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Outside generator disconnecting means

H

hhsting

Senior Member
Location
Glen bunie, md, us
Occupation
Junior plan reviewer
I have emergency generator outside housed in a mini building Not the generator enclosure that has three main breakers. First feeds life and safety, second feeds legally required and third feeds fire pump.

The generator serves as back up to the fire pump.

The problem is those three main breakers are not within sight of building since they are in mini building with door

NEC 2017 Article 700.12(B)(6) says to have disconnect within sight of the building.
However should the third breaker that is feeding fire pump is allowed to have additional disconnect between generator main breaker and fire pump or not?
 
B

Birken Vogt

Senior Member
Location
Grass Valley, Ca
We usually use the provision in 445.18 that allows the prime mover shutdown switch to serve as the disconnect. That way you can run a low voltage switch loop to any number of big red buttons anywhere they need to be and shut down everything.
 
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