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#105400 - 12/03/04 08:44 AM Modifying an Existing Panelboard Circuit Directory
Joe Tedesco Offline
Member

Registered: 10/07/00
Posts: 3325
Loc: Boston, Massachusetts USA
What will we do when there are many panelboards on one property, and in more than one building that needs circuits identified?

Can we enforce the strict rule of the existing numbering sequence, or can we change them in this one, that will be "modified" so that all of the numbers beginning with 1 through 21 will be on the left, and 22 through 42 on the right?

Safety hazard then?

I think that the conventional wisdom of the electricians in the industry would want to see and keep the same scheme.


[This message has been edited by Joe Tedesco (edited 03-20-2005).]
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Joe Tedesco, NEC Consultant

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#105401 - 12/03/04 01:37 PM Re: Modifying an Existing Panelboard Circuit Directory
sandsnow Offline
Member

Registered: 09/21/04
Posts: 163
Loc: Irvine, CA, USA
It would be nice if it was set up logically, but I won't push the issue, just suggest it.

One of my biggest peeves is panel directories from the days when I used to work as an electrician. They have to be accurate. Every breaker gets a name even if its spare. As long as breaker 7 matches what it says next to number 7 on the card, then fine.
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Larry LeVoir
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City of Irvine, CA

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#105402 - 12/03/04 05:50 PM Re: Modifying an Existing Panelboard Circuit Directory
HotLine1 Offline

Member

Registered: 04/03/02
Posts: 6804
Loc: Brick, NJ USA
Joe:
I can't seem to grasp what you are getting at...
"Can we enforce the strict rule of the existing numbering sequence, or can we change them in this one, that will be "modified" so that all of the numbers beginning with 1 through 21 will be on the left, and 22 through 42 on the right?"

Some mfg have a printed directory label/card that is 'odd-even', others 1-42 in a vertical format, some provide a blank lined card with no numbers, some provide 'stick-on' numbers, and there are probably a few other variations.

As an EC, I'mm from the 'odd-left' school, and yes, it's a routine that has taken me a while to 'break', especially after I turned off the incorrect breaker that WAS properly marked on a 'left-right' format.

As an AHJ...it must be marked, and correct.
As to logic of the format....I have no Article to cite. Perhaps UL or NEMA can address and correct this???

John
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#105403 - 12/04/04 09:22 AM Re: Modifying an Existing Panelboard Circuit Directory
timmp Offline
Junior Member

Registered: 06/01/04
Posts: 8
Loc: Leo, IN, USA
This is what I found once.


SO NICE to get good labels, even if they are alpha, and words right next to the breakers, not numbers. I found them all to be correct, too.

BTW... The mentioned 200 amp main panel is labeled in the same manner.
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#105404 - 12/04/04 12:25 PM Re: Modifying an Existing Panelboard Circuit Directory
sandsnow Offline
Member

Registered: 09/21/04
Posts: 163
Loc: Irvine, CA, USA
timmp

Now that is A1 First Class!!!
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Larry LeVoir
Inspector
City of Irvine, CA

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#105405 - 12/04/04 09:36 PM Re: Modifying an Existing Panelboard Circuit Directory
SvenNYC Offline
Member

Registered: 08/19/02
Posts: 1685
Loc: New York City
I love how the breaker on the bottom left corner is labelled:

"THIS OUTLET" with the arrow pointing down.

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#105406 - 12/05/04 04:51 AM Re: Modifying an Existing Panelboard Circuit Directory
timmp Offline
Junior Member

Registered: 06/01/04
Posts: 8
Loc: Leo, IN, USA
...And there it was, a nice commercial grade Leviton 20 amp outlet right under the panel. OH ... and inside was all nice organized separation of ground wires and isolation of neutral bar. Something that gets messed up a lot around here. Only thing I didn't like was that thry ran Aluminum from main panel, but it was dressed out properly.
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#105407 - 12/12/04 05:18 AM Re: Modifying an Existing Panelboard Circuit Directory
PCBelarge Offline
Member

Registered: 06/08/03
Posts: 657
Loc: Dobbs Ferry, NY, USA
The NEC requires the panels to be labeled. It does not say with numbers, letters or in sequence. This panel is better than 90 percent that I see.
Look at the screw holding in the main.

Pierre
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Pierre Belarge

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#105408 - 12/18/04 08:11 PM Re: Modifying an Existing Panelboard Circuit Directory
lil suzi Offline
Member

Registered: 08/13/03
Posts: 56
Loc: Midwest
Hey, why is there a screw holding the main?
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#105409 - 12/19/04 07:42 AM Re: Modifying an Existing Panelboard Circuit Directory
trekkie76 Offline
Member

Registered: 06/19/04
Posts: 219
Loc: baileyville, maine, usa
408-16(F) requires an additional fastener to hold in mains that are backfed

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