MIL-HDBK-1003/6
Table 25
Standard Motor Control Enclosures
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*
*
NEMA Classifications
Comments
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* Type 1:
*
*
*
General purpose
A sheet metal case designed primarily
*
*
to protect against accidental contact
*
*
with the control mechanism.
*
* Type 1:
*
*
Gasketed
The general purpose enclosure with
*
*
gasketed door or cover.
* Type 2:
*
Similar to Type 1 with the addition of *
*
Drip tight
*
*
drip shields or the equivalent.
* Type 3:
*
*
Designed to provide protection against *
Weather-resistant
*
weather hazards such as rain and sleet. *
* Type 4:
*
*
*
Watertight
Designed to meet the hose test
*
described in NEMA Definition IC-1.2.6B. *
* Type 7:
*
*
*
Hazardous locations, Class 1,
*
*
Airbreak.
*
*
* Type 9:
*
*
*
Hazardous locations, Class 2,
*
Enclosures designed to meet application *
Groups F & G
*
*
requirements of the NEC for the
* Type 9-C
indicated specific classes of hazardous *
*
*
Hazardous Locations, Group 2
locations.
*
*
Group E.
*
*
*
* Type 12:
*
A sheet metal case designed with welded *
Industrial use
*
*
corners and no knockouts to meet the
*
Joint Industry Conference standards for *
*
*
use where it is desirable to exclude
*
dust, lint, fibers and filings, and oil *
*
*
or coolant seepage.
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10.14.3.4 Standard Motor Control Centers. The classes are designated by NEMA
Standard No. IC-l on the basis of function and further subdivided into types
on the basis of wiring type. Select the application control center
considering first, the class and the specific type within that class.
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