garage wall boxes
- Thread starter ted sr.
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ryan_618
Senior Member
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- Salt Lake City, Utah
Re: garage wall boxes
In the building code.
In the building code.
Re: garage wall boxes
Ryan:
Can you be more specific? Do the building codes require a fire rated wall? 1 hour or 2 hour? If so, aren't there are UL listings for plastic outlet boxes that without a fireproof putty-pac that meet certain ratings?
Steve
Ryan:
Can you be more specific? Do the building codes require a fire rated wall? 1 hour or 2 hour? If so, aren't there are UL listings for plastic outlet boxes that without a fireproof putty-pac that meet certain ratings?
Steve
luke warmwater
Senior Member
Re: garage wall boxes
In the 2002 IRC. It's not in the NEC.
2002IRC:
R317.3.2 Membrane Penetrations
Exceptions:
1. Steel electrical boxes that do not have 16 sq. in. in area provided the total area of such openings does not exceed 100 sq. in. for any 100 sq. ft. of wall area. Outlet boxes on opposite sides of the wall shall be seperated as follows:
1.1 By a horizontal distance of not less than 24"
1.2 By a horizontal distance of not less than the depth of the wall cavity......
1.3 By solid fire blocking....
1.4 By protecting both outlet boxes by listed putty pads
1.5 By other listed materials and methods
In the 2002 IRC. It's not in the NEC.
2002IRC:
R317.3.2 Membrane Penetrations
Exceptions:
1. Steel electrical boxes that do not have 16 sq. in. in area provided the total area of such openings does not exceed 100 sq. in. for any 100 sq. ft. of wall area. Outlet boxes on opposite sides of the wall shall be seperated as follows:
1.1 By a horizontal distance of not less than 24"
1.2 By a horizontal distance of not less than the depth of the wall cavity......
1.3 By solid fire blocking....
1.4 By protecting both outlet boxes by listed putty pads
1.5 By other listed materials and methods
luke warmwater
Senior Member
Re: garage wall boxes
I should have continued, but he asked about metal.
Exception 2:
Membrane penetrations for listed electrical outlet boxes of any materials are permitted provided such boxes have been tested for use in fire resistant-rated assemblies and are installed in accordance with the instructions included in the listing. Outlet boxes on opposite sides of the wall shall be seperated as follows:
(same as above, minus 1.2)
I should have continued, but he asked about metal.
Exception 2:
Membrane penetrations for listed electrical outlet boxes of any materials are permitted provided such boxes have been tested for use in fire resistant-rated assemblies and are installed in accordance with the instructions included in the listing. Outlet boxes on opposite sides of the wall shall be seperated as follows:
(same as above, minus 1.2)
Re: garage wall boxes
IBC
711.3.2MEMBRANE PENETRATIONS
EX 1 yours perbatum
EX 2 Membrane penetrationsfor listed electrical
outlet boxes of any material are permited provided
such boxes have been testedfor use in fire-resistance- rated assemblies and are installed
in accordance with the instructions included in
the listing.
IT STILL A'INT BROKE
IBC
711.3.2MEMBRANE PENETRATIONS
EX 1 yours perbatum
EX 2 Membrane penetrationsfor listed electrical
outlet boxes of any material are permited provided
such boxes have been testedfor use in fire-resistance- rated assemblies and are installed
in accordance with the instructions included in
the listing.
IT STILL A'INT BROKE
Re: garage wall boxes
I am assuming this is a private residential situation we're talking about? As has been stated, the building code applicable in your area will have the answere to your question. IRC R317.3.2 does not apply to your situation. It applies to separation walls between dwelling units in duplexes or town houses. IBC 711.3.2 will not apply either. If the IRC is the applicable code for your situation then section R309.2 applies. I can't think of any code basis for not allowing a plastic outlet box there. And I am not aware of a code requirement for putty pads. There is not even a code requirement for drywall on the house side of that wall
[ June 14, 2004, 12:27 PM: Message edited by: eprice ]
I am assuming this is a private residential situation we're talking about? As has been stated, the building code applicable in your area will have the answere to your question. IRC R317.3.2 does not apply to your situation. It applies to separation walls between dwelling units in duplexes or town houses. IBC 711.3.2 will not apply either. If the IRC is the applicable code for your situation then section R309.2 applies. I can't think of any code basis for not allowing a plastic outlet box there. And I am not aware of a code requirement for putty pads. There is not even a code requirement for drywall on the house side of that wall
[ June 14, 2004, 12:27 PM: Message edited by: eprice ]
macmikeman
Senior Member
- Location
- Planet macmikeman
Re: garage wall boxes
How about this one. In my area some of the building inspectors get up in arms if you mount a loadcenter in a garage wall that faces into the living area on its backside. I could be wrong, but I thought that loadcenters were 2 hour rated. Does anybody know more about this?
How about this one. In my area some of the building inspectors get up in arms if you mount a loadcenter in a garage wall that faces into the living area on its backside. I could be wrong, but I thought that loadcenters were 2 hour rated. Does anybody know more about this?
Re: garage wall boxes
eprice and apauling are dead on
but the drywall thing?
the inspector in indiana tells me that
a CARLON B118A isn't rated for 2hr
and they require a metal bx w/puddy
or firecaulk on the back
they are more than 24" from others
i can't find anything to support his
reason........it's a single family....
i'm meeting with at lunch with a cutsheet
from carlon and UL
eprice and apauling are dead on
but the drywall thing?
the inspector in indiana tells me that
a CARLON B118A isn't rated for 2hr
and they require a metal bx w/puddy
or firecaulk on the back
they are more than 24" from others
i can't find anything to support his
reason........it's a single family....
i'm meeting with at lunch with a cutsheet
from carlon and UL
macmikeman
Senior Member
- Location
- Planet macmikeman
Re: garage wall boxes
Thanks Apualing, I have seen the sq in limitation probably a dozen times and until now only mind-asociated it with junction boxes, not elec. panels. Further proof why this forum is a great way to further my personal education on all things electric.
Thanks Apualing, I have seen the sq in limitation probably a dozen times and until now only mind-asociated it with junction boxes, not elec. panels. Further proof why this forum is a great way to further my personal education on all things electric.
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