Mastering Off-Grid Solar Panel Wiring: Essential Tips and Techniques for DIY Solar Power Enthusiasts

hello welcome back to our channel in today's video we will be discussing everything you need to know about wiring solar panels we have a complete wiring diagram and a few practical key points prepared to share with you as you may know this is part two of our off-grid solar wiring video series if you haven't seen part one yet we highly recommend checking it out before following this video it will give you a clear idea of the diagram we're working with before we start following the solar panel wiring diagram it is essential to share this message with all of you usually solar panels are mounted on rooftops or higher places therefore it is important to take maximum safety precautions furthermore once you connect the solar panels together to Total DC voltage Rises to round for 150 to 500 volts in a 5000 to 5500 watts inverter setups this is a high risk process so please be aware of what you are doing if you have any doubts it's recommended to seek professional support for the solar panel installation before it is too late in today's video we will be discussing this solar panel wiring diagram let's get started it may seem simple but I encourage you to stay till the end of the video we will explain each component and provide some great tips that you'll find helpful wiring the grid connection battery in and inverter out was explained in the previous video most inverters on the market today don't require a parallel solar panel connection however you may come across inverters with more than one PV input which we will talk about soon let's assume that these panels are 550 watts each makes the open circuit voltage 49.9 volts for each panel so the total system will have 5500 watts power width for 199 volts in DC with the inverter supporting up to 6000 watts of solar power these panels could be a great match for it it allows for optimal utilization of the inverter's capacity making it a perfect combination for an efficient solar setup since we have selected the right solar panel for the inverter let's wire it up the series connection of the wiring starts with one end of the solar panel let's begin with the negative wire leave the first negative wire for the inverter then connect the positive wire of the same panel with the negative wire of the next panel check the diagram for the plus and minus marks follow the connections accordingly until you reach the other end as we started by leaving the negative wire for the inverter Connection in the other end the positive wire should be free for the inverter connection double check the connections and ensure they match the wiring diagram accurately attention here's a safety tip as mentioned earlier the PV voltage of the panel Ray can reach 500 volts hence we must take extra care to avoid any accidental contact between the negative and positive ends of the PV array to avoid this risk we can follow a simple tip keep the PV array wiring Loop disconnected from one place by doing so even if you accidentally touch both wires there's no risk of getting an electrical shock it's a smart safety measure that can help to protect you during the wiring process usually the solar panels come with MC for connectors therefore next step is to connect DMC for fuse why use the mc4 fuse consider purchasing this product to add an extra layer of protection to your solar system diffuse holder is designed to offer complete single circuit protection for your solar power array diffusers play a crucial role in preventing damage to the solar panels caused by large currents next we need to do the wiring up to the slow bloaty C fuse holders for the wiring you need to use photovoltaic wires also known as PV wires because usually these wire had xlp cross-link polyethylene insulation a thermostat zero halogen insulation that also provides flame retardants this wiring can be used for the entire life of a solar panel which can last 25 to 30 years now it's time to wire the Slow blow fuse connectors here's a closer view of the Slow blow fuse holder and the fuse you can select the right fuse for your system the Brand's displayed are but popular in the market however if you can find a better quality product in your local market please feel free to use it from the Slow blow fuse we need to feed the wires into the SPD since it has L plus and L minus marked we need to make sure the right wire goes into the right place before we go further it's better to clear out the doubts what is a Slow blow fuse and why install a Slow blow fuse in series with the SPD this is a common question for most of us so let's talk about it I think my friend has a better explanation so let's hear it from him thanks and hi guys first we will talk about the difference between a Slow blow fuse and a fast blow fuse if you ask is it possible to replace a faulty Slow blow fuse with a fast acting fuse or vice versa the answer is no these two fuses have different properties and applications while both fuses serve the purpose of disconnecting this circuit during over current or short circuit situations they achieve this using different methods a Slow blow fuse disconnects the circuit only when the over current situation persists in the supply line it is not an instantaneous action on the other hand a fast acting fuse immediately disconnects the circuit as soon as over current is detected for the fast acting fuse it is an instant job next we will discuss why does the surge protection device have a fuse in series surge protection devices limit transient over voltages and divert surge currents in low voltage power distribution and information systems protecting against lightning over voltages operational over voltages lightning electromagnetic pulses and electromagnetic interference pulses if the surge current exceeds the spd's maximum capacity it can fail and cause a short circuit fault to prevent this install a circuit breaker or fuse lightning strikes cause aging of the SPD especially if the current persists for long periods leading to overheating the thermal protection system of the circuit breaker or fuse should disconnect the SPD before it reaches its maximum heat tolerance furthermore in cases requiring high voltage protection you may need to install lightning arrestors hope my explanation was clear on fuse types and using spds with fuse in series thanks for the informative explanation so back to the off-grid solar wiring diagram moving forward next we have the two pole DC MCB you can also use ADC isolator instead of the NCB what is better dcmcb versus DC isolator mcbs are better for protection as they are current limiting devices some rumors say using mcbs might increase fire risk to chose is yours but if you choose MCB over an isolator better use one that supports more current than required so it will reduce the heating note for using more than two strings in parallel it's recommended to use current limiting devices mcbs in some countries isolators are required on rooftops not sure if it applies to off-grid but if so use waterproof enclosures in the previous video we used a non-polarized DC MCB for Batteries but for PV you can use a polarized MCB MCB is numbered one two three and four use one and three for the loaded input now we are ready to connect the PD input to the inverter before doing so make sure the inverter is powered off and the grid input is turned off as well also double check the connections to ensure that the plus wire goes to the plus connection of the inverter and the minus wire goes to the minus connection once the PV input is connected next connect the ground wires it is better to use a direct wire for the solar panel grounding and connect the other ground wires using Earth bar since many of us have different views on grounding strategies we will have a separate video dedicated to grounding methods in the future in that video we will share our recommended grounding method and you can also share your thoughts on the best grounding approach let's plan to do this soon finally connect the MC for connector that we kept unplugged for safety reasons now that your solar panel wiring is complete your system is ready for operation but wait it's not the end of the video as promised we have some valuable tips for solar panel mounting solar panel mounting tips the angle of your solar panel plays a crucial role in maximizing its efficiency on clear days align the panel directly towards the Sun for maximum power if it's cloudy tilt it straight up for optimal energy yield throughout the year a fixed angle within azimu facing the equator and to tilt angle approximately 10 degrees below the latitude is generally recommended however this may vary depending on local climate conditions including sunlight levels during the summer and the presence of a monsoon climate take these factors into account when deciding the best angle for your solar panels common roof slopes range from 22.5 to 15 degrees but even 10 degrees sufficient to prevent water from pooling on the solar panel glass or frame Edge tunnels mounted below 10 degrees may not stay as clean with only rain water using double glass panels without frames can help but they are an expensive option and typically require yearly maintenance to check the tension on the clamps holding them in place here's a video that demonstrates how solar panels can collect dirt and water when the angle is not properly adjusted it highlights the importance of setting the right angle to ensure Optimal Performance and prevent debris buildup my friend is adding some water to demonstrate the Practical situation showing how water can accumulate on solar panels and the angle is not set correctly as shown in this demonstration video when the solar panel angle is set correctly the water will flow smoothly without getting stacked please note that this video clip was only used for demonstration purposes and we apologize for any inconvenience caused by the camera angle hope the clip was helpful in understanding the solar panel installation angle next we will talk about mounting and grounding solar panels we won't discuss the basics of mounting solar panels since there are plenty of videos covering that instead we'll explore cool mounting accessories that enhance the installation optimize functionality and provide long-term protection giving your setup a professional look use solar cable clips instead of standard cable ties for rooftop cable Arrangements they provide more durability and can securely hold up to two wires earlier we use jumper wires to ground the solar panel array now you get a earth plate grounding clip these connectors and clips are used to organize the Earth wire or the Earth Rod we believe that we have almost covered everything and we have reached to the end of this video and here's a quick overview in this video we have covered how to wire solar panels in a off-grid solar system importance of different types of fuses importance of Slow blow fuse in series with SPD safety tips solar panel mounting angle mount solar panels like a pro if you found this video informative and valuable please consider liking and subscribing to our Channel thank you for watching and we look forward to sharing more DIY videos in the future stay tuned

Channel: DIYDESK

Views: 10,592

Keywords: solar inverter connection diagram, solar panel wiring, house wiring diagram, solar inverter, inverter connection, solar panel inverter wiring diagram, solar system, off-grid solar system, solar battery, connect solar inverter to house, DIY solar inverter system, solar system inverter connection, solar system setup off-grid, diy solar, off grid, solar power, off grid solar, diy solar system, battery backup, off grid living, powmr, On-Grid Solar Panel Wriring

Id: ceLN5A64C9I

Length: 13min 47sec (827 seconds)

Published: Sat Jul 29 2023