and I have to say that this is not a all-inclusive package this is what I am calling the benchmark changes in the 2020 the total presentation in PowerPoint form is probably about 700 slides so there's a tremendous amount of changes what I've included in this video is the changes that I believe mostly affect the average electrician doing residential commercial type electrical installations we're going to be covering GFI protection the disconnecting changes for residential single-family homes and surge protection and several other things so let's get started on the 2020 NEC changes okay so here we go the benchmark changes for this code cycle this presentation is not an all-inclusive review of all changes but a concentration of specific changes that will affect a large portion of electrical workers companies and those are who are doing the most common installations on a daily basis so you'll notice we jumped right into chapter 2 there are changes in chapter 1 and a lot of them are oftentimes things moving around we change this word we move that around we change the definition of moved it over here and not to say that there wasn't some important things in there but you know I've really kind of just tried to condense this into a finite presentation so wiring protection chapter 2 and we're diving right into what I believe is one of the biggest sections of changes in the 2020 and that is ground fault circuit interrupter protection they've made a wide variety of additions to this particular section so jumping in to 10.8 measurements for GFCI protection when determining if GFCI protection is required and a measurement is involved the distance from receptacle is required to be measured as the shortest path the supply cord of an appliance connected to the receptacle would follow without piercing a floor wall ceiling or fixed barrier or the shortest path without passing through a door excuse me passing through a window and then the revision removed door and doorway from the list of obstacles that should be should not be measured through for this code cycle a receptacle under the kitchen sink behind the cabinet door for the garbage disposal will once again require GFCI protection you may recall the GFCI protection requirements for that in particular receptacle were removed in the 17 NEC and that really kind of created the question I think a lot of contractors run let's say they were on a 20 amp circuit to the counter they hit a switch there and drop 12:3 down to the to the receptacle underneath the sink and you put a switched receptacle in there the top part switch that's where you put an appliance pigtail on and hook up your disposal and then you put an appliance pay tail on your your dishwasher and the bottom part is hot all the time that's how we work it well and then you would GFI protect it originally well into 17 well you don't have to GFI protect the disposal now didn't say you couldn't just said you didn't have to so it was kind of a non-event and now here they are flipping it back all 125 volts through 250 volt receptacles installed within six feet from the top inside edge of the bowl of a sink requires GFCI protection including bedroom receptacles in our example here is if you have a receptacle that is located as you can see here's our this is our bathroom and there's our obligatory receptacle on the vanity area and then let's say this is a doorway here and there's a receptacle right here in the wall inside the bedroom well that is still within six feet of that sink therefore that is required to be ground fault circuit interrupter protect it that's going to change your G of CI protection now - ten nine eight a GFCI protection for personnel dwelling unit GFCI protection has been expanded to all 125 volt through 250 volt receptacles supplied by single-phase branch circuits rated 150 volts or less to ground installed in the specified areas of - 10.8 a previously was all 125 volt single-phase 15 and 20 amp receptacles installed in 10 specific locations bathrooms kitchens laundries etc the addition of up to 250 volt receptacles and removing the amperage limitations of 15 and 20 will provide GFCI protection to most receptacles commonly used in the specified areas of - 10.8 a the dryer receptacle we knew this was coming 250 volts 480 receptacles presents similar shock hazards and substantiation submitted for this change demonstrated the need for GCI protection for greater than the hundred 25 volt receptacle changes similar to the 2017 NEC changes of - 10.8 B so essentially this that means that in your laundry room the washer has to be GFI protected so does the dryer now so now you're buying a two pole ground fault circuit interrupter breaker that is going to change the price of your job there's you know this is just the beginning so - 10.8 a 5 GFCI in dwelling unit basements GFCI protection now required for all dwelling unit basements not just unfinished portions of basements you know the rule of thumb always was you got concrete underneath your feet probably needs GFI protection carpet no and it's no longer the case GFCI is now required for all 125 volt through to 450 volt receptacles in both an unfinished basement and a finished basement intended as a habitable space this includes basements that are finished out to be a habitable room or space such as a bedroom exercise room game room etc conductive floor circuit surfaces may exist in finished and finished basements and basements whether finished or unfinished are prone to moisture including flooding a prevalent moisture hazard exists with a person being in contact with a damp floor independent of flooring type and then interacting with the electrical system so the bottom line is this whether you have you know a total unfinished basement like this all open you've got a concrete floor nothing but open joist of course GFI protection now the change is stating even if you have this area here now this particular picture has a bar in it like a kitchen area it looks like there's a sink there of course that would be GFI protected but even out here in the open area bedroom area you know man cave whatever it is GFCI protection now required to 10.8 a 11 and let me mention one thing I believe in the 17 they didn't really make it as clear as I think as it should be that some pumps are required to be GFCI protected big back and forth fight about that it's been going on for a couple of years there is a reference and I don't know that it gets covered in this presentation but I wanted to say this that it is clarified in the 2020 NEC that they want GFCI protection for those sump pumps and while I understand the whole scenario of we got a piece of equipment that is on a GFI you have a lightning storm moved through and accidentally causes that GFCI a trip which is not impossible and your floods your basement or even worse the floods your basement and your three states away on vacation and you come home to a flooded basement yeah I mean all those scenarios are that's a reality but at the same time you have a submerged motor in a tub of water so you know it's two sides to that story to ten nine eight eleven GFCI for indoor damp and wet locations GFCI protection is now required at indoor damp and wet locations of dwelling units covers areas considered a damp or wet location not within six feet of a sink bathtub or shower area so it was kind of covering that little gray area I will guess you would say changes will GFCI protection for all 125 and 250 volt receptacles supplied by a single-phase branch circuit rated 150 volts or less to ground installed in indoor damp or wet locations regardless of the room or areas of the dwelling unit this includes areas such as mud rooms when those sinks or an indoor area where animals like dogs are washed so first of all if you have one of these in your house good for you but you know people do and you may have you know an area where you know you're washing off shoes you know you live in a farm and you have an area where you're washing things off you know that that's there they're trying to keep from having these loopholes of GFCI protection I have to say if I was wiring this house and I was you know analyzing this area here and I didn't have prints that told me exactly what to do am I gonna GFCI protection even anything that's gonna be in that area of course I am you know that's that's you know that's just really being a good electrician and a good designer of the system that's going to be used in this the structure - ten nine eight be other than dwelling units new GFCI requirements at non dwelling unit locations were added for damp locations accessory buildings laundry areas areas around bathtubs and shower stalls - ten nine eight B six indoor damp locations was added to the existing GFCI requirement for indoor wet non dwelling unit locations for clarity and consistency as shock hazards and a damp locations is similar to a wet location - 10 that 88 is non dwelling unit accessory buildings adding to existing GFCI provisions for garages service bays and similar areas other than vehicle exhibition halls and showrooms those always get a free pass to ten any be a continued accessory buildings can have some degree of shock hazard as garages and vehicles service basins deserve the same level of GFCI protection - 10 that 8b and Levin GFCI protection added for receptacles installed in non dwelling unit laundry areas you have a laundry area that is you know like in a laundromat you know that's a non dwelling unit still need GFI protection still possibility of water present you know I've said this many times GFCI protection really started out in the residential sector actually started out I think in 1968 and was for swimming pools swimming pool lights and it's it has moved into the commercial sector over the years and has become more and more prevalent you know and it's the invent you ala t is everything is going to be ground-fault protected and possibly arkfall protectable that's a whole nother story 210 out eight b12 GOC a protection edit for receptacles installed within six feet of the outside edge of an on dwelling unit bathtub or shower stall shower stalls and bath tubs can exist in commercial industrial at locations showers and stuff at the local fitness center outside of a locker room or bathroom for a variety of purposes such as decontamination and safety applications so yeah even if you've got you know shower areas you've got areas like this you know warehouses things like that you know we're still looking at potential for dampness ground fault protection is waiting its way into being a part of just electrical systems in general what we find against as electricians is overloads arc faults ground faults short circuits that's what we're you know that's what we're always trying to avoid and make sure the system doesn't have in it ground fault circuit interrupter protection is a very big thing and that's why we are seeing this a lot of people look at this as this is a way for industry and manufacturers to sell us more stuff I'm sure they are for profit industries however the reality is is that often times changes in the code are brought forth because they are determined to be needed because there has been a fatality and injury something like that that's where those things come from to tendineae be to GFCI for kitchens and more additional language was added to clarify that area is not defined as a kitchen with a sink and permanent provisions for either food or prep or cooking have the same potential for shock hazards as a kitchen this would include areas such as ice-cream parlors coffee shops Starbucks and smoothie stores these areas typically have stainless steel counter tops highly conductive and/or stainless steel appliances but no permanent provisions for cooking and these facilities have at least the same potential for shock hazards as a kitchen so and again you know as an electrician if I was wiring this space and you have obviously a wet location a lot of things going on there am i going to ground fall protect this this equipment in this area regardless of what the code says the code is the bare minimum that does not mean if it doesn't say to do that that you can't do that you know this is going you know this is really what it should have been all along you know going above and beyond in the years past is what I would have done this is really kind of catching up but yes those areas GFCI protection 210 that dot 8d GFCI protection for specific appliances new list item D correlates the requirements found in for 22.5 B type of GFCI protection for appliances and refers to the list of Geo CI requirements for appliances in for 22.5 a this provides continued consistency as the list of appliances requiring GFCI protection is modified in future code additions hmm sometimes they'll refer to things that are that are coming ahead often times they will stair steps of things the last cold cycle I believe in the PowerPoint that I got from the International Association of electrical inspectors that stated that there were changes that were hey we're noting this now but it's not going to be effective until the 2020 previous GFCI requirements for dwelling unit dishwashers was moved from two ten nine eight to four 22.5 a seven which now covers all dishwashers and that makes sense although I think a reference maybe into ten nine eight would have been good but they moved it to ten nine eight D attempts to build a bridge for GFCI requirements from two ten nine eight 4:22 you got to know to look at 4:22 that's the problem where the appliance is a vending machine and GFCI protection is not provided as an integral part of the attachment plug in other words they have an inline GFI on the pigtail that's coming off the appliance or located within the supply cord not more than 12 inches from the attachment plug the branch circuits supplying vending machines is required to have GFCI protection so dishwashers GFCI protected big water box a lot of water going on there and then these a lot of potential for liquids and you know grandpa protections not just for wet locations it also is for pieces of equipment that are sitting for long periods of time without maintenance and can malfunction ground fault protection can prevent against you know hazards that could occur in that type of scenario - - 10.8 a GFCI for equipment requiring servicing GFCI protection now required for all receptacles required by - 10 dot 63 for HVAC equipment indoor service equipment indoor equipment requiring dedicated equipment space and 210 dot 63 expanded for this cold cycle these receptacles can be located up to 25 feet away from the equipment and the use of an extension cord is not uncommon increasing the likelihood of shock hazard so and here's some examples you know I mean they've got a service here another one here you have equipment here that you're supposed to have something adjacent to it and then of course the air conditioning units now speaking of air conditioning units - 10.8 F GFCI for outdoor outlets outlets air quotes GFCI protection is now required on dwelling unit outdoor outlets supplied by a single-phase branch circuit rated 150 volts or less to ground and 50 amps or less this would include 200 40 volt HVAC unit outlets so now they are calling a disconnect and outlet exemption provided for branch circuit dedicated to Dyson and snow melting equipment they always get a free pass and outdoor lighting outlets so coach lights outdoor lighting outlets are not under this heading other than those covered in 210 out HC for crawlspace lighting outlets that's not an outdoor outlet I guess they consider that outside the main structure outdoor dwelling unit outlets typically serve loads that are comprised of two and a 40 volt motor driven pumps or air compressors that are in operation for many years without maintenance therefore as I was just describing ground fall protection for equipment like this can protect from something going awry the ground fall protection could cause this to enable this to be turned off before a hazardous situation occurred I think this has potential for problems utilizing the correct type of go5 for this because you know let's face it when you have a circuit going to an air conditioning unit yeah more likely have let's say this is a 30 amp 240 volt circuit and this area here you would run a 10 - so you got a black and a white being used as face conductors of course and then you have a bare neutral I could see this being breakers tripping nuisance tripping things like that and GFI is not liking it so there's more than likely going to be a learning curve on this and I don't think I mentioned this in the beginning of the presentation but there has been already this is in May of twenty twenty twenty that this presentation is being made and there has been a great deal of pushback already in regards to adopting the 2020 NEC you know I continue to teach on it because as I'd said if you watch the 2017 video I think I made this statement the NFPA is not going to redact this this document it's out there and it's going to stay out there and there are some who have already adopted it and even if let's say the state of Kentucky or Indiana whoever don't adopt it in 2023 there'll be another version this is a stair-step to it you have to be thinking lineal up stepping up going to the next level and this is a part of it you really you needed to know the seventeen you needed to know the fourteen you need to know the twenty twenty and then to twenty twenty-three you need to know the the course of events leading up to where we are today in the code because the next set of changes won't list these changes you know it's already been discussed to 10.11 c3 bathroom branch circuits there's an unusual piece here additional text added clarifies that only bathroom receptacles required to be supplied by 20 amp rated bathroom receptacle outlet branch circuits our receptacle outlets required by two 10.50 2d and any other receptacles installed in the bathroom that serve a countertop or work surface to 10.50 2d requires at least one receptacle outlet installed within three feet of the outside edge of each base and indwelling unit bathrooms the previous provisions were being interpreted to mandate any receptacles installed in a dwelling unit bathroom to be supplied by the dedicated 20 and brand bathroom receptacle branch circuit only even receptacles not required and I have done this and I've got a graphic here that really explains it you know if you have receptacles in the bathroom here of course these are within three feet of the sink so you got to have a receptacle up here on the vanity and then you have receptacles down low here that are really just general-purpose you know you got a really big bathroom and maybe you just want a receptacle down here that you're going to use for a space heater that receptacle is not required to be on that branch circuit GFI protection yes branch circuit the the identified branch circuit that would be required for the bathroom receptacles it's not required to be on that just the receptacles that are on the the countertop space they're required by - Tendai 52d and or server countertops or work surface and then these down here are not required but to 10.50 2d and does not serve a countertop now to 10.11 c4 this is another dividing of what was required in the same area garage branch circuits garage receptacle Atlas 120 volt 20 amp branch circuits are only required for the receptacles required by 2/10 o 52 g14 attached garages and in detached garages with electric power section 210 952 g one requires at least one receptacle outlet to be installed in each vehicle Bay of an attached garage and in each detached garage with electric power with these required receptacle outlets located not more than five and a half feet above the floor the garage receptacle outlets not required by 2/10 o 52 G one do not have to be supplied by this dedicated 120 volt 20 amp branch circuit or even be supplied by a 20 amp rated branch circuit it could be a 15 amp rated branch circuit what they are saying is this the receptacles that I have shown here these are the identified required now we know if you're familiar with the previous Co cycle per car space we have to have a receptacle in that car space before that and I believe that changes in the 14 but before that you can you can have a garage a three-car garage and you could put one receptacle in the middle of that back wall that garage and you were Co compliant then at least a code cycle ago they decided now if you need to have a receptacle per car space and they've led on to that they they're adding that in because of car chargers you know electric cars and that sort of thing that is just ever moving towards us but what this particular statement is making is that these receptacles are required these receptacles can be in here but once you have met that per car space requirement you can have these other receptacles and they don't have to be on that 20 amp circuit this could be a 15 amp circuit now again GFI protection yes but the the 20 amp receptacle requirement and that was the thing and I think in the last code cycle they changed was that he needs to be a 20 amp circuit for the receptacles in the garage rather than a 15 amp who the heck's put in a 15 amp circuit in the garage obviously that area requires at least a 20 amp circuit for whatever type of loads could be and you know the average garage that certainly only makes sense but you can have receptacles that are 15 or 20 amp and then you can have the then you have to have your required ones and then lastly the note up here at the very top this is something that says exception outdoor receptacles can be included this is something that they they pulled out of the code I think in the 14 and said no you can't can't connect receptacles from the garage onto receptacles outdoors and that was kind of a practice here at least locally regionally is that you would put a circuit in for the garage receptacles but one GFI receptacle in and then jump out and catch all the receptacles on the outside of the house that's a circuit receptacles in the garage and receptacles on the outside of the house that the homeowner had a GFI the tripped you could say go to the garage push the reset button and that type of thing and solve the problem in the 14 that took that out and the 17 they said okay I guess you can you can do that they call it an exception that they put it back in to 10.12 see AFCI for patient sleeping rooms and nursing homes and limited care facilities first of all I want to say as far as this residential single-family dwelling houses they did not change AFC out protection disco cycle I was kind of surprised they didn't make any changes the last code cycle although in the 17 they the original proposals were they were going to arkfall protect everything in the house and then right before they released the 2017 NEC they removed it and it just ended up being I think the only thing that changed was our fault protection for hotels and motels now this code cycle the only big change is the this one that we're looking at here there was one other change that they make a statement that if you are doing a work in an existing hotel and they add you add receptacles in a hotel then those receptacles have to be arkfall protected I don't even address that with a slide in this particular PowerPoint that seems like a very specific type job this AFCI protection has been expanded to patients sleeping rooms in nursing homes and limited care facilities AFC a protection was expanded to include guest rooms and guest suites of hotels and motels during the 17 NEC revision cycle as these areas are similar to dwelling units similar rooms with comparable uses exist at patient sleeping rooms and nursing homes and limited care facilities AFCI technology will provide some same protection for marking false to the occupants of these rooms that is a forded occupants of conventional dwelling units and guest rooms and guest suites of hotels and motels and I will say this our fault protection gets a whole lot of flack there has certainly been problems with them some appliances don't like them most people kind of know the story there's been issues in and out for the last 15 years however as I had said Ark false ground faults overloads these are the things that are problems and that caused electrical hazards caused fires arc faults are a problem technology is advancing this is going to be a part of our life and this is going to be a part of the systems we install and its ever moving forward so we're gonna have to learn to live with it and is to protect these areas now a new subject 230 that 67 surge protection new requirements added for surge protection on all services at dwelling units the surge protection device or SPD must be an integral part of the service equipment or located immediately adjacent to the service equipment exception permits alternate location providing an SPD is located at each next level distribution equipment downstream toward the load this SPD required to be either a type 1 or a type 2 SPD this applies to replacement of residential service equipment as well so you go in and do a service change there and I want you to put this put surge protection on and I think this is a good good change what the what they are doing here is this is going to protect against lightning and line surges from the power company that's this and I believe more and more with really sensitive technology that we have homes I think that this is this is really required and it's not a big dollar change you know these these cert suppressors like to see on here I mean the prices are going to vary but you can buy these for you know hundred bucks so you don't really add an outlandish amount of money in cost here to the installation now two thirty that's seventy one maximum number of disconnects this is a very interesting piece here and this is a this is a big change this can really when you're doing multifamily dwellings this is a big change revision eliminates more than one service disconnecting means in the same panel board or other enclosure continues to retain the sixth service disconnect rule for services with the up to six service disconnects require to be installed in separate enclosures only previous provisions permitted service disconnecting means to consist of not more than six switches or sets of circuit breakers mounted in a single enclosure or in a group of separate enclosures revision takes into consideration the challenge is created for electrical workers when encountering a panel board with more than one service disconnecting means and the same enclosure this is exposure to other circuit parts mechanical parts inside of the equipment that's what they're talking about this is an NFPA 70e thing in other words electrical safety I explained a little bit more in a second a single service disconnect with in-service equipment provides additional protection from electric shock hazards where barriers are in place over the exposed energized conductors terminals to eliminate any live exposed parts barriers required to be provided to eliminate live exposed parts for switchboards switchgear and panel boards in accordance with 230 dot 62 C this was 408 3a - this is what they're talking about if you look in this piece of gear here you know first of all we have a you know what we used to call garden packs is a massive 16 meter Center it's within the six switch rule so in theory you have a six unit apartment building smack one of these on the side of it bringing all your service cables into it you've got six sub feeds going out you do not have to have a main disconnect it means historically I should say because you can shut this down within six movements you can shut this entire service down in the event of an emergency you know fire emergency something like that what all I just read to you is stating that is as you look inside of this meter can you'll notice that all of this is really kind of all big open area and what happens is is that you have let's say you're doing service inside of this or you're trying to get inside of here and maybe connect something replace a bad main breaker sub breaker in there and you open that up you're exposed to live parts you're exposed to the live parts of the meter and there's really no getting around that they're not isolated so what that is saying is that there has to be a main disconnecting means essentially this is the way I've interpreted it and I'm getting this through what's stated here what's in the analysis of the changes by the IAE I and also there's a great video on YouTube from Mike hold that talks about 230 . 71 on the 20/20 recommend that it's it's not super long and they have a great discussion on this and this is essentially a part of NFPA 70e saying hey you can't get inside of this thing without really being exposed to live parts and and it's a safety issue so they're saying this type of meter base you're gonna have to have a disconnect it means on the outside of it what I think is going to happen you got my opinion when you watch these videos what I think is going to happen is first of all the disconnect thing may last for a period of time I think the manufacturers will redesign these cans to where you have isolated areas got a surprise they haven't done that to begin with switch gear and equipment now is being redesigned and rethink to be rethought we'll say in the sense of safety for example a larger pieces of switch gear have venting xand flaps I'll call them in other words they're designed to work to deflect art flash and art blast away from an individual that might be working in the equipment and that is really just technology moving forward and I think this is a code statement that is really that it's making a statement to the manufacturers hey you need to redesign your product I think this will still be around but I think that it's good you're gonna see a change in end sometimes the code makes a statement and in the industry has to catch up we saw that with art Falls to 32 85 this is another big change in again residential sector emergency disconnects new requirement added requiring an emergency disconnect at a readily accessible outdoor location outdoor location for dwelling units new outdoor emergency disconnecting requirement primarily based upon providing first responders and outdoor accessible emergency or service disconnecting means during an emergency situations such as a fire gas leak structural damage flooding etc access service disconnect it means for first responders is very challenging when the service disconnect is installed in an indoor location of a dwelling unit area such as a basement requiring first responders to enter a potentially hazardous environment such as a burning building to find and then activate the service disconnect is not a safe practice so essentially this they're now going to be requiring on every home you're putting a 200 amp service let's say in the picture on the left here you're putting a 200 amp service on the house normally you might be just running you know the service entrance conductors come down hit an LV go down to the basement we'll say you hit a 200 amp panel with a main breaker you are now going to be required to install a disconnect on the outside of the house the picture here on the right-hand side this is that's a 200 amp main you do have breaker space underneath it which that's nice in case you need to feed something you wanted to feed a fountain out in the yard or a post line or something like that we got power there that's nice however that's not required you can have just a disconnecting means and a and then going your sub feed down to the back what that means now is that now you're gonna have to separate your grounds in your neutrals your panel that's in your basement or wherever it is in the structure is now a sub panel you know this is your mate your first means of disconnect this is where all your grounding is going to go you know your your grounding and bonding conductors your gas bike back your all that that's that's going here because this the first means of disconnect so that's going to change your design that's going to change your conductors going in because now your four wire so you've got that going on you're gonna have to run that down into the basement we'll say and this is for you know the house is on fire the fire department shows up I have talked to firefighters over the years and some are trained in how to pull a meter and some are not some are allowed to and some are not but obviously turning the power off in a burning building is crucial to safety for the for the firemen to get in there and deal with stuff so this makes sense one of the things that I see is that I is the homeowner I'm in the house I have an emergency and I want to shut the power off I would much prefer to run down to the basement and turn the main off in my panel rather than run outside let's say it's in the middle of the night and I'm running outside and you know half dressed and running around and trying to find the key to that disconnect that you know you're going to have because you're gonna lock that disconnect because that's the other problem is that if people are going to if people want to rob you probably the first thing you're going to do is go out and see if they can turn off the power to the house you know that's that's a that looks like a prank in the making but you know locking it and that's going to help put a good lock on it but if somebody wanted to rob you they can cut the lock off but I get it it is a safety concern and you know in the event that there is a fire then yes they need to be able to turn it off and pulling the meter on a building that's on fire under load for an untrained person you know that's a pretty dicey scenario too so this is big these are I think the one that you're looking at here in the picture I think this is probably 150 200 bucks something like that so you know it's it's an increase to the cost for sure article 310 ampacity tables there's a huge amount of reorganization of article 310 I just wanted to point out one thing here and we're actually getting to the end of the presentation here like I said I didn't cover everything but this is a it's kind of a almost funny change for code psych electric code cycle they had called Table three 10.15 B 16 which is the you know the number one ampacity table it was Table three ten to fifteen B sixteen formally Table three ten and they finally changed it just to Table three 10.16 I don't know why it had to go so many code cycles like that and then they finally just say hey we're just gonna call it this but they finally made that change the ampacity tables will simply be titled as Table three 10.16 through 21 and new sections were added at three 10.16 through three 10.20 one that now refer to the ampacity tables and contain conditions of use previously found in the table headings the ampacity table headings were shortened and a note referring to the section language was added to each table all of the notes to the tables were retained at the bottom of the ampacity tables and here's just a quick shot as I said I mean this is a just a section of it so a huge table that we use a lot to deal with our ampacity x' this is pretty much home base so yeah I think it's a good thing it's kind of funny as a teacher I've learned to say through 10.15 b16 really fast because I've been doing it for a long time and now they've shortened it to that I have to change my ways three 10.12 single-phase dwelling services and feeders this is another good change and now go back and some of this you may have heard if you watch the 17 update video that I've done but just very briefly in 2011 there was this table called three 10.15 B seven where if you wanted to find the ampacity you're going to build a 200 amp service you need to find the conductor size for that service you go to this little quickie table boom there it is gonna use two I done then in 2014 they removed that table and added a 83% factor for calculation on your total lo calculation for dwellings they added that into the pie then in 17 they put the table back in the annexes and now in 2020 they put it back into the main body of the code so non dwelling units service and pasty tables from informative annex D example d7 added at 3 10.12 they put it in a different spot text added indicating table 3 10 to 12 permitted to be used if there are no temperature correction or adjustment factors needed and that was what their concern was is that those were being ignored this unit this well in unit table and/or information has been a part of the code since 1956 until 2014 I would not want to be on that code backing panel because I would imagine they got all kind of flack about this these higher and pass the allowances permitted primarily due to the diversity loads associated with dwelling units that's when if you do the dwelling unit calculation that's what they mean the diversity loads the loads are very varied very varied and there there are a lot of D rating that's allowed you know per the NEC that's really what they're stating here removed from the code in the 14 NEC and replaced with an ampacity reduction of not less than 83% of the service of or feeder rating of the ampacity values of then table 3 10.15 v16 no dwelling units service ain't passed the table from informative annex D example d7 is added at 3 10.12 and reintroduced to the code for the 2017 in DC but it was located in the annex i guess because they couldn't just turn around the next cold cycle and go ok we made a mistake and put it back it took them two cycles to go we made a mistake and put it back for ease of use putting this 63 year old table back in article 310 makes sense and complements the reorganization of article 310 for the 2020 NEC revision cycle yeah I tell you what I I know some guys that are on the coke making panels and I've had discussions with him before about what happens and it's very interesting you know like I'd said earlier a lot of this stuff comes from unfortunate incidents that happened in the field out in electrical systems and buildings and whatever but yeah there's a lot of people on these coal making panels that make these decisions you better believe there are some political things going on there's some jockeying for position type things people that probably just want stuff in the code book so they can say I put that in there or I champion that yeah that happens but don't let that statement make you lose sight of the fact that there are changes in advances in our trade that have come about over time and we are getting better at installing what is the most dangerous system in any structure the electrical system you know you got you know in a home you got gas piping sure the electrical system is the one that permeates practically every wall in a structure I don't care what kind of structure it is and certainly potential to cause fires you know you have on the news regularly you see whether it's house fires what caused it my electrical system now I think that part of the time that that is a default answer because they can't figure out what caused it and then sometimes I think it is you know that's that's just a thing that we need to keep in the forefront of our thinking and not getting a hurry of what we're doing because what we're installing is potentially very dangerous so wrapping up here at Table three 10.12 single-phase dwelling unit services let me go through the top section here for one family dwellings and the individual drawing units of two family and multi-family dwellings service and feeder conductor supplied by a single-phase 120 240 volt system shall be permitted to be sized in accordance with three 10.12 A through D single-phase feeder conductors consisting of two ungrounded conductors and the neutral conductor from a 208 Y 120 volt system permitted to be sized in accordance with e 10.12 a through c 208 a voltage single-phase dwelling units they added the 208 in there because that service could be potentially a three-phase service coming to a structure for a apartment building condos something like that and then maybe you're pulling a phase and B phase off to go feed sub feeds to an apartment unit that at that point that's a single-phase service so that brought us into you know being a part of this table and this is this scenario so then down the left here you got your services your feet or ratings hunter all the way up to four hundred amp you can see it drops out that there's your copper and there's your alumina if no adjustment or correction factors are required this table shall be permitted to be applied okay so these are the primary changes in the 2020 NEC they are there are many many more it is recommended you purchase the NFPA 70 2020 handbook or the IAE IAE eye analysis of the change it changes for 2020 in the book on the left there are on the right I should say the handbook that's this book this is a pretty good sized book it's a great book has all the expanded statements of what the changes were really is very helpful in interpreting those strongly recommend you know if you're an estimator or you know getting into being a project manager that's a great book to have highly useful and of course the analysis of the changes the analysis of the changes is a book that's put out by the international association of electrical inspectors and it is a great book that really expands what the changes are and gives further explanation of it similar to the the the handbook but this is a great book in this book I think is well under $100 I want to say I paid $70 for this book so it's a little more reasonable if you're wanting to get bone up on what the changes are okay so that is the end of our presentation I have a few comments here at the end and now be wrapping this up thank you you okay so just a few final comments before we wrap this segment up first of all I wanted to pull the point that grande fault circuit interrupter protection is now required for electric clothes dryers and dwellings and that is to 10.8 a that is again a fairly large increase in cost I think for projects secondly under - 10.8 a5r excuse me under that same segment of - 10.8 a analysis of the of this change when the 1971 NEC was published the first ground fault circuit interrupter protection requirements for dwelling units was introduced for personnel protection - 1022 D at that time called for GFCI protection for all receptacles installed outdoors this started a journey of safety for dwelling units that has led to 11 specific locations that demand GFCI protection for the most recent code cycle historically GFCI protection and dwelling units has been limited to 120 volt receptacles for the 2020 NEC GFCI protection for personnel and dwelling units will be expanding to include 250 volt receptacles that's big so going through that particular change the the summary statement I wanted to get is that this will mean that 230 volt 30 amp dryer receptacles and utility rooms will now require GFCI protection same with the 240 volt 50 amp oven or range receptacles so those are going to require it also any receptacle rated up to 250 volts applied by a single branch circuit ready 250 volts or less to ground and installed in a dwelling unit kitchen bathroom laundry area garage or any other dwelling unit location addressed in - 10.8 a 1 through a11 will now require GFCI protection for personnel so I wanted to clarify that that's out of this book and that is 2020 now for the ranges - that's a big thing now additionally jumping over to to 10.8 F GFCI protection is now required for all 250 volt receptacles and 120 boat receptacles supplied rated 150 volts to ground or less installed in outdoor locations additionally all outdoor outlets for dwelling units that are supplied by 100 single-phase branch circuits rated 250 volts to ground or less 50 amps or less will now require GFCI protection a branch circuit dedicated to a de-icing and snow melting system they get a free ride but the most dramatic effect is this new equipment will have as requirement GFCI protection for dwelling unit outdoor installed heat pumps and air conditioning units with this requirement applying to all outdoor outlets this would include outdoor hardwired AC units this new section required GFCI protection on outdoor outlets for dwellings is related to the submitted substantiation detailing a couple of facilities associated with outdoor outlet connected equipment such as an outdoor HVAC condensing unit so and again out it says outdoor outlets but they exempt the outdoor lighting outlets so you got a coach light on the back of a house not required disconnect for the AC or the AC circuit in general required outdoor outlets receptacles or any type of receptacle that is that is going to be required so and in in closing I just wanted to say that the 2020 NEC at this time is not in force in the region that this video was coming from which is Southern Indiana or Kentucky the state of Indiana has alluded to changing what code cycle they're on although they have they're having some pushback from the trades and they're having some issues moving forward with it but the state of Kentucky is is just kind of sitting on this right now I have heard that they might not adopt the 2020 they might wake till 2023 that's all scuttlebutt that's all just hearsay we don't know that but as I'd said I think it's paramount to understand these changes because when we do get to 222 three you're gonna need the information that you have from this one to get to the next level and having an understanding of if you're a contractor that travels you know you may be doing a job in another part of the country that is on the twenty twenty even if the state of Kentucky or so in Indiana is not so that being said you're going to need to be aware of those code cycles and and those those those necessary changes so it's very important to have an understanding of the code and be a studier of the code and that's something that is going to be a part of your career you know as long as you're in this trade so getting more familiar with it and then understanding what's going on now to where when we get to the next level or the next code cycle that will help you so that's all for now Mike barley here thanks for watching see ya you [Music]

Channel: Mike Bauerla

Views: 2,189

Rating: 4.9047618 out of 5

Keywords:

Id: mf0_0QQcqMc

Length: 52min 25sec (3145 seconds)

Published: Thu May 14 2020