Panelboard cover question

[masterelect1]

I recently came across a panelboard that did not have a cover. I advised the building super that for safety the panel must be covered. He said he had lost it. I told him to get one. When I came back back several days later, there was the panel covered masterfully with a fully hinged cover made of 1/4" plywood. It looks ok and is quite functional. Is there anything in the NEC which disallows this.



thanks,
John

 

[celtic]

110.3(B) is the first thought.

 

[Buck Parrish]

I recently came across a panelboard that did not have a cover. I advised the building super that for safety the panel must be covered. He said he had lost it. I told him to get one. When I came back back several days later, there was the panel covered masterfully with a fully hinged cover made of 1/4" plywood. It looks ok and is quite functional. Is there anything in the NEC which disallows this.



thanks,
John

The building super was obviously a carpenter.:smile:
You can't use wood no matter how nice it looks. It must be a ul listed product being used with the same.

 

[mikeames]

In addition to the above it's Combustionable.

 

[electricmanscott]

Does the NEC even apply to this guy? :-?

 

[celtic]

Does the NEC even apply to this guy? :-?

Does the NEC apply to man or machine?

Let the philosophy flow :grin:

 

[iwire]

Could someone point out the NEC requirement that either the cabinet or cover that contains a panelboard must be listed?

In my opinion 312.10(C) is the NEC section that will prohibit the wooden door.

 

[Volta]

Haven't found another listing requirement, but "designed for the purpose" 408.38, or "vicinity of easily ignitible material" 240.24(D).

 

[Pierre C Belarge]

The panel enclosure and cover are listed together. If you notice the next time that you read the label in the panel enclosure, it will state which cover(s) are listed to be used with the enclosure.
Besides the fact that wood is combustible and one of the functions of the enclosure/cover is to help contain arcs and sparks, there is another reason for the particular cover listed to be used with the panel enclosure.

Stay tuned for next weeks feature to explain what the other function is...of course unless someone else comes up with it first.

 

[Buck Parrish]

The panel enclosure and cover are listed together. If you notice the next time that you read the label in the panel enclosure, it will state which cover(s) are listed to be used with the enclosure.
Besides the fact that wood is combustible and one of the functions of the enclosure/cover is to help contain arcs and sparks, there is another reason for the particular cover listed to be used with the panel enclosure.

Stay tuned for next weeks feature to explain what the other function is...of course unless someone else comes up with it first.

Okay... Some breaker lock out devices are held in by the cover.:wink:

 

[iwire]

The panel enclosure and cover are listed together.

Does the NEC require that either of those items be listed?:smile:

 

[Volta]

Does the NEC require that either of those items be listed?:smile:

I don't think so, but if

The panel enclosure and cover are listed together. If you notice the next time that you read the label in the panel enclosure, it will state which cover(s) are listed to be used with the enclosure. . .

then 110.3(B).

 

[Pierre C Belarge]

I don't think so, but if

then 110.3(B).

Ditto Volta's response.


Remember, there is still one very important consideration for the panel cover that I have not noticed anyone posting...

 

[boboelectric]

When I can find the panel cover, I 'll find the listing.

 

[donselectric]

panel change time.....:smile:

 

[Fulthrotl]

When I can find the panel cover, I 'll find the listing.

yeah, if the listing is listed on the missing cover, saying that the cover
cannot be missing, is the missing listing a problem, or the missing cover,
listing the missing listing?

say that three times fast. i double dare ya!

ow. i bit my tongue. i have to go now....


randy

 

[iwire]

I don't think so, but if

then 110.3(B).

Ditto Volta's response.

I have not once in this thread said that 110.3(B) may not apply. It is very likely it will. :smile:

Doesn't anyone ever get tired of automatically falling back on 110.3(B)? To me many times that is just taking the easy way out. :-?

Some people like to wrap UL around themselves like a warm cozy blanket and thats fine. Obviously it is good to know the UL requirements but I also like people to know what the NEC requires, it kind of makes sense this being a NEC web site.

All I wanted to point out was that the NEC does not require metal panel cabinets or the doors to be listed. I imagine that there is a reason the the CMP went to the trouble of requiring a listing or preapproval for "Nonmetallic Cabinets" when they do not require it for metal cabinets.

 

[cowboyjwc]

Could someone point out the NEC requirement that either the cabinet or cover that contains a panelboard must be listed?

In my opinion 312.10(C) is the NEC section that will prohibit the wooden door.

I would agree with Bob, wow twice in one day, you're on a roll.:grin:

You may also be able to use 408.7, though it might be a stretch.

 

[masterelect1]

Pictures before and after - note exposed conductors inside of old can.

Double click on pictures to enlarge.

 

[sii]

Uh...aren't the boxes in front of the panel a violation of the code on working space? Can't remember article #'s off the top of my head like the rest of you guys and don't have my code book infront of me.