What is the requirement for equipment that weighs not more than 6 lb to be supported to any box?

The requirement that equipment weighing not more than 6 lbs must be "adequately secured" is essential for ensuring safety and reliability in electrical installations. This stipulation means that while lighter equipment doesn't require an extensive setup, it still must be fastened properly to prevent any dislodging or movement that could lead to damage or hazards, such as electrical shorts or physical injury.

It is vital to recognize that "adequately secured" implies using proper techniques or fasteners to hold the equipment in place. This can ensure that any minor vibrations or impacts do not cause the equipment to become loose. The NEC emphasizes safe electrical practices, hence the need for all fixtures to be secured appropriately, regardless of their weight.

Other options do not align with the specific safety requirements outlined by the NEC for securing equipment. For example, the notion of using just one screw may not provide sufficient stability and might not comply with other guidelines that require more robust fastening methods. The idea of having no maximum weight limit contradicts the NEC's focus on safety, as installation practices must consider various factors, including weight and support structures, to guarantee safe operation. Lastly, the enclosure requirement applies to certain types of equipment under specific conditions, rather than being a prerequisite for supporting lightweight apparatus like the one