More than 42 circuit panels

[tom baker]

2008 NEC allows panels with more than 42 circuits. Are they now available?

 

[quinn77]

yes.......

 

[dnbob]

Square D has panelboards available up to 84 circuits, I believe. I don't think too much of them, as I am not sure there is enough space to bring in that many conduits, especially with 1 neutral to every "hot". I would still use double tubs for most applications, unless maybe they are filled with smaller 3 phase loads.

Bob

 

[brother]

2008 NEC allows panels with more than 42 circuits. Are they now available?

Yes, just seen a 60 circuit installed here lately. I wonder what lead up to the 42 max in panels in the first place.

 

[frenchelectrican]

I haven't see it yet in Wisconsin { sorry I am stuck in France for pretty long term working vaction here }

But just keep in your mind some states may still have local codes may override the NEC codes related to the 42 circuit.

Now speaking of oringal story start from a theatre centre got too many conductors in there and got overheated and start the fire.

{ I think that how it got enforced with 42 circuit rules if I am wrong let me know }

Merci,Marc

 

[kwired]

Square D has panelboards available up to 84 circuits, I believe. I don't think too much of them, as I am not sure there is enough space to bring in that many conduits, especially with 1 neutral to every "hot". I would still use double tubs for most applications, unless maybe they are filled with smaller 3 phase loads.

Bob

If you are only using top or bottom Ko's you definately need to use more than two poles per KO. not easy to do with NM cable or MC cable. With raceways it is probably not much a problem as long as you use at least 3-6 poles per raceway.

 

[mcclary's electrical]

If you are only using top or bottom Ko's you definately need to use more than two poles per KO. not easy to do with NM cable or MC cable. With raceways it is probably not much a problem as long as you use at least 3-6 poles per raceway.

double barrel connector, 12/4 mc 6 poles per ko

 

[tom baker]

Yes, just seen a 60 circuit installed here lately. I wonder what lead up to the 42 max in panels in the first place.

A 1933 panelboard fire that had all the flammable insulation, cloth covered rubber.

 

[frenchelectrican]

A 1933 panelboard fire that had all the flammable insulation, cloth covered rubber.

If I am correct that was from Wassolf Hotel or the Theatre centre ?


Merci,Marc

 

[Cow]

I can hardly wait to start doing service changes on 60-84 circuit cans!!

I need at least 60 circuits in an office I'm redoing, I decided I'd rather install a couple of cheap 30/40's than try to fight that many circuits into one 60+ circuit can. That is, if Siemens even made one that big....

 

[kbsparky]

I have a 60-space monster panel here waiting for the right job to install it on.

It's a Square D type QO panel.

I'll see if I can upload a picture of it later this week.

 

[kwired]

double barrel connector, 12/4 mc 6 poles per ko

do you have connectors small enough they will not block the use of other KO's. Some clamp type romex connectors will not fit with adjacent ko containing the same type connector.

 

[Dennis Alwon]

Ge can make one as they do for commercial jobs but they, as of yet, do not have a 60 circuit pre-made panel.

 

[kbsparky]

Here is the Square D 60 space monster panel. Our Canadian friends will notice the blast shield located over the mains area. I always wondered what those notches were for in the enclosure can. Now I know they are to hold that shield in place.

 

[electricmanscott]

Just picked up a Sq D Homeline 40/60 panel I'll be installing tomorrow.

$260.00

There is also a 42/52 that was 10 bucks le$$

 

[kwired]

It is good to see they added extra neutral terminals. I have had 40 circuit pretty well full many times especially if service panel and equipment grounds are landed on neutral bar.

 

[kbsparky]

Yes, 2 extra neutral bars, as well as 2 ground bars. And, a grounding lug at the top (did you catch that?)

 

[kwired]

Yes, 2 extra neutral bars, as well as 2 ground bars. And, a grounding lug at the top (did you catch that?)

I am guessing that is only included in those canada models with the line shield so you do not have to try to get the supply grounding conductor past the shield. (I did see it.)