Hopefully some others will jump in and offer some other suggestions, the info you want is spread out throughout Chapter III and Chapter V of Article 250.

If you have access to the NFPA handbook you can see a lot of different ways of installing a grounding electrode system.

I could run a GEC from the Service Disconnect enclosure to building steel, then on the other side of the building I could run a bonding jumper from building steel to the water service pipe.

This is all shown in the handbook. [Linked Image]

Here is a relevant section.

Quote
250.53 Grounding Electrode System Installation.

(C) Bonding Jumper. The bonding jumper(s) used to connect the grounding electrodes together to form the grounding electrode system shall be installed in accordance with 250.64(A), (B), and (E), shall be sized in accordance with 250.66, and shall be connected in the manner specified in 250.70.

Now we have to decide, are we going to talk about how you and I may do it beyond code [Linked Image] or are we going to stick with what is required.

I will usually jump the water meter without a splice but we are not required to. [Linked Image]

Bob Badger
Construction & Maintenance Electrician
Massachusetts