Best way to run ground conductor in a crawl space?

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Old 08-26-19, 05:27 AM
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Best way to run ground conductor in a crawl space?

I'm doing work on my electrical system and am not happy with the way I ran the ground conductor through my crawlspace 25+ years ago so I want to redo it. It is grounding a panel on an interior wall about 17' from the rod. I'm thinking of running it through 1/2" conduit mounted on the underside of my floor joists instead of running it through holes drilled in the floor joists.

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Old 08-26-19, 06:05 AM
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Hi, what size is the ground wire? You can use conduit I would suggest PVC.
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Old 08-26-19, 06:24 AM
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Leave it through the holes or staple to the bottom of the joists.
 
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Old 08-26-19, 06:28 AM
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6awg bare copper.

I had a plumber in there a year or so ago replacing a water heater and just discovered he had disrupted the ground wire so much in his work (it runs near the water heater) I was concerned it could have be severed. Hence my desire to protect it.

With the addition of security system(s), cameras, exterior lights, insulation, etc. I've found myself (and others) in that crawl space a lot more than I had ever anticipated.
 
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Old 08-26-19, 06:29 AM
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Are you worried about heat/fire of the ground rod wire in case of some fault? Very few scenarios will result in a #6 overheating on its way to a single ground rod.
 
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Old 08-26-19, 06:43 AM
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I guess my primary concern is it being disrupted by someone working in the crawl space.
Stapling it to the underside of the floor joists should be adequate, I guess.

Thanks!
 
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Old 08-26-19, 09:57 AM
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Hi, if you have a sill and the wire is long enough you can staple along it.
Geo
 
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Old 08-26-19, 10:00 AM
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Stapling it to the underside of the floor joists should be adequate
That's what I would do... but there would be nothing wrong with using a 1/2" PVC conduit as protection if you wanted. No need to use boxes or anything with it, since it's just protection.
I wouldn't use EMT or metal conduit as you'll have additional bonding requirements.
 
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Old 08-26-19, 10:26 AM
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Code says #6 can be stapled without additional support or protection. The GEC (bare copper ground wire) should be run as straight and directly as possible from the panel to the ground rod(s). It can run through PVC conduit if you want, but don't use metal. The primary purpose of the GEC is protection from lightning -- metal conduit and sharp bends make it less effective.
 
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