Question

When the reset button does not reestablish the control circuit after an over load, the probable cause is

A. The overload heater is too small
B. The overload trip had not cooled sufficiently
C. The auxiliary contacts are defected
D. The overload heater is burned out

Answer 1

The probable cause for the control circuit not being reestablished after an overload is that the overload heater is burned out.

Step-by-step explanation:

When the reset button does not reestablish the control circuit after an overload, the probable cause is that the overload heater is burned out (D). The overload heater is a protective device that is designed to open the control circuit when the current exceeds a safe limit. If the heater is burned out, it will not be able to effectively protect the circuit from overloads. This means that even if the reset button is pressed, the control circuit will not be reestablished.