Final answer:
The minimum voltage rating of electrical equipment connected to a circuit should be above the circuit voltage to prevent damage or malfunction.
Step-by-step explanation:
The correct answer is c) Above the circuit voltage.
When connecting electrical equipment to a circuit, it is important to choose equipment with a minimum voltage rating that is above the circuit voltage. This ensures that the equipment can handle the voltage and prevents damage or malfunction.
For example, if the circuit voltage is 120 volts, it is recommended to use equipment with a voltage rating of 150 volts or higher. This provides a safety margin and ensures proper functioning of the equipment.