ground rods other than point of service.

[Vincent Hetrick]

My local jurisdiction is requiring 2 additional ground rods installed to outbuildings fed form an existing service. eg. a metal building is set on a property that already has a house on it. the house has its service and we run from a panel to feed the building with a 60 amp sub feed. wouldn't this be creating multiple grounding electrodes and in direct violation of the NEC?

 

[roger]

This has been a requirement for many code cycles, read 250.32. There is nothing wrong with installing multiple electrodes however, they can not create parallel neutral paths or loops.

Roger

 

[infinity]

As Roger stated connecting the outbuilding to a GES is required by the NEC. I'm assuming that you ran a 4-wire feeder to the outbuilding?

 

[Vincent Hetrick]

to the grounding system I agree which we always do including attaching to building steel. along with this attachment they want 2 additional rods connected. Exhibit 250.18 and 250.19 actually cleared up the difference as far as when required thank you both for the help!