Which statement about securing the anode to the tank is true?

• A. Wire is used to secure the anode to the tank
• B. Anode is secured with bolts directly to the tank
• C. Anode is secured with tape to the valve
• D. Anode is secured with a wire to saddle plates

Answer: (D)

Securing the anode to the tank is about providing a reliable electrical bond for cathodic protection. The anode must be electrically connected to the tank so that it can preferentially corrode, protecting the tank steel from rust. The proper method is to attach a bonding wire from the anode to the saddle plates—the welded supports along the tank—which create a solid, durable electrical path to the tank metal. This ensures the current flows where it’s needed and the protection remains effective. Using bolts directly into the tank isn’t the intended bonding path and can fail over time, and taping to the valve is not a durable or safe electrical connection. Connecting the anode via a wire to the saddle plates keeps the system properly bonded and protected.