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Mixing of equipment on a panelboard? #202897 09/01/11 10:51 AM
Joined: Oct 2000
Posts: 2,749
Joe Tedesco Offline OP
Member
Comments? dunno

[Linked Image from nachi.org]


Joe Tedesco, NEC Consultant
2017 / 2014 NEC & Related Books and Study Guides
Re: Mixing of equipment on a panelboard? [Re: Joe Tedesco] #202898 09/01/11 11:13 AM
Joined: Jul 2005
Posts: 183
J
jay8 Offline
Member
I would be most concerned with the three poles tied together on the bottom left on what appears to be a single phase panel. One of those breakers is a GFCI.

As for mixing of equipment, it is getting harder to avoid now that single entities own all these sub brands such as Schneider, Eaton etc.

Re: Mixing of equipment on a panelboard? [Re: jay8] #202901 09/01/11 11:59 AM
Joined: Mar 2011
Posts: 98
V
Vindiceptor Offline
Member

Nice handle-tie!

I was not aware anyone had a listed 3 or 4 pole handle-tie yet!

Obviously necessity is the mother of all invention......

I have a local plan checker here that insists the intent of 210.4(B) is that a fault in one circuit will trip all circuits within the multiwire circuit. Reasoning does no good with him.

Re: Mixing of equipment on a panelboard? [Re: Vindiceptor] #202902 09/01/11 12:01 PM
Joined: Mar 2011
Posts: 98
V
Vindiceptor Offline
Member

Question:

Is this sort of handle-tie acceptable anywhere?

Re: Mixing of equipment on a panelboard? [Re: Joe Tedesco] #202903 09/01/11 12:03 PM
Joined: Jan 2005
Posts: 5,316
renosteinke Offline
Cat Servant
Member
I'm not overly concerned ... regardless of the 'fine print' regarding 'listing,' 'classified,' etc.

Good heavens, some clowns are carrying it to the extreme of saying you can't put a classified breaker in an obsolete panel, because, they argue, there is no way the breaker maker could have provided UL with a smaple of that exact panel for evaluation.

Ditto for the various mergers, etc. Again, some folks will say you can't put a Brand X breaker in a panel made by Brad Y, even though the two were once the same firm. You need a scorecard to keep them straight.

Personally, I consider the desires of certain manufacturers to prevent standardising parts to be simply ignorant. "Legal logic" aside, look at every successful product, and you see that it has both opened itself to others, as well as defeated technically better, but proprietary, competitors. VHS/Betamax, Windows/Apple, and Zerk/Alemite are all such examples.

I'd rather see a genuine C-H breaker in a Square-D panel than a counterfeit.

Finally, there are plenty of perfectly legal panels out there that were not made by the guy who made the breakers. A certain -was it Thomas & Betts?' panel comes to mind, as well as the fine panels made by American Switchboard.

What we really need is a way to test breakers for proper operation. Only then could we tell if things are operating properly. If they can invent 'arc detetors,' then a simple overcurrent test ought not be that difficult!

Re: Mixing of equipment on a panelboard? [Re: Joe Tedesco] #202917 09/01/11 07:34 PM
Joined: Feb 2002
Posts: 2,233
H
harold endean Offline
Member
Joe,

Why would you want to trip that "Twin" 15 amp? Do they think it will give them 240 volts? Plus why would they want to trip a GFI breaker with another breaker. Also it goes without saying that the "tie handle" is not an approved listed method.
I also agree with the rest, it is getting tough to figure out if the CH breaker is a "BR" breaker and if it can go into a CH panel, a GE panel, Murray panel, ITE panel, etc.

ITE was making breakers to go into Sqaure D panels. What is this world coming to? smile

Re: Mixing of equipment on a panelboard? [Re: Joe Tedesco] #202919 09/01/11 08:02 PM
Joined: Apr 2002
Posts: 7,233
HotLine1 Offline
Member
For as long as I remember there is/was a philosophy that 'if it fits, it works'! GE/Murry,Bryant,etc, etc. Some even went to the extreeme of removing the rejection tab on twins to get them in. Heck, I saw a 42 circuit panel with 42 twins installed, and no cover due to the excessive # of conductors. (That was "only a temp, sir")

Bottom line, one added circuit in an existing panel, brand 'x' breaker, might get by. However, do a service upgrade, or a new install....all must be of same mfg.


John
Re: Mixing of equipment on a panelboard? [Re: Joe Tedesco] #202926 09/01/11 10:08 PM
Joined: Feb 2002
Posts: 2,233
H
harold endean Offline
Member
John,


As you and I know, we know how to get past the manufactures rejection tabs. Which also helps me in my inspections. How many CH twin breakers do you see in a CH panel that doesn't allow it? I also count breakers when I see an ITE panel that says 20/20 MB and as I look in the panel and see 24 breakers.

Re: Mixing of equipment on a panelboard? [Re: Joe Tedesco] #202927 09/01/11 10:09 PM
Joined: Feb 2002
Posts: 2,233
H
harold endean Offline
Member
Have you guys seen the new 60 circuit panel yet? I have heard about it and seen pictures in the trade mag, but I haven't seen it yet.

Re: Mixing of equipment on a panelboard? [Re: Joe Tedesco] #202934 09/01/11 11:55 PM
Joined: Jul 2004
Posts: 9,569
G
gfretwell Offline
Member
I believe our friends from the great white north already have 60 circuit panels. I would think it would be trivial to list them here.


Greg Fretwell
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