120/240 high leg

[JHughes]

I have been searching in the code for the answer to this question. In a high leg panel can you install 120V loads. we have been running into the problem of the city will not allow a grounded conductor in a panel containing a high leg.:huh:

 

[infinity]

You can install a 3?, 4W system as long as you identify the high leg according to 110.15.
Welcome to the Forum.

 

[acrwc10]

If you don't have a grouned conductor in the panel, you basically have no "high leg" because phase to phase you will only have 240 volt. I just love inspectors saying "you can't do this or that" with no basis in the code to make such calls, he was a combo inspector wasn't he. :slaphead:

 

[JHughes]

You can install a 3?, 4W system as long as you identify the high leg according to 110.15.
Welcome to the Forum.

That's what we knew, and that is all we have found is that you must identify the high leg, it must be just a city ordinance. Thanks for letting me bounce that off you.

 

[JHughes]

If you don't have a grouned conductor in the panel, you basically have no "high leg" because phase to phase you will only have 240 volt. I just love inspectors saying "you can't do this or that" with no basis in the code to make such calls, he was a combo inspector wasn't he. :slaphead:

No he is an"Electrical" inspector!!:lol:

 

[roger]

Might it be a local rule that requires a separate single phase panel for all the single phase connections in addition to a three phase panel. I may be wrong but, I believe I have heard there are some areas where this is actually a formal rule.

Roger

 

[kwired]

At some point that single phase panel had to originate from a switch, panelboard, feeder tap, service conductors, etc that also contained the high leg. This inspector and/or whoever decided that this is the rule needs edgimucated.

As has been said - take the grounded conductor out of the panel and there is no reason to even identify the high leg, still may need to differentiate A,B, and C, but there is no reason to even care which one is the high leg.

 

[JHughes]

Might it be a local rule that requires a separate single phase panel for all the single phase connections in addition to a three phase panel. I may be wrong but, I believe I have heard there are some areas where this is actually a formal rule.

Roger

That is the case we are dealing with, and I couldn't find any base in the code.

 

[acrwc10]

Roll up the NEC like a news paper and swat the inspector on the nose.

 

[JHughes]

At some point that single phase panel had to originate from a switch, panelboard, feeder tap, service conductors, etc that also contained the high leg. This inspector and/or whoever decided that this is the rule needs edgimucated.

As has been said - take the grounded conductor out of the panel and there is no reason to even identify the high leg, still may need to differentiate A,B, and C, but there is no reason to even care which one is the high leg.

That is the same thought I had when this issue was brought up, I know I must have looked at him like he had three heads!!

 

[kwired]

The whole point of grounding the mid point of one phase is so there is 120 volts available, otherwise one may as well just corner ground the system:slaphead: