pbekkerh wrote:I'm actually just looking for the voltage levels

It's not the voltage levels burning out the PGM, it's the current draw when the motor strains agains carbon build up. Unlike an AC motor, a DC motor will draw huge currents when it cannot respond to the applied voltage. That's why they use them in trains.

Just fit a circuit breaker in line, and mount it somewhere you can see it.

Better still, just keep the power valve clear of carbon...
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