UFC 3 -520-01
June 10, 2002
8-2.3
Select enclosures for indoor applications in accordance with the conditions
specified in Tables 8 -3 and 8 -4 for non-hazardous and hazardous locations,
respectively. Refer to paragraph 8 -3 and NEC Article 500 (2002 Edition) for the
definition of various hazardous locations. Contact the equipment manufacturer for
assistance with hazardous environment applications.
Table 8-3. Indoor Nonhazardous Locations
NEMA Enclosure Type
1
2
4
4X
5
6
6P
11
12
13
Accidental Contact
x
x
x
x
x
x
x
x
x
x
Falling Dirt
x
x
x
x
x
x
x
x
x
x
Light Splashi ng
x
x
x
x
x
x
x
x
x
Dust and Fibers
x
x
x
x
x
x
x
Washdown with Water
x
x
x
x
Oil and Coolant
x
x
Seepage
Oil and Coolant
x
Spraying
Corrosive Agents
x
x
Occasional Submersion
x
x
Sustained Submersion
x
8-7
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