I have been contemplating getting 3 phase power to my shed, and while thumbing through the clipsal catalogs for socket outlets, notice you can get 4 or 5 pins (and even more).
Now, I always thought there would be 5 wires in a three phase cable ie. 3 actives, 1 neutral & 1 earth, hence a 5 pin outlet would make sense.
What then is a 4 pin outlet for, and what is the combination of wires in the cable?
In general, what is the common cable & plug/sockets used for 3 phase shed wiring circuits. Is it a cable consisting of 3 actives, 1 neutral & 1 earth, and a 5 pin outlet - this is what makes sense to me.