I’m about to replace my qc1102 motor with an ecm16squ. My “hot” wires are not red or black connecting the existing motor. Mine are yellow and tan. I’m assuming that I can hook up either one to L1 vs L2 as long as I make sure the green ground wire is connected to the ground lug. Or do I need to trace them back and somehow identify the L1 and L2 sources?
If your current motor uses 220 - 240 voltage then you are correct as both colored wires are carrying 110 - 120 voltage. However, if only one wire is carrying voltage at 110 - 120 then you cannot use this motor unless you convert your breaker to a 220 - 240 volt one. Essentially using a voltage meter on the wires is recommended.
Great, thanks. They both are carrying 110 - 120 volts when I checked them previously. I will double check before I swap the motor out this weekend.
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You can connect either “hot” line to L1 or L2. You do not need to trace them back.