[Code of Federal Regulations]
[Title 49, Volume 4]
[Revised as of October 1, 2002]
From the U.S. Government Printing Office via GPO Access
[CITE: 49CFR393.28]

[Page 1061-1062]
 
                        TITLE 49--TRANSPORTATION
 
        CHAPTER III--FEDERAL MOTOR CARRIER SAFETY ADMINISTRATION,
                      DEPARTMENT OF TRANSPORTATION
 
PART 393--PARTS AND ACCESSORIES NECESSARY FOR SAFE OPERATION--Table of Contents
 
    Subpart B--Lighting Devices, Reflectors, and Electrical Equipment
 
Sec. 393.28  Wiring to be protected.

    (a) The wiring shall--
    (1) Be so installed that connections are protected from weather, 
abrasion, road splash, grease, oil, fuel and chafing;
    (2) Be grouped together, when possible, and protected by 
nonconductive tape, braid, or other covering capable of withstanding 
severe abrasion or

[[Page 1062]]

shall be protected by being enclosed in a sheath or tube;
    (3) Be properly supported in a manner to prevent chafing;
    (4) Not be so located as to be likely to be charred, overheated, or 
enmeshed in moving parts;
    (5) Not have terminals or splices located above the fuel tank except 
for the fuel sender wiring and terminal; and
    (6) Be protected when passing through holes in metal by a grommet, 
or other means, or the wiring shall be encased in a protective covering.
    (b) The complete wiring system including lamps, junction boxes, 
receptacle boxes, conduit and fittings must be weather resistant.
    (c) Harness connections shall be accomplished by a mechanical means.

[53 FR 49397, Dec. 7, 1988]