3 conductors for 2 - 240 outlets?

[iwire]

This post has got me to wondering if I am mistaken, any help would be appreciated


Is this wiring safe?

 

[roger]

Re: 3 conductors for 2 - 240 outlets?

Bob, this doesn't meet the definition of multiwire branch circuit so articles refering to such would not apply.

With this said, across the loads conductors 1&3 would be in parallel, therefore would have to meet applicable articles. (a stretch here)

Tell him that he will have to use a minimum of 1/0 for this circuit.

I agree with you that 110.3 would come to play here. We can all make things work and find loop holes.

Roger

[ March 15, 2003, 05:31 PM: Message edited by: roger ]

 

[iwire]

Re: 3 conductors for 2 - 240 outlets?

Roger, thanks for the reply.

I showed 240.20(B) I think that is for all circuits.

240.20.20(B)(1) is an exception for multiwire circuits.

 

[roger]

Re: 3 conductors for 2 - 240 outlets?

Bob, your interpretation of article 240.20(B) and 240.20(B)(1) is the way I see it too. I see no way he can argue that this is two different circuits.

With conductor 2 being an ungrounded conductor common to 1&3, the two breakers on A leg would be violating
240.8

Roger

[ March 15, 2003, 07:15 PM: Message edited by: roger ]

 

[bphgravity]

Re: 3 conductors for 2 - 240 outlets?

Thanks Roger, I see my error!

[ March 16, 2003, 09:22 AM: Message edited by: bphgravity ]