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#85690 - 07/29/03 03:28 AM Upside down panel?
Brian Roberts Offline
Junior Member

Registered: 07/11/03
Posts: 5
I just saw a new house with the circuit breaker panel mounted upside down. The main breaker was on the bottom. Is this allowed?
I was always taught that the line side should be on the top.

2014 / 2011 NEC & Related Books and Study Guides
#85691 - 07/29/03 03:48 AM Re: Upside down panel?
pauluk Offline

Registered: 08/11/01
Posts: 7693
Loc: Norfolk, England
I'm not sure about the line-on-top issue, but if the main breaker handle operates vertically, then the upside down mounting would violate 240.81.

#85692 - 07/29/03 06:29 AM Re: Upside down panel?
Tom Offline

Registered: 01/01/01
Posts: 1069
Loc: Shinnston, WV USA
Mounting these things upside down is done all the time, generally to keep from running the service entrance conductors from the bottom of the panel to the top. As Paul pointed out, as long as the service disconnect is not upside down, no problem.

You need to forget about line being on top and load being on the bottom, this could be a dangerous assumption For example, a 200 amp breaker with lugs on both ends could have the power coming in the bottom. This would be allowed as long as there are no Line and Load markings on the breaker or the enclosure. You turn off the breaker & assume the lower lugs are de-energized & you could become a statistic.

Besides which, when you order what many of us consider a real panelboard, not the cheap load centers we usually deal with, you specify if you want top feed or bottom feed.


[This message has been edited by Tom (edited 07-29-2003).]
Few things are harder to put up with than the annoyance of a good example.

#85693 - 07/29/03 06:49 AM Re: Upside down panel?
Brian Roberts Offline
Junior Member

Registered: 07/11/03
Posts: 5
Thanks for clearing that up! The breaker operates sideways. I still don't like to see the embossed breaker numbers with #1 at the bottom and #40 at the top. Maybe I'll just have to get used to it. Thanks again.

#85694 - 07/29/03 06:57 AM Re: Upside down panel?
GEO Offline

Registered: 03/12/03
Posts: 50
Loc: Lancaster,Pa
2002 240.33 240.81


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