docj67
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Hey thx for reading!
My understanding of 250 53 A is that
If it’s only one electrode then it needs to be 25ohms or less.
SO if your chosen primary electrode is greater then 25ohms and u cant easily measure then 2nd, what do you do?
I'd like to by an 800 dollar GEP rig but would prefer not to yet.
This article I read in ECM web mag http://www.ecmweb.com/content/who-cares-about-25-ohms-or-less
and the last hr I just spent reading article 250 up to 250.80 seem to suggest that multiple grounding electrodes that meet code are how it's done if you cant measure the resistance of one Grounding Electrode.
If there’s one ground electrode w resistance > 25 ohms how many supplementals do you need and I believe the answer is one.
Thx so much
My understanding of 250 53 A is that
If it’s only one electrode then it needs to be 25ohms or less.
SO if your chosen primary electrode is greater then 25ohms and u cant easily measure then 2nd, what do you do?
I'd like to by an 800 dollar GEP rig but would prefer not to yet.
This article I read in ECM web mag http://www.ecmweb.com/content/who-cares-about-25-ohms-or-less
and the last hr I just spent reading article 250 up to 250.80 seem to suggest that multiple grounding electrodes that meet code are how it's done if you cant measure the resistance of one Grounding Electrode.
If there’s one ground electrode w resistance > 25 ohms how many supplementals do you need and I believe the answer is one.
Thx so much