George:

Debatable text...."(D) Isolated Receptacles. Where installed for the reduction
of electrical noise (electromagnetic interference) on the grounding circuit"

Perhaps this can be thought to mean IF the intent of the specific installation was for the reduction of electrical noise on the grounding circuit. The word 'shall' does not enter the paragraph until a sentence or two later.

Going back to your opening inquiry....was the church concerned about electrical noise?


John