What is the minimum rating for a standard lampholder used for circuits and equipment operating at less than 50 volts?

The minimum rating for a standard lampholder used for circuits and equipment operating at less than 50 volts is 660 watts. This rating is established to ensure that the lampholder can safely accommodate the power requirements of commonly used lamps in low-voltage applications without overheating or risking damage.

Using a lampholder with insufficient wattage rating can lead to potential hazards such as fixture failure or even electrical fires. Therefore, the 660-watt rating serves as a robust standard, supporting most lighting applications while ensuring safety and reliability in low-voltage scenarios.