A 24-volt control coil measures 0 volts while its controller is calling for operation. What should be verified next?
- AReplace the branch-circuit breaker with a larger one
- Trace the complete series control path
- CBypass every safety switch
- DIncrease the equipment grounding conductor size
Why B is correct
Zero volts at a commanded coil points to a loss in the control-power path or an open safety/control. Tracing the circuit safely identifies the open point; bypassing safeties or changing unrelated power components is improper.