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Joined: Oct 2000
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GreggT;

Take a look at the Schematics at the following Page of the Tech. Reference Area:

PSC Motors - Schematics
(click on underlined text to open page in new window/tab)

Refer to the Drawings in Figures 2.1 and 2.2

Even though these Drawings depict a PSC Motor, your Resistance Start Motor will apply as well - just replace the Capacitor with the Start Switch.

These Two Schematics denote how your Motor should be connected for either Counter-Clockwise (Forward), or Clockwise (Reverse) Rotation.

Swapping Auxiliary Winding Leads is accomplished via the 2 Pole 2 Throw Switch (interlocked contacts), and the input AC is controlled via the 1 Pole 1 Throw Switch (Opens/Closes the Ungrounded Conductor only).

To perform Forward / Off / Reverse via a Single Toggle Switch, a 3 Pole 3 Throw toggle Switch is necessary.
Optionally, a 3 Pole 2 Throw Toggle Switch with center open position, may be used.

The Motor may be controlled as shown in the Schematics - with 2 Separate Switches, or you may opt for a more elaborate control means - by using Control Relays and Contactors; as shown in Figure 3.1, etc.
BTW, The Control may be accomplished with (2) Contactors, (1) Stop Switch, and (2) Start Switches - One per "Direction" .

Please review these items and respond back with comments / questions / etc.

-- Scott (EE)

Last edited by Scott35; 10/25/12 05:09 AM. Reason: spelling air-ors!

Scott " 35 " Thompson
Just Say NO To Green Eggs And Ham!
Joined: Oct 2012
Posts: 6
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GreggT Offline OP
New Member
funny, we're thinking alike - I was already considering a 3pdt switch w/ center off or a 4-pole switch so both L1 & L2 could be electrically off. I'd prefer to use a single switch solution rather than 2 switches. I think the 3pdt switch will suffice as long as I use the 3rd pole for the black AC wire. Thanks Scott35!

Last edited by GreggT; 10/26/12 09:56 PM.
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