4 1 4 or 4 electrical box forum 2021 IECC R402.4.6 specifies NEMA OS 4 boxes when boxes are installed in the building thermal envelope, Table R402.4.1.1 for electrical /phone boxes in exterior walls can be .
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What is the smallest depth size for a 4"x4" wall recessed junction box in order to fit an 1-1/4" conduit on it? How about the depth for an 1-1/2" conduit. I work as an Audio-Video systems consultant and one odd standard I've observed occasionally is 4" or 4-11/16" square boxes (with 1 or 2 . I'd guess that it is a plaster ring, possibly over a larger than 4 square box. Some of them are welded and very square. Don't recall ever seeing a one piece box like that. In any . In my 1970 house there are many metal 4x4 electrical boxes that are shallower than the standard 1-1/2" depth. They measure about 1/8" over 1" with only 1/2" knock out .
What kind of junction boxes do you use for splicing 4 gauge wire? The normal boxes, even the 4 11⁄16 x 2 1⁄8 square box, don't seem to allow anything larger than 6 gauge . 2021 IECC R402.4.6 specifies NEMA OS 4 boxes when boxes are installed in the building thermal envelope, Table R402.4.1.1 for electrical /phone boxes in exterior walls can be . I can't seem to fit 2 outlets in a 4 in metal box because the EMT connector nut and insulation bushing are in the way. If I remove the bushing I can get it in but the wires and outlet . Does anyone else refer to a 4" octagon box, as a 4" round box? I always called it a 4-O box or "the round lookin one" when addressing apprentice. I've never heard it called a .
Steve Hoffman Music Forums. Home Forums > Discussions > Music Corner > Jimi Hendrix - Electric Lady Studios Box Set - 4th October 2024 * . BOG material issued by EH . What is the smallest depth size for a 4"x4" wall recessed junction box in order to fit an 1-1/4" conduit on it? How about the depth for an 1-1/2" conduit. I work as an Audio-Video systems consultant and one odd standard I've observed occasionally is 4" or 4-11/16" square boxes (with 1 or 2 gang plaster rings) being installed instead of true 1 or 2 gang boxes. I'd guess that it is a plaster ring, possibly over a larger than 4 square box. Some of them are welded and very square. Don't recall ever seeing a one piece box like that. In any case, don't see an alternative to cutting a bigger hole in the wall.
There is no NEC rule preventing the use of a 1" EMT with 4" square boxes. I agree with Bob there is no code however, the only boxes I have seen with 1" KO are the 4-11/16 boxes. This does not mean you cannot knockout your own KO. The wire size is the key factor as mentioned above and the fact that it has bends etc. Is it permissible to mount 4 sq boxes using the holes in the side to run a screw through? I have an install to do in a shed/barn (no animals or agriculture) that the support posts and slating for the outside metal is going to be left exposed. IOW, it will be open inside.
One day Ernie Raco (of Raco metal box fame) wanted to make a larger box than a 4" square. He had some scrap metal laying around and well it just so happened that the width of this new box after forming worked out to 4-11/16" square. In my 1970 house there are many metal 4x4 electrical boxes that are shallower than the standard 1-1/2" depth. They measure about 1/8" over 1" with only 1/2" knock out holes. They fit perfectly on top of the masonry wall, with a 3/4" furring plus 1/2" sheet rock, resulting in the box being flushed with the finished wall after adding a flat mud ring. The reason for the 4 11/16" box is because it is the smallest size box you could manufacture to fit two 1'' conduits on one side. I usually use plastic electrical boxes but I was looking at square metal boxes today and was wondering why they come in two sizes, 4 inch and 4 11/16 in. Why are there two sizes and when would you want to use one over the other?
What kind of junction boxes do you use for splicing 4 gauge wire? The normal boxes, even the 4 11⁄16 x 2 1⁄8 square box, don't seem to allow anything larger than 6 gauge to enter them according to 314.16A and 314.16B. An electrical supply will have many sizes of junction boxes. Not box stores! What is the smallest depth size for a 4"x4" wall recessed junction box in order to fit an 1-1/4" conduit on it? How about the depth for an 1-1/2" conduit. I work as an Audio-Video systems consultant and one odd standard I've observed occasionally is 4" or 4-11/16" square boxes (with 1 or 2 gang plaster rings) being installed instead of true 1 or 2 gang boxes.
I'd guess that it is a plaster ring, possibly over a larger than 4 square box. Some of them are welded and very square. Don't recall ever seeing a one piece box like that. In any case, don't see an alternative to cutting a bigger hole in the wall. There is no NEC rule preventing the use of a 1" EMT with 4" square boxes. I agree with Bob there is no code however, the only boxes I have seen with 1" KO are the 4-11/16 boxes. This does not mean you cannot knockout your own KO. The wire size is the key factor as mentioned above and the fact that it has bends etc. Is it permissible to mount 4 sq boxes using the holes in the side to run a screw through? I have an install to do in a shed/barn (no animals or agriculture) that the support posts and slating for the outside metal is going to be left exposed. IOW, it will be open inside.
One day Ernie Raco (of Raco metal box fame) wanted to make a larger box than a 4" square. He had some scrap metal laying around and well it just so happened that the width of this new box after forming worked out to 4-11/16" square. In my 1970 house there are many metal 4x4 electrical boxes that are shallower than the standard 1-1/2" depth. They measure about 1/8" over 1" with only 1/2" knock out holes. They fit perfectly on top of the masonry wall, with a 3/4" furring plus 1/2" sheet rock, resulting in the box being flushed with the finished wall after adding a flat mud ring. The reason for the 4 11/16" box is because it is the smallest size box you could manufacture to fit two 1'' conduits on one side. I usually use plastic electrical boxes but I was looking at square metal boxes today and was wondering why they come in two sizes, 4 inch and 4 11/16 in. Why are there two sizes and when would you want to use one over the other?
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