Generator

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cowboyjwc

Moderator
Staff member
Location
Simi Valley, CA
Would you allow a #2 SO cord to feed an exterior generator? It's not portable and don't worry about loads. This is an optional standby system.

Thanks
 

petersonra

Senior Member
Location
Northern illinois
Occupation
engineer
I see nothing inherently unsafe about doing so.

Did the AHJ accept the idea that the reason for doing so was to prevent transmission of vibration, which is a pretty good argument in the case of a generator.
 

cowboyjwc

Moderator
Staff member
Location
Simi Valley, CA
Assuming hard wired here, no- but you already know this.

What's up?

Of course if it was my own house, uninspected, and just me running the show......:D

That's what I was assuming too, but I'm not sure that I'm hanging my hat on the correct code section.

Just a plan check, with some misinformation on it and so once the red pen comes out......

Well of course.:happyyes:
 

A/A Fuel GTX

Senior Member
Location
WI & AZ
Occupation
Electrician
Could 400.8 (7) be applied here? I also wonder how the SO would hold up being exposed to direct sunlight.
 

qcroanoke

Sometimes I don't know if I'm the boxer or the bag
Location
Roanoke, VA.
Occupation
Engineering
Would you allow a #2 SO cord to feed an exterior generator? It's not portable and don't worry about loads. This is an optional standby system.

Thanks

If it is not a portable generator and it is hard wired, no. Flexible cord cannot be used as a substitute for fixed wiring of a structure.
If the generator were on wheels and it was cord and plug connected. I would have to assume it would only be connected during an outage. Yes.
 

A/A Fuel GTX

Senior Member
Location
WI & AZ
Occupation
Electrician
I would prefer 400.8(1), I am not fond of sections that say "Where subject to physical damage", too subjective IMO.

Since the Genny is outside, I doubt the fixed wiring of a structure would fly as an arguement. I'd have used LFNMC or Sealtite if It was me rather than SO.
 

cowboyjwc

Moderator
Staff member
Location
Simi Valley, CA
  • If it is not a portable generator and it is hard wired, no. Flexible cord cannot be used as a substitute for fixed wiring of a structure.
If the generator were on wheels and it was cord and plug connected. I would have to assume it would only be connected during an outage. Yes.

I agree with you 100% on that.

Tom, that was the same reason I'm having problems justifying it in my head. But the sunlight thing is another good reason that it should be hard wired.
 

hillbilly1

Senior Member
Location
Atlanta,Ga
Occupation
Field coordinator/ technical support


  • I agree with you 100% on that.

    Tom, that was the same reason I'm having problems justifying it in my head. But the sunlight thing is another good reason that it should be hard wired.


  • I agree too, I done a restaurant re-wire that had been originally owned and wired by another electrical contractor, he had used SO cord to feed the compressor panel outside (nice plywood roof on a nema 1 enclosure:roll:), the outer rubber was brittle and peeling from several years of sunlight.
 
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