Question

Where power limited conductors are installed in the same enclosures as power and lighting conductors, they must have a separation of at least ________?

1) 6 inches
2) 12 inches
3) 18 inches
4) 24 inches

Answer 1

According to the NEC, power-limited conductors need to be separated from power and lighting conductors by a specific distance, often 50 mm (2 inches), or must have suitable insulation when placed in the same enclosure.

Step-by-step explanation:

When power-limited conductors are installed in the same enclosures as power and lighting conductors, the National Electric Code (NEC) provides specific guidelines to ensure safety and prevent interference.

These requirements can be found in NEC Article 725, which covers Class 1, Class 2, and Class 3 remote-control, signaling, and power-limited circuits.

While the exact answer to this question depends on the type of circuit and insulation used, a common requirement is that there must be a barrier or partition between power-limited conductors and non-power-limited conductors unless the power-limited conductors are separated by at least 50 mm (2 inches) or they have suitable insulation to withstand the higher voltage.