When you get the call, “The motor won’t start,” you’d best have a logical and systematic plan in place to approach the problem. “Easter egging” just doesn’t work unless you happen to be very lucky!
A. The NEC defines a “controller” as any switch or device used to start and stop a motor by making and breaking the motor circuit current [Sec. 430.2 Definitions]. A controller can be a ...
Beyond the wheel, the most important mechanical equipment serving humanity is the centrifugal pump. Centrifugal pumps make modern quality of life possible. Turn on a faucet and a centrifugal turbine ...
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