A listed ___ shall be installed between a wind electric system and any loads served by the premises electrical system.

A listed ___ shall be installed between a wind electric system and any loads served by the premises electrical system.

• A. voltage monitoring system
• B. surge protective device
• C. thermal overload relay
• D. controller

Answer: (B)

A listed surge protective device is placed between the wind electric system and the loads to guard against transient overvoltages that can ride along from the wind turbine into the building’s electrical system. Surges come from lightning, switching events, or faults, and they can damage equipment or shorten insulation life. An SPD is specifically designed to clamp these spikes to safe levels, and being listed ensures it meets recognized safety and performance standards for use in electrical installations. It sits in the path to the loads so that any surge is limited before it can affect downstream devices. The other options don’t serve this protective role here: a voltage monitoring system measures voltage conditions but doesn’t in itself protect the circuit; a thermal overload relay protects motors from overheating due to overloads, not general surges; a controller handles operation logic, not transient protection.

A listed surge protective device is placed between the wind electric system and the loads to guard against transient overvoltages that can ride along from the wind turbine into the building’s electrical system. Surges come from lightning, switching events, or faults, and they can damage equipment or shorten insulation life. An SPD is specifically designed to clamp these spikes to safe levels, and being listed ensures it meets recognized safety and performance standards for use in electrical installations. It sits in the path to the loads so that any surge is limited before it can affect downstream devices.

The other options don’t serve this protective role here: a voltage monitoring system measures voltage conditions but doesn’t in itself protect the circuit; a thermal overload relay protects motors from overheating due to overloads, not general surges; a controller handles operation logic, not transient protection.