Which of the following equipment is allowed to be connected to the supply side of the service disconnecting means?

The correct choice highlights that equipment such as cable limiters or other current-limiting devices is permitted to be connected to the supply side of the service disconnecting means. This is critical because these types of devices play a significant role in protecting the electrical system by limiting the amount of current that can flow, thus preventing overcurrent conditions that can lead to equipment damage or electrical fires.

Connecting devices like cable limiters on the supply side allows for enhanced control and protection of the circuit as a whole before the power reaches the downstream equipment. These devices are designed to interact with the electrical supply in a way that ensures safety and compliance with the National Electrical Code (NEC) regulations, particularly in regard to service points and disconnecting means.

In contrast, items such as light fixtures, general-purpose outlets, and receptacles for residential use are typically connected on the load side of the service disconnecting means. The purpose of this configuration is to allow for safe disconnection of power to standard usage equipment without affecting the entire electrical system. Connecting these types of devices on the supply side would not only violate the NEC requirements but also create potential hazards, as they would expose less-protected devices to the full capacity of the electrical service before it has been adequately managed or controlled