in the blank space.

(E) Location. The point of entrance of a power-supply assembly shall be located within 4.5 m (15 ft) of the rear, on the left (road) side or at the rear, left of the longitudinal center of the vehicle, within 450 mm (18 in.) of the outside wall.

50-A, 125/250-V, 3-pole, 4-wire, grounding type

Figure 551.46(C) Configurations for Grounding-Type Receptacles and Attachment Plug Caps Used for Recreational Vehicle Supply Cords and Recreational Vehicle Lots.

125 volts, conforming to the configuration shown in Figure

551.46(C).

FPN: Complete details of this configuration can be found in ANSI/NEMA WD 6-2002, National Electrical Manufacturers Association's Standard for Dimensions of Attachment Plugs and Receptacles, Figure 5.20.

Exception No. 1: A recreational vehicle equipped with only a listed flexible drain system or a side-vent drain system shall be permitted to have the electrical point of entrance located on either side, provided the drain(s)for the plumbing system is (are) located on the same side. Exception No. 2: A recreational vehicle shall be permitted to have the electrical point of entrance located more than 4.5 m (15 ft) from the rear. Where this occurs, the distance beyond the 4.5-m (15-ft) dim nsion shall be added to the cord's minimum length as specified in 551.46(B). Exception No. 3: Recreational vehicles designed for transporting livestock shall be permitted to have the electrical point of entrance located on either side or the front.

(3) Units with Two to Five 15- or

Circuits. Recreational vehicles wired

551.42(C) shall have an attachment

2-pole, 3-wire grounding type, rated 30 conforming to the configuration shown

20-Ampere Branch in accordance with plug that shall be amperes, 125 volts,

in Figure 551.46(C),

551.47 Wiring Methods.

(A) Wiring Systems. Cables and raceways installed in accordance with Articles 320, 322, 330 through 340, 342 through 362, 386, and 388 shall be permitted in accordance with their applicable

intended for use with units rated at 30 amperes, 125 volts.

article, except as otherwise specified in this article. An equipment

grounding means shall be provided in accordance with 250.118.

FPN: Complete details of this configuration can be found in

ANSI/NEMA WD 6-2002, National Electrical Manufacturers

(B) Conduit and Tubing.

Where rigid metal conduit or

Association's Standard for Dimensions of Attachment Plugs and Receptacles, Figure TT.

(4) Units with 50-Ampere Power-Supply Assembly. Rec reational vehicles having a power-supply assembly rated 50

intermediate metal conduit is terminated at an enclosure with a

locknut and bushing connecti n, two locknuts shall be provided, one inside and one outside of the enclosure. All cut ends of conduit and tubing shall be reamed or otherwise finished to remove rough edges.

amperes as permitted by 551.42(D)

shall have a 3-pole,

(C) Nonmetallic Boxes. Nonmetallic boxes shall be acceptable

4-wire grounding-type attachment plug

rated 50 amperes,

only with nonmetallic-sheathed cable or nonmetallic raceways.

125/250 volts, conforming to the configuration shown in

Figure 551.46(C).

FPN: Complete details of this configuration can be found in ANSI/NEMA WD 6-2002, National Electrical Manufacturers Association's Standard for Dimensions of Attachment Plugs and Receptacles, Figure 14.50.

(D) Labeling at Electrical Entrance. Each recreational