cable drops tc-er

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jmbs

Member
Location
marion nc usa
I am wiring some 480v equipment in an industrial plant. I want to drop out of a j-box in the pipe rack 15' above the floor with tc-er cable unsupported to the equipment. I know I've done this out of cable tray. But, I don't see any thing in the code book to allow this? Equipment is serviced by qualified personnel. Thanks for any help
 

Dennis Alwon

Moderator
Staff member
Location
Chapel Hill, NC
Occupation
Retired Electrical Contractor
Here is your answer- I believe

336.10 (7) Between a cable tray and the utilization equipment or
device(s), provided all of the following apply:
a. The cable is Type TC-ER.
b. The cable is installed in industrial establishments
where the conditions of maintenance and supervision
ensure that only qualified persons service the
installation.
c. The cable is continuously supported and protected
against physical damage using mechanical protection
such as struts, angles, or channels.
d. The cable that complies with the crush and impact
requirements of Type MC cable and is identified with
the marking “TC–ER.”
e. The cable is secured at intervals not exceeding 1.8 m
(6 ft).

f. Equipment grounding for the utilization equipment
is provided by an equipment grounding conductor
within the cable. In cables containing conductors
sized 6 AWG or smaller, the equipment grounding
conductor must be provided within the cable or, at
the time of installation, one or more insulated
conductors must be permanently identified as an
equipment grounding conductor in accordance with
250.119(B).
 
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