Electrical Repair Questions? Ask an Electrician for Answers ASAP
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How do you plan to control the motor?
480 volts 3phase
Sorry, my fault for not being clearer....I mean how do you plan to turn it on and off, and control the speed?
state and stop button on control box, I am just replacing a old motorthat has no p1 or p2 leads and control box is like 30 feet away from
motor and this motor is not new
Put a meter across P1 and P2 (measuring ohms). Is it open or closed?
it is closed.
Ok, so ideally, what you need to do is wire P1 and P2 into your control circuit so that if it becomes 'open' by the action of the thermostat inside the motor, it will shut down the motor.
Like this: http://screencast.com/t/a0dbzrBxOlMa
Leaving them capped off will not prevent you from running the motor but you will have no thermal protection. If this is not an issue for you, cap them off and ignore them. My advice would be to include the thermal switch in your circuit.
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Would it be the same as the old motor was no p1 and p2
How many leads come from your new motor? How many leads came from your old motor?
Is everything EXACTLY the same except for the P1 and P2? If so, just hook the motor up as before.