when did ground rods be required?

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Don’t think they are required if a long enough water pipe supplies the home..metal water pipe... so since many homes in cities were on central water lines of metal water pipes, they used the metal water pipes as ground... but, could be wrong...lol

i often am wrong.
 
My old house was built in the 1961 and had no ground rods, when I upgraded the service in 1994 we were required to install one rod.
 
As I read it, the NEC doesn't require ground rods. They're simply allowed to be used, and if so must meet certain requirements.

Rods are usually required by the local POCOs.
 
The question is more about when a supplemental electrode for the water pipe was required. The use of ground rods was decades ahead of using a CEE to supplement the water pipe electrode.
 
infinity said:
The question is more about when a supplemental electrode for the water pipe was required. The use of ground rods was decades ahead of using a CEE to supplement the water pipe electrode.
Click to expand...

I am guessing somewhere in the 80s when the install of PVC for water lines became so common.

IIRC, this is when the rules in 250.130 changed also, no more running an EGC to just any part of a water pipe system.
 
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