Once the base poles have been placed in concrete, wait at least a week to allow it to fully dry and set. Always use correct wire gauge size to minimize voltage drop along required distances within any given circuitry. If you’re uncomfortable handling the inverter or have a grid-tied system, we recommend consulting with a certified electrician. This site receives compensation from the companies featured in this listing, which may impact where and how products appear. This listing doesn’t feature all companies, products, or offers that may be available. Embark on your solar journey today with guidance from Solar Resource – your trusted partner in solar power world.