motor wiring

martin electric
on 21 Mar 13 (19:59)

the motor was disconnected and not taged. I have to wire marked A and two marked F. Does it matter which A/F wires are spliced to my feed?

Marshall Henderson
on 21 Mar 13 (21:44)

Need more info to give a decent answer.
Can you provide data on the following?
1. Power supply, AC or DC, voltage, 1 or 3 phase?
2. Any controls, ie; variable speed controller, magnetic starter, direction switch(unlikely), etc.
3. Data plate on motor, Make, model,type, voltage, frame size, etc.

My first gut feeling is that the motor is an older DC model. Wiring on DC motors can be tricky if you don’t have all the info readily available. If it is AC then the possible combinations are reduced both in number and complexity.

I will help out as much as possible.

Marshall

monotype mick
on 22 Mar 13 (10:28)

As Marshall rightly says need much more available info to give an accurate resume, but bearing in mind the following, is based on a little know how in U.K. if your motor is single phase (usually) there is a small plate on the junction box, where your wires would go in for connection, on the underside of the plate the legend, is illustrated to enable the appropriate wires, to go on to their respective terminals to “A” supply the motor with the correct live and neutral wires, and “B” to facilitate the correct rotation via straps usually marked as A1, A2,> B1 B2 specifiying which order etc, for clock or anti clock, whichever!!! BUT also according to which design the motor is constructed to, there can be internal terminal blocks marked “A” for the armature (winding) and “B” for the field (coil-s). This is a generalization roughly based on U.K. systems which possibly may help you, to impart more constructive details to Marshall, I am sure with the right info He will nail it P.D.Q. Good Luck Mick.