What is the maximum allowable voltage for low voltage systems according to NEC?

The maximum allowable voltage for low voltage systems according to the National Electrical Code (NEC) is 50 volts. This specification is crucial for determining the safety and requirements for low voltage applications, such as in communications, signaling, and other specialized equipment where electrical shock hazards must be minimized.

Low voltage systems, defined by the NEC, are typically those that operate at voltages ranging from 0 to 50 volts which ensures that they can be safely handled by individuals without extensive training. Operating within this range helps to mitigate risks associated with higher voltage systems, thus enhancing safety in installations and applications within this category.

While lower voltage levels like 25 or 30 volts could be considered for certain applications, they do not encompass the broader range established by the NEC, making 50 volts the definitive upper limit for low voltage systems.