Engineer#4827502
Member
- Location
- California
Hello All,
First post, but I've been lurking for a while. I have a question about NEC 690.8(A)(3). The 'inverter continuous output rating' is typically listed in the specs/cutsheet as a max AC output current. Typically this is under a low voltage condition, high PV overload, and possibly non-unity power factor. Every inverter manufacturer I've talked to has said that this rating can be continuous however rare the conditions may be.
My question is, this maximum value is what should be used for conductor/equipment sizing, correct? Not the nominal AC output current (which is typically what you would calculate at rated output power at nominal voltage).
I've seen both interpretations by engineers, electricians, and AHJs so there may be a range of opinions on this one.... Thanks for reading!
First post, but I've been lurking for a while. I have a question about NEC 690.8(A)(3). The 'inverter continuous output rating' is typically listed in the specs/cutsheet as a max AC output current. Typically this is under a low voltage condition, high PV overload, and possibly non-unity power factor. Every inverter manufacturer I've talked to has said that this rating can be continuous however rare the conditions may be.
My question is, this maximum value is what should be used for conductor/equipment sizing, correct? Not the nominal AC output current (which is typically what you would calculate at rated output power at nominal voltage).
I've seen both interpretations by engineers, electricians, and AHJs so there may be a range of opinions on this one.... Thanks for reading!