When parallel conductors are installed in cable tray [using 1/C tray rated cables triplexed] is a ground required for each set or one for the entire circuit of parallel conductors? I was on a job site today in looking at an installation that had a 2-1600A feeders with parallel aluminum feeders each set consisted of 3-1/C tray rated cables, however there was only a single 350kCMIL ground for the entire circuit not one for each "parallel set". I have been looking thru my code book, and cannot determine if this would have been acceptable for the installation. Is it code compliant to install a single equipment ground conductor when using 1/C tri-plexed cables in cable tray for a parallel run?
Cable Tray Parallel Feeder Ground Conductor
- Thread starter Mike01
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eric9822
Senior Member
- Location
- Camarillo, CA
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- Electrical and Instrumentation Tech
Take a look at 250.122(F) assuming you are on the 2011.
Yes. In addition to 250.122(F), look at 250.122(C)...
- Location
- Illinois
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- retired electrician
The code permits a single EGC in the tray no matter how many sets of single conductors are used. If an actual cable assembly is used a full sized EGC is required in each cable assembly.
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