Hi. I'm using a commercial triac speed controller to control a universal motor that pulls considerable amperage (where "considerable" is no more than 15 amps at 117 volts). I would like to modify the controller so that it will cut all current to the motor, via a relatively small low current micro switch and associated wiring. However, I'm unsure how much current actually flows on the "control" side of the unit (e.g., in series with the control potentiometer) and can not easily measure it without complete preemptive disassembly. Is there any rule of thumb for how much current is actually flowing on that side of the circuit, as opposed to the "hot" side of the triac that is in series with the output load (in this case, the motor)? Thanks!