I am trying to place both germicidal lamps (approx 70 watts total) and a negative ion generator in my air condition return space where the blower motor is.
My fist advice was to run these two devices off one 120 volt plug where each of these devices could be plugged into. This was a perfect idea, I thought, because the HVAC relay that controls the blower motor could also switch these 2 devices on when the blower was blowing. I found later that the motor is running on 240 volt with a red wire (not connected) for a low speed on the motor.
Is there anyway to convert the plug that I accidentally wired with 240 volts to 120v or run a 120 volt plug from the 240 volt plug. I can't figure out how to get a neutral from the 240 volt plug. I could still use this 240 volt plug for my ozone generator which requires 240 volts.
Would it maybe be best to run a whole new 120 volt plug circuit and use a 24v/120v relay from the thermostat wire to turn this box on and off with the blower motor?