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Modifying an Existing Panelboard Circuit Directory #105400 12/03/04 11:44 AM
Joined: Oct 2000
Posts: 2,749
Joe Tedesco Offline OP
Member
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).]


Joe Tedesco, NEC Consultant
2017 / 2014 NEC & Related Books and Study Guides
Re: Modifying an Existing Panelboard Circuit Directory #105401 12/03/04 04:37 PM
Joined: Sep 2004
Posts: 167
S
sandsnow Offline
Member
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.


Larry LeVoir
Inspector
City of Irvine, CA
Re: Modifying an Existing Panelboard Circuit Directory #105402 12/03/04 08:50 PM
Joined: Apr 2002
Posts: 7,218
HotLine1 Offline
Member
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


John
Re: Modifying an Existing Panelboard Circuit Directory #105403 12/04/04 12:22 PM
Joined: Jun 2004
Posts: 14
T
timmp Offline
Junior Member
This is what I found once.
[Linked Image from 4.33.146.181]

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.


Timm
Re: Modifying an Existing Panelboard Circuit Directory #105404 12/04/04 03:25 PM
Joined: Sep 2004
Posts: 167
S
sandsnow Offline
Member
timmp

Now that is A1 First Class!!!


Larry LeVoir
Inspector
City of Irvine, CA
Re: Modifying an Existing Panelboard Circuit Directory #105405 12/05/04 12:36 AM
Joined: Aug 2002
Posts: 1,691
S
SvenNYC Offline
Member
I love how the breaker on the bottom left corner is labelled:

"THIS OUTLET" with the arrow pointing down. [Linked Image]

Re: Modifying an Existing Panelboard Circuit Directory #105406 12/05/04 07:51 AM
Joined: Jun 2004
Posts: 14
T
timmp Offline
Junior Member
...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.


Timm
Re: Modifying an Existing Panelboard Circuit Directory #105407 12/12/04 08:18 AM
Joined: Jun 2003
Posts: 681
P
PCBelarge Offline
Member
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


Pierre Belarge
Re: Modifying an Existing Panelboard Circuit Directory #105408 12/18/04 11:11 PM
Joined: Aug 2003
Posts: 57
lil suzi Offline
Member
Hey, why is there a screw holding the main?


"Live the dream, you only get one chance."
Re: Modifying an Existing Panelboard Circuit Directory #105409 12/19/04 10:42 AM
Joined: Jun 2004
Posts: 220
T
trekkie76 Offline
Member
408-16(F) requires an additional fastener to hold in mains that are backfed

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