mestudentinva
Member
Hello, I'm working as an engineering intern at an industrial plant and we've been tasked to help spot potential NEC problems and bring them up to our managers - they are also doing their own audits but they just use us for an extra set of eyes and to keep us busy..
i think i found a couple but i can't seem to find anything in the NEC 70. There is a wire cable tray about 4" wide, 2" deep and 100' long - it carries 480Vac cables, 24 vdc cables and data cables (coaxial controlnet cables) all next to each other. the tray is coverred with a metallic lid and clips. the tray is located 4' off the finished floor running next to an industrual machine (i'm being vague on purpose).
it seems unsafe to me.. if you weren't careful or didn't know the tray well - you could vey easyily be playing with a 480 vac wire and not know it. My question is... are there any rules about mixing data and power cables? if not are there any rules of thumb about this? how about using the wireway itself - I assume it must be grounded - but other than that is it a legit way to carry these wires?
Thanks for your help.
i think i found a couple but i can't seem to find anything in the NEC 70. There is a wire cable tray about 4" wide, 2" deep and 100' long - it carries 480Vac cables, 24 vdc cables and data cables (coaxial controlnet cables) all next to each other. the tray is coverred with a metallic lid and clips. the tray is located 4' off the finished floor running next to an industrual machine (i'm being vague on purpose).
it seems unsafe to me.. if you weren't careful or didn't know the tray well - you could vey easyily be playing with a 480 vac wire and not know it. My question is... are there any rules about mixing data and power cables? if not are there any rules of thumb about this? how about using the wireway itself - I assume it must be grounded - but other than that is it a legit way to carry these wires?
Thanks for your help.
