Ground Wire For Solar Panels

Regardless of system voltage equipment grounding is required on all pv systems.

Ground wire for solar panels.

Some standard ground mounted solar panel systems can be manually adjusted a few times a year to account for seasonal shifts of the sun. If lightning were to strike the solar panels outside the electric current may go into the panel grounding system if you are lucky or it may travel along the positive and negative wires going back to the inverter inside your house. If your photovoltaic array is some distance from the house drive ground rod s near it and bury bare wire in the trench with the power lines. There are two basic types of ground mounted solar panel systems.

Solar sizing calculator allows you to calculate your energy consumption and requirements to help you decide on your solar panel requirements. Appropriate bonding and equipment grounding limits the voltage imposed on a system by lightning line surges and unintentional contact with higher voltage lines. Once there it could arc again to the house wiring and use its grounding system instead. The formula p e i says that the wattage power p is equal to the voltage e times the current i in a circuit.

If you use conduit run the ground wire outside the conduit. The main issue is the wire size needed for the usually fairly long run to the solar panels. For burial runs use bare copper wire. The additional earth contact will improve the grounding of the system.

Use twisted pair cable for any communication or control cables for example a float switch cable for full tank shutoff of a solar water pump. Simply stated the higher the voltage the smaller the wire size that is needed to carry the current. Connect or bond all ground rods together via bare copper wire 6 or larger see the nec and bury the wire. For outdoor grounding you need to use thick bare copper wire that can handle large electrical currents like lightening.

Use only approved clamps to connect wire to rods. Besides this solar cable gauge calculator is designed to provide estimates for wire gauge size to determine your need for cables. The one strand conductor type wire is most commonly used in domestic wiring and should be okay for your solar system however if your area is prone to consistent and extremely high winds you may want to consider wire types with a multi stranded conductor as it is more flexible thus more durable. Drive a grounding rod at least 8 feet deep into the earth near the system.