grondrod

[domnic]

Ihave two services sisd by side one three phase one single phase can i use the same groundrod ?

 

[Volta]

Yup, in fact 250.50 requires it.

 

[Dan coulstring]

250.58 Common Grounding Electrode.
Where separate services, feeders, or branch circuits
supply a building and are required to be connected to a
grounding electrode(s), the same grounding electrode(s) shall
be used.
Two or more grounding electrodes that are bonded together
shall be considered as a single grounding electrode
system in this sense.