[BC] Electrical Code

[PeterH5322@aol.com]

>This code issue could be circumvented if the fusible disconnect for the low 
>current single phase load were made part of the equipment itself.  Perhaps 
>a small Eaton-Heinemann/Airpax/ABB/etc. panel or DIN rail mount breaker 
>could do the trick.

A very popular model of machine tool, made in Europe, has five wires at 
its input terminal block: three for A, B and C, which may be 208-240 or 
480 three-phase, as ordered, and two which must be 240 single-phase.

The main disconnect for this machine opens all five wires.

I believe this main disconnect supports lockout/tagout. If it doesn't, a 
number of aftermarket devices may be used to facilitate installation of 
any number of locks and/or tags.

Clearly, this machine requires two branch circuits, which the customer is 
expected to provide.

However, machine and operator safety is assured as the first device 
internal to the machine after the input terminal block is a five-pole 
disconnect which simultaneously opens both branch circuits.