my 2 stage speedaire compressor blows breakers and fuses

by HAL PINTER
(LONG ISLAND NY)

after about six hours of use my compressor always blows the fuses. after ai changed the fuses it started blowing the breaker i have 3 30 amp time relay fuses whats do u think it might be

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Bill says...

Hal, I can only guess as it's hard to zero in a cause with not enough information.

Is it blowing the breaker when it tries to start, or is your air compressor running along building pressure when it blows the breaker before it cuts out on high pressure cut out?

If it's blowing on start up you might look to the pressure switch.

If the breaker is letting go while the compressor is running, it might be a run capacitor or the motor itself, maybe overheating?

Six hours is a long time to run for a compressor that's not 100% duty cycle, so if yours isn't that may be a clue.

Cheers,

Bill