Historical textIn force on Sept. 30, 1998Source: annual CFR editions 1996–2004

§ 393.28 Wiring to be protected.

Wording first on file in the 1996 annual edition, superseded by the 2005 annual edition.

govinfo, 1996 edition ↗

Compare with

Before Jan. 1, 2017 the record is one snapshot per annual CFR edition, revised as of October 1. This is the 1996 edition's wording. An amendment that took effect between Oct. 1, 1997 and Sept. 30, 1998 would not appear until the next edition, so check the citations below and the Federal Register for exact effective dates. govinfo does not publish the 1997 edition of Parts 300–399 in machine-readable form, so the 1996 text is shown for that year.

49 CFR § 393.28 — Wiring to be protected.. Text in force on September 30, 1998. This wording effective October 1, 1996 to October 1, 2005. Source: govinfo, 1996 edition, https://www.govinfo.gov/app/details/CFR-1996-title49-vol4/CFR-1996-title49-vol4-sec393-28. Retrieved from FMCSR.com, https://fmcsr.com/reg/393.28?asof=1998-09-30, on October 26, 2026. Unofficial compilation; verify against the official source.

(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 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.

[53 FR 49397, Dec. 7, 1988]

Amendment history

2 distinct wordings on file since Oct. 1, 1996

Oct. 1, 2005 → presentannual editions 2005–2016diff vs. previous
[70 FR 48047, Aug. 15, 2005]
Oct. 1, 1996 → Oct. 1, 2005annual editions 1996–2004viewing
[53 FR 49397, Dec. 7, 1988]

A new entry appears whenever the regulatory words change between government snapshots. Day-precise from the eCFR (2017 onward); before that, one snapshot per annual CFR edition (revised as of October 1). Bracketed citations are the Federal Register history printed with the section.