350.30 Securing and Supporting. LFMC shall be securely
fastened in place and supported in accordance with 350.30(A)
and (B).
(A) Securely Fastened. LFMC shall be securely fastened in
place by an approved means within 300 mm (12 in.) of each
box, cabinet, conduit body, or other conduit termination and
shall be supported and secured at intervals not to exceed 1.4 m
(41∕2 ft). Where used, cable ties shall be listed and be identified
for securement and support.
Exception No. 1: Where LFMC is fished between access points through
concealed spaces in finished buildings or structures and supporting is
impractical.
Exception No. 2: Where flexibility is necessary after installation, lengths
from the last point where the raceway is securely fastened shall not
exceed the following:
(1) 900 mm (3 ft) for metric designators 16 through 35 (trade sizes
1∕2 through 11∕4)
(2) 1200 mm (4 ft) for metric designators 41 through 53 (trade sizes
11∕2 through 2)
(3) 1500 mm (5 ft) for metric designators 63 (trade size 21∕2) and
larger
Exception No. 3: Lengths not exceeding 1.8 m (6 ft) from a luminaire
terminal connection for tap conductors to luminaires, as permitted in
410.117(C).
Exception No. 4: Lengths not exceeding 1.8 m (6 ft) from the last point
where the raceway is securely fastened for connections within an accessible
ceiling to luminaire(s) or other equipment. For the purposes of
350.30, listed LFMC fittings shall be permitted as a means of securement
and support.
