Replacing Grounding Electrode Conductor

[bjp_ne_elec]

Have a situation where I have to change the grounging electrode conductor due to it being damaged from years of bumping things in to it where it leaves the ground. What's the safest way?

Was thinking of running new conductors and ground rods, then just tie it in, followed up by disconnecting the old one. Hate to pull the meter for this. Anyone else see it differently?

Thanks

Brett

 

[Pierre C Belarge]

If the Ground Rods are supplementing the cold water, there is no problems with disconnecting the GEC to the rod. Your plan is fine though either way.

 

[petersonra]

why would you replace the ground rods? are they worn out?

why can't you just add a wire around the damaged area and connect it to the old one above where the damage starts?

 

[bjp_ne_elec]

I'm not absolutely sure I'm going to replace them - but the owner tells me he has reason to be suspicious about how solid they're tied in. I think he indicated there was some digging around, so I'd really like to try and Megger them to see what resistance I get.

Anyone ever rent a Megger from a supply house? I'm hoping someone around here that rents equipment rents these "bad boys".

THanks

Brett

 

[iwire]

I'd really like to try and Megger them to see what resistance I get.

Brett a typical Mega meter will not give you a grounding system resistance test.

You would need to get hold of a ground resistance tester if you really want to get a resistance figure.

I would not bother.

 

[bjp_ne_elec]

Iwire - I stand corrected - that's actually what I was thinking - a Megger is used to check insulation resistance - and obviously that should be a very high value - in the Megohm range.

Thanks,

Brett

 

[MeggerMan]

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[zog]

Have someone come out and do a 3 point fall of potential ground test, this test only takes about 1/2 hour if you know what you are doing and you can have it done with a graphical report for about $200. You can fond a certified tester to do this at www.netaworld.org