Need refresher course in AC motor reversal

[SPIKER]

Pine ridge I had to do something similar prior and had to use a 4 pole 3 pos switch, not the two pole you showed.

that way the each wire for each dirrecction had it's own pole... 3 pos because other wise there was no STOP in between and these things can toss the windings pretty easy..

right now I'm so sleepy I can think only about 1/8th speed..

but basically red wire to 2 poles, and black wire to 2 poles when switched UP red wire on pole 1 connects to red terminal on motor and black wire on pole 3 connects to black terminal. when switched to center no connection between poles and terminals so motor is off. when switched DOWN the red wire on pole 2 connects to the black terminal and the black wire on pole 4 connects to the red terminal. there is low chance of messing this up if wired as stated, there with be red wires to 2 of the 4 poles and black wires to 2 the other 2 poles, then ther black terminal will be connected to 2 switched legs (one on top of pole 3 and one on bottom of pole 2) and the red terminal will be connected to 2 switched legs (one on top of pole 1 and one on bottom of pole 4 ).

as you see you will have empty legs but no empty poles on the switch...

mark M

 

[techman]

As I had indicated, it would be reversible if the nameplate shows it, which it does. As others have stated, only change the direction switch when the motor is stopped and not rotating.

paul

 

[thcri]

</font><font color="blue" class="small">( As I had indicated, it would be reversible if the nameplate shows it, which it does. As others have stated, only change the direction switch when the motor is stopped and not rotating.

paul
)</font>

For my dads boat lift I rigged up a reversing switch by using two spdt switches. Worked great but the drum switch is nicer. We did eventually move to them on all the boat lifts. As far as switching will still running, won't hurt anything, but the motor will keep running the same direction on a 115 volt system.

murph