Page 714 - 2018_IRC

GENERAL REQUIREMENTS

damaged parts that might adversely affect safe operation or age, enclosures or guards shall be so arranged and of such
mechanical strength of the equipment such as parts that are strength as to prevent such damage. [110.27(B)]
broken; bent; cut; deteriorated by corrosion, chemical action, E3404.11 Equipment identification.
or overheating. Foreign debris shall be removed from equip-
ment. [110.12(B)] 1. The manufacturer’s name, trademark or other descrip-
tive marking by which the organization responsible for
E3404.8 Mounting. Electrical equipment shall be firmly the product can be identified shall be placed on all elec-
secured to the surface on which it is mounted. Wooden plugs tric equipment. Other markings shall be provided that
driven into masonry, concrete, plaster, or similar materials indicate voltage, current, wattage or other ratings as
shall not be used. [110.13(A)] specified elsewhere in Chapters 34 through 43. The
E3404.9 Energized parts guarded against accidental con- marking shall have the durability to withstand the envi-
tact. Approved enclosures shall guard energized parts that are ronment involved. [110.21(A)(1)]
operating at 50 volts or more against accidental contact. 2. Reconditioned equipment shall be marked with the
[110.27(A)] names, or trademark, or other descriptive marking by
E3404.10 Prevent physical damage. In locations where which the organization responsible for reconditioning
electrical equipment is likely to be exposed to physical dam- the electrical equipment can be identified, along with
the date of the reconditioning. [110.21(A)(2)]

TABLE E3404.4 (Table 110.28)
ENCLOSURE SELECTION
FOR OUTDOOR USE
PROVIDES A DEGREE OF PROTECTION
AGAINST THE FOLLOWING ENVIRONMENTAL Enclosure-type number
CONDITIONS
3 3 R 3 S 3 X 3 R X 3 S X 4 4 X 6 6 P
Incidental contact with the enclosed equip- X X X X X X X X X X
ment
Rain, snow and sleet X X X X X X X X X X
Sleet a — — X — — X — — — —
Windblown dust X — X X — X X X X X
Hosedown — — — — — — X X X X
Corrosive agents — — — X X X — X — X
Temporary submersion — — — — — — — — X X
Prolonged submersion — — — — — — — — — X
FOR INDOOR USE
PROVIDES A DEGREE OF PROTECTION
AGAINST THE FOLLOWING ENVIRONMENTAL Enclosure-type number
CONDITIONS
1 2 4 4 X 5 6 6 P 1 2 1 2 K 1 3
Incidental contact with the enclosed equip- X X X X X X X X X X
ment
Falling dirt X X X X X X X X X X
Falling liquids and light splashing — X X X X X X X X X
Circulating dust, lint, fibers and flyings — — X X — X X X X X
Settling airborne dust, lint, fibers and flyings — — X X X X X X X X
Hosedown and splashing water — — X X — X X — — —
Oil and coolant seepage — — — — — — — X X X
Oil or coolant spraying and splashing — — — — — — — — — X
Corrosive agents — — — X — — X — — —
Temporary submersion — — — — — X X — — —
Prolonged submersion — — — — — — X — — —
a. Mechanism shall be operable when ice covered.
Note 1: The term rain tight is typically used in conjunction with Enclosure Types 3, 3S, 3SX, 3X, 4, 4X, 6 and 6P. The term rainproof is typically used in
conjunction with Enclosure Types 3R and 3RX. The term watertight is typically used in conjunction with Enclosure Types 4, 4X, 6 and 6P. The term
driptight is typically used in conjunction with Enclosure Types 2, 5, 12, 12K and 13. The term dusttight is typically used in conjunction with Enclosure
Types 3, 3S, 3SX, 3X, 5, 12, 12K and 13.
Note 2: Ingress protection (IP) ratings are found in ANSI/NEMA 60529, Degrees of Protection Provided by Enclosures. IP ratings are not a substitute for
enclosure-type ratings.

2018 INTERNATIONAL RESIDENTIAL CODE ® 689
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