ECN Forum Forums General Topics of the Trade General Discussion Area Non-CTL panel

required and desired are 2 different animals.
the customer is king....

Yes Sparky they are required to be marked as such.



The information above clearly states that fact.


[This message has been edited by Joe Tedesco (edited 12-29-2001).]

Joe,
The panel in question has no label on it indicating CTL class. There is a busbar diagram depicting full size breakers only. I have seen these diagrams also depicting minis on the bottom few stabs. The question this brings up is, if there is no CTL rating, are minis allowed and how many?

Redsy:

My take would be "NO" because the instructions you describe are specific and 110-3(b) can be cited here.

Joe & everyone,

Thanks & Happy New Year

Sorry Rojosy.
I crapped out big time on this one.
Happy New Year...S

electure,
No need to be sorry here. I appreciate all the input I get.

This might be too little, too late, but I perused my 1999 UL Electrical Construction Equipment Directory and found a statement that might pertain to your query. On page 27 it states that: "Some breakers are not provided with a means to prevent their installation in Class CTL assemblies. These circuit breakers are for use in old style, non-Class CTL equipment and are marked 'For Replacement Use Only, not CTL Assemblies.'"
So, it might be ok to have the mini breakers if they are so marked. But,if the wafer breakers are modified in order to fit the panel bus bars, then they were illegal from the get-go and you are not permitted to add more breakers to the non-code compliant panel.
Instead of a 200 A service change, it might be feasible to do a panel change to allow more breakers..

Elzappr,
I noticed the breakers you mentioned at the local sell-all supply house. In this case, the issue at hand would still be that installing these minis would allow more than 42 OC devices in this panel.
Interestiingly enough, I found another one last night. A 40 space ITE panel that had about 12 minis installed. Total count= 46 OC devices. These "cheater" breakers do not have the rejection feature that most minis have.

this might sound a tad lame, but if it's a 40 cir panel, shouldn't it automatically be a CTL ?