Wross
New member
- Location
- Indianapolis, Indiana USA
I am new to the forum. My company has recently began to provide high volt support for commercial EMS installations. Upon inspection of a recent install in which my Team installed 2 lighting control panels, I noticed 2 of the conduits were very warm. I immediately inspected the pipes for wire volume. They are 3/4 pipes with 16 THHN #12 conductors in each. I pulled 2 circuits out of each pipe and saw a reduction in temperature. My concern is that they are still warm. Each pipe now has 12 conductors. The panel is a 120/208 and all circuits in the panel are 20 amp lighting circuits. The pathways serve as a loop to bring the line to the LCP panel contactors and then back to the panel to splice into the load in a pull box next to the panel. There are no neutrals or grounds in the pipes - only line and return (sharing same pipes). There are no signs of a fault. Any ideas as to why we still have hot pipes? Thanks in advance for your input.