445.13 Generator conductor 115% of name plate

[Greg1707]

445.13 Says to size conductors at 115% of name plate. There is an exception when the generator is designed to prevent overloading. The typical residential generator has a circuit breaker. Is this the exception, therefore the conductors can be sized at 100% of name plate?

 

[tank728]

Off hand, I believe that rule is stating the conductors from the generator to the first over current protection shall be sized 115%. So in your case the manufacturer has already taken care of this

 

[bwat]

How does the size of the breaker relate to the size of the nameplate?

 

[Greg1707]

How does the size of the breaker relate to the size of the nameplate?

The specifications state the 22 KW Generac generator comes with a 100 amp breaker. My question, do I size the conductors at 100 amps or 115 amps?

 

[texie]

The specifications state the 22 KW Generac generator comes with a 100 amp breaker. My question, do I size the conductors at 100 amps or 115 amps?

100 amps.

 

[ggunn]

100 amps.

Why not 90.1 amps? Next up OCPD.

 

[texie]

Why not 90.1 amps? Next up OCPD.

Well, now that you mention it, you may have a point.