Ground rods
- Thread starter bwyllie
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ryan_618
Senior Member
- Location
- Salt Lake City, Utah
Re: Ground rods
My opinion is that its not required in the application you spelled out. If you decide you want to drive one, you have to use it. Doesn't matter to me though.
My opinion is that its not required in the application you spelled out. If you decide you want to drive one, you have to use it. Doesn't matter to me though.
jxofaltrds
Inspector Mike®
- Location
- Mike P. Columbus Ohio
- Occupation
- ESI, PI, RBO
Re: Ground rods
I disagree.
What about the requirement for a supplemental ground rod?
If you are "bonding" the water meter(?), to what are you bonding it?
Mike P.
I disagree.
What about the requirement for a supplemental ground rod?
If you are "bonding" the water meter(?), to what are you bonding it?
Mike P.
Re: Ground rods
I agree with Mike, if you have a water meter to ground/Bond it implies you have a water line, and if you have a water line it must be used as a grounding electrode, then accordingly it must be supplemented by a ground rod(s).
However, if the water line to the house is plastic then you would bond the interior water lines if metal, but what would be the purpose of bonding the meter if one side is plastic?
we usually use ground rods if there is no water line or if plastic and bond the interior water lines if metal.
Tom
[ July 29, 2003, 08:06 PM: Message edited by: thomasf ]
I agree with Mike, if you have a water meter to ground/Bond it implies you have a water line, and if you have a water line it must be used as a grounding electrode, then accordingly it must be supplemented by a ground rod(s).
However, if the water line to the house is plastic then you would bond the interior water lines if metal, but what would be the purpose of bonding the meter if one side is plastic?
we usually use ground rods if there is no water line or if plastic and bond the interior water lines if metal.
Tom
[ July 29, 2003, 08:06 PM: Message edited by: thomasf ]
Re: Ground rods
Mike P, maybe I am wrong, but as I read 250.53(D)(2) a water pipe shall be supplemented by an additional electrode specified in 250.52(A)(2) through (A)(7).
The condition describes a water pipe and building steel. The building steel supplements the water pipe (250.52(A)(2)).
Do I mis-understand your post?
Mike P, maybe I am wrong, but as I read 250.53(D)(2) a water pipe shall be supplemented by an additional electrode specified in 250.52(A)(2) through (A)(7).
The condition describes a water pipe and building steel. The building steel supplements the water pipe (250.52(A)(2)).
Do I mis-understand your post?
jxofaltrds
Inspector Mike®
- Location
- Mike P. Columbus Ohio
- Occupation
- ESI, PI, RBO
Re: Ground rods
Dereck
Is the steel the electrode?
Mike P.
Dereck
Is the steel the electrode?
Mike P.
Re: Ground rods
If the building steel is effectively grounded, then I agree with what Dereck and Ryan have said. But if the only grounding electrodes are a metal water line (which must be supplemented) and building steel, I would want to look closely at the building steel to make sure that it really is effectively grounded so that it can be considered an electrode.
I haven't been faced with this situation, since around here a Ufer ground is typically also provided. So I am curious, What would make the rest of you feel comfortable with considering the building steel at a particular installation as being effectively grounded? The definition in article 100 seems to imply more than just casual acceptance. Bennie has suggested a resistance test.
[ July 31, 2003, 05:04 PM: Message edited by: eprice ]
If the building steel is effectively grounded, then I agree with what Dereck and Ryan have said. But if the only grounding electrodes are a metal water line (which must be supplemented) and building steel, I would want to look closely at the building steel to make sure that it really is effectively grounded so that it can be considered an electrode.
I haven't been faced with this situation, since around here a Ufer ground is typically also provided. So I am curious, What would make the rest of you feel comfortable with considering the building steel at a particular installation as being effectively grounded? The definition in article 100 seems to imply more than just casual acceptance. Bennie has suggested a resistance test.
[ July 31, 2003, 05:04 PM: Message edited by: eprice ]
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