On the E2 lighting plan, which Panelboard supplies the emergency lights?

The panelboard that supplies the emergency lights is key to ensuring that emergency lighting systems operate effectively during power outages or emergencies. In lighting plans, each panelboard is typically labeled to clarify its function and the specific circuits it supports.

The identification of B as the correct answer indicates that panelboard XX1 has been specified in the lighting plan as supplying power to the emergency lighting circuits. This designation would likely be based on the configuration of the electrical system, where it has been designated the role of managing specific emergency loads.

In practical terms, confirming that XX1 is the designated source for emergency lights would ensure that, in the event of a loss of normal power, the emergency lights would still have an operational power source to provide necessary illumination, thereby enhancing safety and compliance with electrical codes and regulations.