Electrician's Licensing Practice Exam

What type of wire is recommended for bonding multiple disconnects?

1. Any type of wire available

2. Aluminum wire only

3. Ground wire of sufficient size

4. Insulated copper wire exclusively

The correct answer is: Ground wire of sufficient size

The recommended type of wire for bonding multiple disconnects is a ground wire of sufficient size. This type of wire is specifically designed to establish a safe and effective electrical connection between grounding points, ensuring that any fault currents have a low-resistance path to ground. Proper bonding is crucial for maintaining electrical safety and compliance with the National Electrical Code (NEC). Using a ground wire that meets the required size specifications ensures that it can carry any potential fault current without overheating or breaking. The size of the ground wire must be determined based on factors such as the ampacity of the service and the overall system requirements. While other types of wire may be available, they may not provide the safety and reliability needed for bonding applications. Aluminum wire and insulated copper wire can each have specific applications, but using a dedicated ground wire ensures that bonding is done correctly and in compliance with code requirements. This is essential for the protection of both equipment and personnel from electrical faults.