4 story apartment complex built in 1995. As near as I can determine the entire structure is ONE building. There a six 800A, 120/208Y 'services' fed from utility padmounts and located in DIFFERENT parts of the building (floors and wings). Service conductors are routed to each electrical room through poured concrete encased conduits to an 800A fused switch. This then feeds the meter bank/apartment breaker group.
Now that's all pretty interesting (and I'll assume the AHJ gave the contractor permission to do that) but what I'm really concerned with is the GECs. There is one 4/0 AL run from each disconnect to the common utility space where the water main enters. The main is 4" CU and each GEC is separately clamped to the pipe as it enters. No supplemental electrodes provided. The water piping in the building is plastic after it leaves this room.
Workmanship looks good but does anyone have any comments on that lash-up??
