ECN Forum Forums Code Related Discussion NEC & other Code issues 445.18 Disconnect at Generator location & type

I cant find anything about the 50 foot rule you mentioned for HV generators?

Is it in there?

thanks,

Windmiller

I am still not sure how you get past 445.12

Greg,
I am interested to know which part of 455.12?

I have 3 13.8 generators onsite and they come from the load side of the generator breaker control to a buss way over 50 feet away. No protection except at the gen brkr.

Thanks

Windmiller

I think somehow they are trying to tie in 700.12(B)(6) to this application. I'm not sure it applies because the voltage isn't specified and the graphic in the code analysis from IAEI for the '02 code kinda would make one think it would be correct. What do you think Upper?

I feel 240.21 protecting conductors at the source applys unless one of the exeptions is met.Wheither its under 600volts or Medium Voltage .

I can't agree with you Yooper, because of what it says in the scope of 240. It is clear that your code reference in Part II only applies to less than 600v. and since the question deals with over 600v.- then Part IX applies and there is nothing in Part IX that would prevent a remote disconnect as long as the overcurrent was properly sized. The EAB was wrong.

George
Correction Article 240.100 Still requires Protection Via Overcurrent relays or CT"s ,Fuses ,or some type of protective device. So they would have to protect generator conductors that go from generator to switchgear.240.100 A-B-C. alternate location in the circuit.But still In the circuit.Key word is IN.

Ernie- I agree with you on the need for protection as called out in Part IX but my point was that 240.21 does not apply. When this issue came up I couldn't hear what some of the finer details were as I was seated near the rear of the room and the acoustics suck in that room plus some of the speaker didn't have very strong voices. I'm somewhat hearing challenged also so that don't help. It wasn't until I read it here that I realized that we are talking over 600v. Keep up the good work on that Board they need a strong code guy such as yourself. See Ya in December.

I was wrong when I quoted 240.21 Before George. you keep me on my toes! and at my age that ain't easy. you get my message about 2008 code book?

Yep- I responded (I think) It's in the works.