MIL-DTL-22992G
6. NOTES
(This section contains information of a general or explanatory nature that may be helpful, but is not
mandatory.)
6.1 Intended use. The various types and classes of connectors are intended for use as follows:
a.
Class C connectors are intended for external interconnection use on vans, shelters, trailers,
buildings and heavy duty (rough service) applications. They are not for primary power
distribution.
b.
Class J connectors are intended for use only where class C connectors can be used but
where a wire support grommet is necessary.
c.
Class L connectors are intended for power connections in the current range from 40 to 200
amperes where heavy duty, waterproof and arc quenching ability are required and are to be
used only with heavy-duty jacketed cables specified on the applicable insert standard.
d.
Class R connectors are intended for use as general purpose heavy-duty connectors where
pressurization and arc quenching ability are not required. The connectors can be made
weatherproof when the accessory sealing adapter is attached. They are not for primary power
distribution.
6.1.1 Use of alternate insert positions. When connectors of the same size and arrangement are
installed sufficiently adjacent to one another to provide a danger of mating plug with the wrong receptacle,
it as intended that alternate insert positions should be employed. Alternate insert positions are also used
in the class L connectors to differentiate between the various power frequencies being used.
6.1.2 Wire sizes to be used with contacts. It is intended that the wire attached to each connector
contact should be of the AWG size (or smaller diameter), corresponding to the contact size number. For
example, it is intended that an AWG size 12 wire be soldered to at least a size 12 contact; and an AWG
size 6 wire should be soldered or crimped if applicable to a size 4 or size 6 contact. SAE-AS33481
contact bushings should be used with class L contacts if the wire AWG is smaller than the wire barrel
size.
6.2 Acquisition requirements. Procurement documents should specify the following:
a.
Title, number, and date of this specification.
b.
Applicable MS PIN.
c.
Packaging requirements (see 5.1).
6.3.1 Arc quench type connector (class L). This type of connector is designed as a circuit breaking
connector with special provisions to minimize damage to cable or connector and reduce the hazard to
personnel during circuit rupture under the worst field conditions of high humidity and standing in mud or
water. Specifically, any arc drawn while mating or unmating connectors under maximum electrical load
will be extinguished before the pin contact leaves the socket contact insert chamber.
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