Generator install question.

[jxofaltrds]

You would fail

Only if you ignor the Exception.

You are thinking of when we were prohibited from running 3 wire at all from any panel

We were never allowed to run 3 wire from sub panels.

I was right it was 1996. What is Exhibit 250.54 saying. Sure looks like it permits this.

 

[iwire]

Mike, I know the exception.

Looking at my 1990 NEC, at that time the section for ranges and dryers was 250-60


From 250-60(c)

'the branch circuit originates at the service equipment'

If the branch circuit originates anywhere but the service equipment it must be four wire and I think that rule goes way way back.

In the 1996 the section is also 250-60(c)

 

[jxofaltrds]

Mike, I know the exception.

Looking at my 1990 NEC, at that time the section for ranges and dryers was 250-60


From 250-60(c)


If the branch circuit originates anywhere but the service equipment it must be four wire and I think that rule goes way way back.

In the 1996 the section is also 250-60(c)

I agree. But what is making this hard is:

250.140 Exception.
Exhibit 250.54.
250.142(B) Exception 1.

 

[jumper]

I agree. But what is making this hard is:

250.140 Exception.
Exhibit 250.54.
250.142(B) Exception 1.

Mike, go back and look at the exhibit again. It is EX.250.51 in my 2005HB.

It says not "Type SE....... not permitted"

 

[jxofaltrds]

Mike, go back and look at the exhibit again. It is EX.250.51 in my 2005HB.

It says not "Type SE....... not permitted"

Thank you. My eyes went right over the word NOT.
I was wondering why it was OK one place and NOT the other. Now I know. I can not read.

 

[tryinghard]

250.140.

It is arguable that an insulated neutral obviates the requirement.

Word of the day [or two day's ago]