communications raceways and listed plenum communications raceways shall be permitted to be installed in vertical riser runs in a shaft from floor to floor. Only Type CMR and CMP cables shall be permitted to be installed in these raceways.

(2) Metal Raceways or Fireproof Shafts. Listed communications cables shall be encased in a metal raceway or located in a fireproof shaft having firestops at each floor.

(3) One- and Two-Family Dwellings. Type CM and CMX cable shall be permitted in one- and two-family dwellings.

FPN: See 800.26 for firestop requirements for floor penetrations.

(C) Other Wiring Within Buildings. Cables installed in building locations other than the locations covered in

800.154(A), (B), (D), and (G) shall be in accordance with

800.154(C)(1) through (C)(6).

(1) General. Cables shall be Type CMG or Type CM. Listed communications general-purpose raceways, listed riser communications raceways, and listed plenum communications raceways shall be permitted. Only Types CMG, CM, CMR, or CMP cables shall be permitted to be installed in these communications raceways.

(2) In Raceways. Listed communications wires that are enclosed in a raceway of a type included in Chapter 3 shall be permitted.

(3) Nonconcealed Spaces. Type CMX communications cable shall be permitted to be installed in nonconcealed spaces where the exposed length of cable does not exceed

3 m (10 ft).

(4) One- and Two-Family Dwellings. Type CMX com- munications cable less than 6 mm (0.25 in.) in diameter shall be permitted to be installed in one- and two-family dwellings.

(5) Multifamily Dwellings. Type CMX communications cable less than 6 mm (0.25 in.) in diameter shall be permitted to be installed in nonconcealed spaces in multifamily dwellings.

(6) Under Carpets. Type CMUC undercarpet communications wires and cables shall be permitted to be installed under carpet.

(D) Cable Trays. Types CMP, CMR, CMG, and CM com munications cables shall be permitted to be installed in cable trays. Communications raceways, as described in
800.182, shall be permitted to be installed in cable
trays.
(E) Cable Substitutions. The uses and substitutions for communications cables listed in Table 800.154(E) and il lustrated in Figure 800.154(E) shall be permitted.
FPN: For information on Types CMP, CMR, CMG, CM, and CMX cables, see 800.179.
(F) Hybrid Power and Communications Cable. Hybrid power and communications cable listed in accordance with 800.179(H) shall be permitted to be installed in one- and two-family dwellings.
(G) Distributing Frames and Cross-Connect Arrays.
Listed communications wire and Types CMP, CMR, CMG,
and CM communications cables shall be used in
distributing frames and cross-connect arrays.

800.156 Dwelling Unit Communications Outlet. For new construction, a minimum of one communications outlet shall be installed within the dwelling and cabled to the service provider demarcation point.

VI. Listing Requirements

800.170 Equipment. Communications equipment shall be listed as being suitable for electrical connection to a telecommunications network.

FPN: One way to determine applicable requirements is to refer to UL 60950-1-2003, Standard for Safety of Information Technology Equipment; UL 1459-1995, Standard for Safety, Telephone Equipment; or UL 1863-2004, Standard
Table 800.154(E) Cable Substitutions
Cable Permitted
Type Use References Substitutions
CMR Communications 800.154(B) CMP
riser