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#97636 - 03/09/06 08:28 PM table 300.5
ngoody24 Offline
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Registered: 09/25/05
Posts: 33
Loc: pace,FL, United States
Has this table changed between 2002-2005? I've been using Stallcup's Master study guide and a question has me stumped. Here is the question "Rigid metal conduit should be buried in the ground at a minimum of __ inches?"

A)4 B)6 C)12 D)18

I am coming up with an answer different than what the study guide says I should get using this table. I am using a 2002 code book,but a 2005 study guide.

Thanks

Nathan
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2017 / 2014 NEC & Related Books and Study Guides
#97637 - 03/09/06 08:51 PM Re: table 300.5
gfretwell Online   content


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Registered: 07/20/04
Posts: 9039
Loc: Estero,Fl,usa
6"?
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#97638 - 03/09/06 08:58 PM Re: table 300.5
ngoody24 Offline
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Registered: 09/25/05
Posts: 33
Loc: pace,FL, United States
my answer was 4" so is the 2005 table different than the 2002 table?
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#97639 - 03/10/06 02:55 AM Re: table 300.5
Tiger Offline
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Registered: 05/04/05
Posts: 706
Loc: Crystal Lake, IL USA
ngoody 24

Table 300.5 is the same (2002 & 2005) in Column 2 (RMC & IMC).

All locations not specified below...6".

Dave
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#97640 - 03/10/06 05:17 PM Re: table 300.5
ShockMe77 Offline
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Registered: 06/11/05
Posts: 821
Loc: Rahway, New Jersey
That's one of the nice things about using rigid - not having to dig as deep!
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#97641 - 03/11/06 05:07 AM Re: table 300.5
electure Offline


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Registered: 12/24/00
Posts: 4259
Loc: Fullerton, CA USA
The 6" cover requirement was first called out in the '71 or '75 NEC, and hasn't changed since.
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#97642 - 03/11/06 07:31 AM Re: table 300.5
renosteinke Offline
Cat Servant
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Registered: 01/22/05
Posts: 5316
Loc: Blue Collar Country
The fine print of the code aside, I like things DEEP. For me, this means a minimum of being a coupl incehs deeper than the bottom of a slab, and deeper than the blade of a shovel (about 12").

Why? Because I don't want the pipe hit every time the gardner plants a flower or fixes a leaky irrigation pipe. I don't want the slab to act like "the worlds' dullest scissors" where the pipe exits. And I don't want the pipe cut when the plumber has to open up the slab to replace a drain.
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#97643 - 03/11/06 08:41 AM Re: table 300.5
gfretwell Online   content


Member
Registered: 07/20/04
Posts: 9039
Loc: Estero,Fl,usa
Good point about the plumber. Rigid is tough stuff but no match for a 14" chop saw.
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