368.56 Branches from Busways. Branches from busways
shall be permitted to be made in accordance with
368.56(A), (B), and (C).
(B) Cord and Cable Assemblies. Suitable cord and cable
assemblies approved for extra-hard usage or hard usage and
listed bus drop cable shall be permitted as branches from
busways for the connection of portable equipment or the
connection of stationary equipment to facilitate their interchange
in accordance with 400.7 and 400.8 and the following
conditions:
(1) The cord or cable shall be attached to the building by
an approved means.
(2) The length of the cord or cable from a busway plug-in
device to a suitable tension take-up support device shall
not exceed 1.8 m (6 ft).
(3) The cord and cable shall be installed as a vertical riser
from the tension take-up support device to the equipment
served.
(4) Strain relief cable grips shall be provided for the cord
or cable at the busway plug-in device and equipment
terminations.
Exception to (B)(2): In industrial establishments only,
where the conditions of maintenance and supervision ensure
that only qualified persons service the installation,
lengths exceeding 1.8 m (6 ft) shall be permitted between
the busway plug-in device and the tension take-up support
device where the cord or cable is supported at intervals not
exceeding 2.5 m (8 ft).