Thanks in advance...
I replaced a 30 year old blower motor in a Rheem furnace recently. 1/2 HP Direct Drive with 7.5 x 370 capacitor.
Three wires run to the motor, one 115v from the fan limit to turn on low speed in heating mode. One 115v from the fan center to turn on high speed in cooling mode. The other is neutral.
One leg of the (original) capacitor was wired to a motor capacitor wire. The other leg was wired to the other motor capacitor wire and neutral. This neutral ran up into a junction box and was connected to the motor neutral and the furnace neutral.
I've never seen a capacitor with a neutral ran to it. I wired the new motor the same way. It ran, drew good amps.
Is this kosher, or should I run a constant 115v to the capacitor via a new wire? I don't see how the capacitor could do its duty this way.