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| MILT81821
for bundling. Wiring or bonding which is not typical of the related end item shall be hidden from
the students' view, preferably behind the trainer panel, or concealed in an existing harness.
Sufficient slack shall be provided in all wiring to permit a minimum of three (3) receptacle
replacements.
Connectors shall be provided at all disassembly points on trainers requiring
disassembly for shipment.
All non-current-carrying conducting materials such as metallic
3.3.1.24.2 Grounding.
conduit, cable sheath or armor, enclosures, and switch boxes, which could short to potentials
greater than 30V, shall be electrically bonded and connected to a common ground buss, which shall
be connected to the grounding terminal of the power input receptacle.
The related end item junction boxes, terminal strips, buss
3.3.1.24.3 Accessibility.
terminals, quick disconnect plugs or breakers, etc., installed on the trainer panels shall be readily
accessible and limited to those required for maintenance or troubleshooting.
Where it has been determined that it will be necessary to
3.3.1.24.4 Component relocation.
relocate a radio, radar, or electrical system component from the stowage shelf for installation on the
bench top for instructional purposes, sufficient length of cable or patch cords shall be provided to
permit the units to be removed to the work area on the bench top without affecting their operation.
Space for stowage of the extra lengths of cable or patch cords shall be provided.
Wherever electrical wiring is routed through holes in
3.3.1.24.5 Insulation protection.
material less than one-eighth (1/8) inch in thickness, the holes shall be equipped with suitable
grommets for protection of insulation subject to abrasion. Paneling one-eighth (1/8) inch or more in
thickness shall have grommets or shall have the hole edges rounded to a radius equal to one-half
(1/2) the thickness of the material. Care shall be exercised in the support and routing of hookup
wiring to insure that it is not carried over or bent around any sharp corner or edge which could
damage the insulation, or routed near any sources of heat or substances which might cause
accelerated deterioration of the conductor insulation.
Terminal strips shall be made of suitable low moisture
3.3.1.24.6 Terminal
strips.
absorption arc-resistant material. Terminal spacing or barriers shall be employed to prevent
breakdown or low leakage resistance. Spacing between terminals or barriers shall permit use of
standard hand tools for maintenance. Exposed terminal strips shall be provided with protective
covers for personnel safety. These coverings shall be of plastic material and simple design.
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