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).]

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.

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

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.

timmp

Now that is A1 First Class!!!

I love how the breaker on the bottom left corner is labelled:

"THIS OUTLET" with the arrow pointing down.

...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.

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

Hey, why is there a screw holding the main?

408-16(F) requires an additional fastener to hold in mains that are backfed

But why is the screw exposed on the face of the breaker? On my SqD Homeline, the hold-down kit resides under the deadfront. Is this something unique to Bryant, or did (GASP) someone drill a hole through the breaker to set the screw?

Looking at the second pic....I almost always ID panels in this way- though, if there is room, I am likely to place the lable on the breaker itself. It's simply a better way, I believe. The breaker is identified even if the cover is removed, and the lable moves if you move the breaker. That $30 printer has come in very handy.

Now for the bad news....the local inspectors believe that you MUST use the provided "directory." So, I get to fill that out as well. Go figure.

That is Bryant's hold-down,nobody drilled a hole in the circuit breaker.

LOL,
You'd have to be pretty keen {or stupid} to try a trick like that!.