Where we post answers to some of the more common questions we recieve from customers. Questions regarding industrial 3 phase extension leads, power boards, motor control ect.
Why would you have a 3-phase extension lead with a 4-pin plug and a 5-pin extension socket?
When using Australian Standard Industrial plugs and sockets you may notice that a 4-pin plug will fit into a 5-pin extension socket. With many machines only requiring 3 phases and earth to operate. (4 Pin Plugs) most users prefer the 4-pin extension leads as they are cheaper.
By having 5 pin extension sockets on the lead with a 4 pin plug this lead can be used there is a 4 or 5 pin wall socket outlet and when extra length is required the operator has the flexibility to use either a 4 pin or a 5-pin extension lead to obtain the extra length required.
Note both leads must be of the same current rating.