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The point about 120VAC is from a hazard and code standpoint. Enphase inverters always operate at 120V from ground. Yes, they are out of phase so they produce 240VAC, but they still only present a 120V hazard. My solar system is two circuits of 9 panels and Enphase inverters on each circuit. Simple Romex cable goes through the attic and walls to individual double pole 20A breakers. I have no exposed conduits on the outside of my house because it was pre-wired during construction. This is a much simpler and cleaner install than high voltage DC in metal conduit all the way down to string inverters.Winter shading was the primary reason I chose the Enphase inverters though.Also, most solar products do not include labor reimbursement for warranty replacement. That labor warranty coverage should be provided by your solar installer. SMA also does not cover labor, and their warranty is only 10 years. Enphase warranty is 25 years on newer products.
The point about 120VAC is from a hazard and code standpoint. Enphase inverters always operate at 120V from ground. Yes, they are out of phase so they produce 240VAC, but they still only present a 120V hazard. My solar system is two circuits of 9 panels and Enphase inverters on each circuit. Simple Romex cable goes through the attic and walls to individual double pole 20A breakers. I have no exposed conduits on the outside of my house because it was pre-wired during construction. This is a much simpler and cleaner install than high voltage DC in metal conduit all the way down to string inverters.
Winter shading was the primary reason I chose the Enphase inverters though.
Also, most solar products do not include labor reimbursement for warranty replacement. That labor warranty coverage should be provided by your solar installer. SMA also does not cover labor, and their warranty is only 10 years. Enphase warranty is 25 years on newer products.
