STEVETERRY
Well-Known Member
As of 2020, single-pole separable connectors have moved to NEC section 406.13, in recognition of the fact that these devices are also used in occupancies other than theatres and studiosNEC 520 and 525 permit single-pole separable connectors to connect portable switchboards if one of several conditions are met - keyed mating connectors to prevent line/neutral/ground misconnection, physical interlocks that force connection order, all the way down to posted warnings and instructions to the qualified personnel regarding connection/disconnection order.
The reason we see reversed gender neutral and ground (with respect to line gender) is it's the easiest, cheapest way to prevent connection to a Line and create a direct short at 400 amps...
CEE form connectors, up to 100 amps, meet the "normal" Code requirement of having Ground connect first/disconnect last, and all line connections connect/disconnect together.
ST