touch and step potential

[kckeng]

is there a requirement to have a ground loop around a building to ensure against touch potential?
(please state rule#)

Or is this only for substations (step and touch)

thanks

 

[Dennis Alwon]

Unless the engineer specs a ground loop you have about 8 choices for grounding. 250.52

 

[Eddy_Current]

is there a requirement to have a ground loop around a building to ensure against touch potential?
(please state rule#)

Or is this only for substations (step and touch)

thanks

If the building has voltages lower than 750 volts then no, a ground loop is not required. Section 10 grounding rules apply.

If the building has a vault with voltages exceeding 750 volts then there must be station ground electrode which follows the minimum standards in 36-302.

Most buildings with electrical vaults will have engineered grounding requirements meeting or exceeding the requirements in section 36

 

[Dennis Alwon]

If the building has voltages lower than 750 volts then no, a ground loop is not required. Section 10 grounding rules apply.

If the building has a vault with voltages exceeding 750 volts then there must be station ground electrode which follows the minimum standards in 36-302.

Most buildings with electrical vaults will have engineered grounding requirements meeting or exceeding the requirements in section 36

I missed that this is in the canadian forum