As a european supplier we are confused with the various terms and numbers used for power supply specs in north america. Terms like nominal system voltage, nominal utilization voltage, service voltage and service&utilization voltage in relation with 460 or 480VAC, resp. 575 or 600VAC do not mean...
Having more then 42 poles, i need to use Multi-Section Panelboards interconnected via Gutter Taps, Sub-Feed Lugs or Through-Feed Lugs.
1) How many panels (max) can be connected to be a Multi-Section Panel.
2) Do the panels need to be mounted each next to the other or are there gaps between...
I have a transformer to bring the 3-phase voltage of 480VAC down to 400VAC (for feeding european equipment in the US). From the secondary side of the transformer i want to feed 25 3-phase loads (=75 poles)trough a circuit breaker panel. According to NEC408, i can handle only up to 42 poles (=14...
