They should be testing for current not voltage. Voltage is indeed evidence of current but higher voltages are not indicative of dangerous currents and one can by changing distances and load resistance get different voltage readings off the same ground current. In fact, if you examine their procedure you'll see that if the ground is saturated with acidic rain water the ground current would be higher than normal but some of these test methods will indicate lower voltage readings. Look, we all know the 5000 volt shock I get from the static charge on my body when I touch a grounded object is not going to do me harm but the 277 volt shock from a lighting fixture is potentially fatal. It's current that does harm and kills. The term "stray voltage" is an unfortunate one and very misleading. "Stray current " would eliminate static affects and be more descriptive. Bob
Reply to this comment | 
Send to a Friend