Member #415973

Member Since: March 5, 2013

Country: United States

  • I think your point only applies to low-voltage and high-voltage wires running together in the same enclosure or raceway without any splices. There, adequate insulation protects against accidental shorting between the conductors. But in a box with splices (like this), I believe the code requires a barrier between the high-voltage and low-voltage components. The risk here is if a high-voltage conductor comes loose and touches the exposed end of a low-voltage conductor – you will send high voltage out on the low voltage lines which could cause damage, fires or electric shock. There is a provision that allows high and low voltage if the high voltage is there only to provide power to the low voltage device, and maybe if the low voltage is there to control the high voltage (I still need to double-check that). In that case, the requirement is that no other high voltage wires be in the box, and the high and low voltage conductors need to be 6 mm apart. So this may just get by…

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