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#92066 - 02/24/05 07:44 PM How deep?
George Little Offline
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Registered: 01/18/04
Posts: 1488
Loc: Michigan USA
How deep should electrical conduit be under a garage floor? Typically 4" thick concrete.
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#92067 - 02/24/05 10:19 PM Re: How deep?
gfretwell Offline


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Registered: 07/20/04
Posts: 9039
Loc: Estero,Fl,usa
I see the question with 300.5 but I think it is still "under a building" and 0" min below the slab.
If this is a car port or parking pad (outside parking area in a residence)it does look like 18"
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#92068 - 02/25/05 01:46 AM Re: How deep?
shortcircuit Offline
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Registered: 06/27/04
Posts: 608
Loc: massachusetts
My interpretation...0" deep, and the code doesn't specify the need for concrete cover.

shortcircuit
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#92069 - 02/25/05 06:04 AM Re: How deep?
George Little Offline
Member
Registered: 01/18/04
Posts: 1488
Loc: Michigan USA
Notice that if we are talking Service Conductors under a building with no concrete floor we are required to have 18" of cover- 230.6(4). We could have this with a building such as a pole barn etc.

Keep editing this till you get it right George


[This message has been edited by George Little (edited 02-26-2005).]
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#92070 - 02/25/05 05:56 PM Re: How deep?
HLCbuild Offline
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Registered: 12/05/04
Posts: 209
Loc: Herndon,Va USA
I think we go to Art. 100 definitions and review "Garage" which is very specific in saying this is a "building". From here it's back to Art 300-5 "under a building" which requires 0 depth.
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#92071 - 02/26/05 04:53 PM Re: How deep?
PCBelarge Offline
Member
Registered: 06/08/03
Posts: 681
Loc: Dobbs Ferry, NY, USA
Read George's post - 230.6(4
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