Which type of branch circuit must supply central heating equipment?

The correct choice pertains to the fact that an individual branch circuit is specifically designed to supply power to a single load or device. In this context, central heating equipment often requires a dedicated source of power to ensure that it operates efficiently and reliably without interference from other electrical loads. Using an individual branch circuit helps protect the heating system from overloads and ensures that the circuit can handle the specific amperage and voltage requirements of the heating equipment.

Utilizing a dedicated branch circuit is essential for complying with electrical codes and standards that emphasize safety and reliability in the operation of central heating systems. The individual branch circuit provides a clear and uninterrupted path for electrical flow, essential for devices that require consistent performance, such as heating equipment.

In contrast, dedicated circuits are often misunderstood; while they sound similar, they can refer to circuits solely serving a specific piece of equipment, but they may not be exclusively individual circuits. Other types of circuits, such as multi-wire and split-phase circuits, may not provide the necessary conditions to safely and effectively power heating equipment. Multi-wire circuits can distribute power to multiple loads, and split-phase circuits usually provide power for standard residential appliances but aren't tailored for singular loads like heating systems.