1900 or handy box
- Thread starter gregory
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hurk27
Senior Member
- Location
- Portage, Indiana NEC: 2008
Re: 1900 or handy box
I think this would not allow it
314.23 Supports.
(B) Structural Mounting. An enclosure supported from a structural member of a building or from grade shall be rigidly supported either directly or by using a metal, polymeric, or wood brace.
(1) Nails and Screws. Nails and screws, where used as a fastening means, shall be attached by using brackets on the outside of the enclosure, or they shall pass through the interior within 6 mm (? in.) of the back or ends of the enclosure .
The two holes that are provided at the front of the box have been generaly used to retain wires when you pull in addtional wires to keep from pulling the exsisting wires out and not for support.
[ May 12, 2003, 12:13 AM: Message edited by: hurk27 ]
I think this would not allow it
314.23 Supports.
(B) Structural Mounting. An enclosure supported from a structural member of a building or from grade shall be rigidly supported either directly or by using a metal, polymeric, or wood brace.
(1) Nails and Screws. Nails and screws, where used as a fastening means, shall be attached by using brackets on the outside of the enclosure, or they shall pass through the interior within 6 mm (? in.) of the back or ends of the enclosure .
The two holes that are provided at the front of the box have been generaly used to retain wires when you pull in addtional wires to keep from pulling the exsisting wires out and not for support.
[ May 12, 2003, 12:13 AM: Message edited by: hurk27 ]
- Location
- Illinois
- Occupation
- retired electrician
Re: 1900 or handy box
As long as the fastening device does not go through the interior of the box, I see no problem with using the holes for screws or nails.
Don
As long as the fastening device does not go through the interior of the box, I see no problem with using the holes for screws or nails.
Don
cm
Member
- Location
- Pennsylvania
Re: 1900 or handy box
Whats the differnce if the holes are in the back or side?,why / how dose the mfr get it thru ul with holes in the side of it, what about tek screws thru the side of a 4x4 on a steel stud same principal?
Whats the differnce if the holes are in the back or side?,why / how dose the mfr get it thru ul with holes in the side of it, what about tek screws thru the side of a 4x4 on a steel stud same principal?
- Location
- Illinois
- Occupation
- retired electrician
Re: 1900 or handy box
Screws through the holes on one side of the box directly into the structrual member will provide rigid support for the box. This will provide the same amout of support as when a "bracket" box it mounted to a structural member.
Don
Screws through the holes on one side of the box directly into the structrual member will provide rigid support for the box. This will provide the same amout of support as when a "bracket" box it mounted to a structural member.
Don
hurk27
Senior Member
- Location
- Portage, Indiana NEC: 2008
Re: 1900 or handy box
Don if I remember right the reasone for not allowing the screw and nail heads on the insid of the box is because of the sharp edges that can nick the wire. I think this was in a ROP and this was the reasone for the wording of 314.23(B) (1)
(1) Nails and Screws. Nails and screws, where used as a fastening means, shall be attached by using brackets on the outside of the enclosure , or they shall pass through the interior within 6 mm (? in.) of the back or ends of the enclosure .
Don if I remember right the reasone for not allowing the screw and nail heads on the insid of the box is because of the sharp edges that can nick the wire. I think this was in a ROP and this was the reasone for the wording of 314.23(B) (1)
(1) Nails and Screws. Nails and screws, where used as a fastening means, shall be attached by using brackets on the outside of the enclosure , or they shall pass through the interior within 6 mm (? in.) of the back or ends of the enclosure .
cm
Member
- Location
- Pennsylvania
Re: 1900 or handy box
Hurk surface mounted emt with pressed steel boxes how are you suppost to fasten it liquid nail?,ever gone back where phase grounded out to a green hexed ground screw as required by code ,some of the things in the code make me wonder!
[ May 13, 2003, 09:39 PM: Message edited by: cm ]
Hurk surface mounted emt with pressed steel boxes how are you suppost to fasten it liquid nail?,ever gone back where phase grounded out to a green hexed ground screw as required by code ,some of the things in the code make me wonder!
[ May 13, 2003, 09:39 PM: Message edited by: cm ]
- Location
- Illinois
- Occupation
- retired electrician
Re: 1900 or handy box
Wayne,
I don't agree that 314.23(B)(1) prohibits the use of screws or nails through one side of a box. These screws or nails do not pass through the interior of the box and therefore are not prohibited by the section. There was a wording change made in the '99 code without any substatiation of any type of problem. The wording prior to the '99 code said: "Nails, where used as a fastning means, shall be permitted to pass through the interior of the enclosure if located within 1/4" of the back or ends of the enclosure". In the '02 code, the words "or screws" were added to the section.
don
Wayne,
I don't agree that 314.23(B)(1) prohibits the use of screws or nails through one side of a box. These screws or nails do not pass through the interior of the box and therefore are not prohibited by the section. There was a wording change made in the '99 code without any substatiation of any type of problem. The wording prior to the '99 code said: "Nails, where used as a fastning means, shall be permitted to pass through the interior of the enclosure if located within 1/4" of the back or ends of the enclosure". In the '02 code, the words "or screws" were added to the section.
don
Re: 1900 or handy box
Outlet boxes, without mounting brackets, are not intended to mount on studs or joists. They must have a metal or wood brace.
The holes in the side and back are not for mounting the box. The center KO, in the back, is for mounting the box with a brace and fixture hickey in overhead locations. The holes are for venting the heat generated by the light fixture.
[ May 14, 2003, 11:09 AM: Message edited by: bennie ]
Outlet boxes, without mounting brackets, are not intended to mount on studs or joists. They must have a metal or wood brace.
The holes in the side and back are not for mounting the box. The center KO, in the back, is for mounting the box with a brace and fixture hickey in overhead locations. The holes are for venting the heat generated by the light fixture.
[ May 14, 2003, 11:09 AM: Message edited by: bennie ]
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