Low voltage wiring

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  #1  
Old 05-20-14, 10:55 AM
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Low voltage wiring

Is it acceptable to route low voltage outdoor lighting wire alongside line voltage wires inside PVC conduit? The LV wires are 14 ga stranded and the line voltage wires are two, 14 ga THHN with a ground. The conduit is 3/4" and is about 4' long.
 
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Old 05-20-14, 11:11 AM
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Only if the voltage rating of the cable"s insulation equals or exceeds the voltage of the highest voltage conductor in the conduit. Rule of thumb: If it isn't rated for 250 volts you can't put it in the same conduit and it is unlikely it will be. However you could use THWN for the low voltage wires and that would be okay.
 
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Old 05-20-14, 11:11 AM
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You want to lay the low voltage wire next to the conduit that contains the high voltage.... that's fine.

Two ways of interpreting the question.
 
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Old 05-25-14, 10:08 AM
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Thanks for the answer. I couldn't find any identifying marks on the existing wire so we swapped it out with THHN. The run was only a few feet so it was cheap and easy. Besides, it's my son's deck and if I had told him it was OK (my deck I probably would have used the existing wire) and he got gigged by the building inspector I never would have heard the end of it.
 
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