StacksVerified U.S. regulatory reference

46 CFR §35.30-30

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
Portable electric equipment must not be used in a hazardous location described in subpart 111.105 of this chapter except:
  1. (a)Self-contained, battery-fed, explosion-proof lamps approved by Underwriters Laboratories Inc., Factory Mutual Research Corporation, or other independent laboratory recognized by the Commandant, for use in a Class I, Division 1 location for the electrical group classification of the cargo;
  2. (b)Intrinsically safe equipment approved by Underwriters Laboratories Inc., Factory Mutual Research Corporation, or other independent laboratory recognized by the Commandant, for use in a Class I, Division 1 location for the electrical group classification of the cargo; and
  3. (c)Any electrical equipment, if:
    1. (1)The hazardous location is:
      1. (i)Enclosed; and
      2. (ii)Gas free;
    2. (2)The adjacent compartments are:
      1. (i)Gas free;
      2. (ii)Inerted;
      3. (iii)Filled with water;
      4. (iv)Filled with Grade E liquid; or
      5. (v)Spaces where flammable gases are not expected to accumulate; and:
    3. (3)Each compartment where flammable gas is expected to accumulate is:
      1. (i)Closed; and
      2. (ii)Secured.