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#92066 - 02/24/05 11:44 PM How deep?  
George Little  Offline
Member
Joined: Jan 2004
Posts: 1,489
Michigan USA
How deep should electrical conduit be under a garage floor? Typically 4" thick concrete.


George Little

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#92067 - 02/25/05 02:19 AM Re: How deep?  
gfretwell  Offline


Member
Joined: Jul 2004
Posts: 9,059
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"


Greg Fretwell

#92068 - 02/25/05 05:46 AM Re: How deep?  
shortcircuit  Offline
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Joined: Jun 2004
Posts: 608
massachusetts
My interpretation...0" deep, and the code doesn't specify the need for concrete cover.

shortcircuit


#92069 - 02/25/05 10:04 AM Re: How deep?  
George Little  Offline
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Joined: Jan 2004
Posts: 1,489
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 [Linked Image]


[This message has been edited by George Little (edited 02-26-2005).]


George Little

#92070 - 02/25/05 09:56 PM Re: How deep?  
HLCbuild  Offline
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Joined: Dec 2004
Posts: 209
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.


#92071 - 02/26/05 08:53 PM Re: How deep?  
PCBelarge  Offline
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Posts: 681
Dobbs Ferry, NY, USA
Read George's post - 230.6(4


Pierre Belarge


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