Commercial mains wiring: 12ga wire for 30 amp load?
["Followup-To:" header set to sci.electronics.design.]
On 2005-11-11, Esther & Fester Bestertester wrote: Thus spake : You have 2 issues. Foiust, is the motor supposed to be running on 230 or 208? That couild be the extra current. If the motor is really exceeding the nameplate amps I would investigate futher. Nameplate: 230V, 16.5A. frequency? what mechanical load is it driving? I presume that if an autotransformer boosts the voltage 10%, it must draw 10%(?) more current in order to do so. Is this correct? (Nothing is free.) FBt yeah 10% more voltage out than in means 10% more current in than out (+ losses). -- Bye. Jasen |
Commercial mains wiring: 12ga wire for 30 amp load?
["Followup-To:" header set to sci.electronics.design.]
On 2005-11-13, Esther & Fester Bestertester wrote: Thus spake Jasen Betts: Nameplate: 230V, 16.5A. frequency? what mechanical load is it driving? 60hz. 4hp cap. start motor driving 2-stage compressor, light duty cycle (20-25%). Try a smaller pulley on the motor (or larger on the compressor) That'll increase the duty cycle but reduce the load on the motor (and thefore the current it draws) -- Bye. Jasen |
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