Touch and Step potential

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Rai136926

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Location
seattle, wa
When is it necessary by Code to calculate Touch and Step voltage and meet the tolerable limits.

I have a ground grid design with Rg less than 25 ohm, but Touch and Step voltage exceed the tolerable limits. Is it required by NEC or other code to bring the Touch and Step voltage under tolerable limits.
 

don_resqcapt19

Moderator
Staff member
Location
Illinois
Occupation
retired electrician
The NEC does not really address that issue. I would expect that the National Electrical Safety Code (NESC) would as that is what the power utilities use.
 
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