one could have a steel quonset hut on a 'lightning friendly' elevation assume a single branch circuit, and thus no GES except for say, the mother building's 1000' away, connected by only the EGC right?

this doesn't make said EGC the GES does it? ,(in theory) say in upsizing the conductors ??

on the other claw, what say if the same building had no electrical connection, yet had a complete Ufer system installed?

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just looking for some enlightenment... [Linked Image]

[This message has been edited by sparky (edited 01-31-2004).]