thescooterguy
Member
electric trike build , and wiring , volts x amps =watts questions
I'm building and electric trike while i was stuck in the house due to snow storm . . i have a motor rated at 36 volts 12.5 amps 350 watts , pretty much have it all together . I'm down to hooking up the batteries , controller , and throttle . i haven't bought them yet because i'm not sure exactly what I'm doing , the basic controller I'm looking at for 36volts has 7 connectors , and its 40amps , the 36volt throttle has 4 wires , that leaves 3 more connections on the controller . one for battery in and one for out to motor , do i need to hook the last wire up from the controller to something for it to work . not sure what the last wire is for , i plan on running three 12 volt 12 amp batteries in series that's 36 volts but the amps confuse me the motor is rated at 12.5 amps the controller is rated at 40 amps , the fact that these # don't match worries me . and 350 watts doesn't make sense i thought that volts x amp = watts , the motor says 36 v 12.5 amps 350watts but 36 x 12.5 = 450 watts the motor says 350 . my batteries 36 volts x 12.0amps =432watts . will this harm anything . pictures of befor and after trike build older free spirit montgomery ward . i think
I'm building and electric trike while i was stuck in the house due to snow storm . . i have a motor rated at 36 volts 12.5 amps 350 watts , pretty much have it all together . I'm down to hooking up the batteries , controller , and throttle . i haven't bought them yet because i'm not sure exactly what I'm doing , the basic controller I'm looking at for 36volts has 7 connectors , and its 40amps , the 36volt throttle has 4 wires , that leaves 3 more connections on the controller . one for battery in and one for out to motor , do i need to hook the last wire up from the controller to something for it to work . not sure what the last wire is for , i plan on running three 12 volt 12 amp batteries in series that's 36 volts but the amps confuse me the motor is rated at 12.5 amps the controller is rated at 40 amps , the fact that these # don't match worries me . and 350 watts doesn't make sense i thought that volts x amp = watts , the motor says 36 v 12.5 amps 350watts but 36 x 12.5 = 450 watts the motor says 350 . my batteries 36 volts x 12.0amps =432watts . will this harm anything . pictures of befor and after trike build older free spirit montgomery ward . i think
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