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Electrical wiring question?
Im installing a luggage cart at the cottage through a motor driven cable and pulley system. I have two pushbutton controls at the top and bottom of the ramp. Its about a 175 ft run between them. Just wondering if anyone could tell me what size wire I need : 1. For the pushbutton stations and 2. To wire the motor. Its a 3/4 horsepower, cap start, 3 phase motor. I want to make sure before I try to run it.
You do not mention the operating voltage 230 or 460V....so will give information for both for 3phase.
The full load current of motor you will find on the motor nameplate.
3/4 HP FLA 2.8, 230V breaker 15 A , starter size 00, heater amps 4, wire 12AWG, conduit 3/4inch
3/4 HP FLA 1.4, 460V breaker 15 A , starter size 00, heater amps 3, wire 12AWG, conduit 3/4inch
For the push button 14 AWG or 2.5mm2 is rated at 25Amp will be ok for 175 ft.
You might want to use an instantaneous type breaker for faster trip action.Set at 13 times FLA
i.e Full load current is 3 Amps, found on nameplate, times by 13,= 39Amp, make inst.setting to closest down value available i.e. 35A.
Check also, thermal overload setting, heater amps for motor protection.
Proper grounding and insulation resistance tests are vital for safety before starting.If not a qualified electrician, you must have this this installation fully checked out.
This information can be found in National Electric Code book....hope this helps as a guide only!
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