reversing switch to an electric motor

Status
Not open for further replies.
D

djbasl

Member
I have a McGill 3pdt toggle switch that I am trying to wire as a reversing switch to a Dayton 115v split phase motor. Any help is appreciated.
 
Last edited:
Use the switch to reverse the relationship of leads 5&8, start windings, to that of the run. You will need an additional switch to supply power.

Power from On/Off switch & Run windings goes to center Poles.

5 & 8 to Top terminals, then criss cross with jumpers so bottom terminals are 8 & 5.


Try that & see if the smoke comes out. End of Post warranty.
 
I checked that link out, and I didn't see the layout I have in my pecker head. There is no "T" labeling on the spade posts. On the outside of my motor it gives a diagram for both clockwise, and counter clockwise rotations. For clockwise It shows: post 4-line 1 post 1-line 2, post 5-red post 2-black. For Counter clockwise it shows: post 4-line 1 post 1-line 2, post 5-black post 2-red. Obviously posts 2 and 5 are being swapped for rotational reasons. With the 3pdt toggle there are 9 terminations to be made on it, and I do not have a diagram.
 
Here's a better diagram. I should have called wire 2 and 5 black and red from the motor, but you get the idea. Those two tires need to be removed from posts 2 and 5 and brought to the switch as shown. One pole on the switch is supplying power to 4, the other two poles on the switch are doing the flipping of 2 and 5.

0dd8f592e95b709674811ba99133bce6.jpg
 
Last edited:
sparkyrick said:
Here's a better diagram. I should have called wire 2 and 5 black and red from the motor, but you get the idea. Those two tires need to be removed from posts 2 and 5 and brought to the switch as shown. One pole on the switch is supplying power to 4, the other two poles on the switch are doing the flipping of 2 and 5.

0dd8f592e95b709674811ba99133bce6.jpg
Click to expand...

Thank you Sparkyrick, I will try that diagram. It may take me a several day's to do it as I work and attend school. I will let you know when I am able to play with it. Thanks.
 
sparkyrick said:
Never mind. I posted for a drum switch. not a three position toggle switch.
Click to expand...
But the basic concept is the same, you need to reverse polarity of one of the motor windings whether you do it with the drum switch, relays/contactors, double throw switch(es), or manually re-configuring the leads.
 
djbasl said:
I checked that link out, and I didn't see the layout I have in my pecker head. There is no "T" labeling on the spade posts. On the outside of my motor it gives a diagram for both clockwise, and counter clockwise rotations. For clockwise It shows: post 4-line 1 post 1-line 2, post 5-red post 2-black. For Counter clockwise it shows: post 4-line 1 post 1-line 2, post 5-black post 2-red. Obviously posts 2 and 5 are being swapped for rotational reasons. With the 3pdt toggle there are 9 terminations to be made on it, and I do not have a diagram.
Click to expand...
Never mind. Had me thinking wire numbers, usually it is wire numbers 5 and 8 that need reversed or if colored only usually red and black - which is what you have described. You threw me off with reversing 2 and 5 but you were talking about the post numbers - it is actually red and black wires you are reversing here.
 
Status
Not open for further replies.
Top