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 shall not exceed the following:

(1) 900 mm (3 ft) for metric designators 16 through 35 (trade sizes Vi through l'A)

(2) 1200 mm (4 ft) for metric designators 41 through 53 (trade sizes V/2 through 2)

(3) 1500 mm (5 ft) for metric designators 63 (trade size

2V2) and larger

Exception No. 3: Lengths not exceeding 1.8 m (6 ft) from a luminaire terminal connection for tap conductors to lumi-naires, 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.

(B) Supports. Horizontal runs of LFMC supported by openings through framing members at intervals not greater

than 1.4 m (4'/2 ft) and securely fastened within 300
mm
(12 in.) of termination points shall be permitted.

350.42 Couplings and Connectors. Angle connectors shall not be used for concealed raceway installations.

350.56 Splices and Taps. Splices and taps shall be made in accordance with 300.15.

350.60 Grounding and Bonding. Where used to connect equipment where flexibility is required after installation, an equipment grounding conductor shall be installed.

Where flexibility is not required after installation, LFMC shall be permitted to be used as an equipment grounding conductor when installed in accordance with
250.118(6).
Where required or installed, equipment grounding conductors shall be installed in accordance with
250.134(B).
Where required or installed, equipment bonding jumpers shall be installed in accordance with 250.102.
FPN: See 501.30(B), 502.30(B), 503.30(B), 505.25(B), and 506.25(B) for types of equipment grounding conductors.

HI. Construction Specifications

350.120 Marking. LFMC shall be marked according to

110.21. The trade size and other information required
by the listing shall also be marked on the conduit.
Conduit suitable for direct burial shall be so marked.