![]() ![]() However, a noninsulated splice connector may be used, provided the splice is covered with dual-wall shrink sleeving of a suitable material. Environmentally sealed splices that conform to MIL-T-7928 provide a reliable means of splicing in SWAMP areas. Use of a self-insulated splice connector is preferred however, a non-insulated splice connector may be used provided the splice is covered with plastic sleeving that is secured at both ends. Many types of aircraft splice connector are available for use when splicing individual wires. Splicing of individual wires in a group or bundle should have engineering approval, and the splice(s) should be located to allow periodic inspection. Splicing of electrical wire should be kept to a minimum and avoided entirely in locations subject to extreme vibrations. Splicing of power wires, coaxial cables, multiplex bus, and large-gauge wire must have approved data. Spliced Connections In Wire BundlesSplicing is permitted on wiring as long as it does not affect the reliability and the electromechanical characteristics of the wiring. Sufficient slack should be provided at each end to permit replacement of terminals and ease of maintenance prevent mechanical strain on the wires, cables, junctions, and supports permit free movement of shock- and vibration-mounted equipment and allow shifting of equipment, as necessary, to perform alignment, servicing, tuning, removal of dust covers, and changing of internal components while installed in aircraft. This measurement may be exceeded if there is no possibility of the wire group or bundle touching a surface that may cause abrasion. Normally, wire groups or bundles should not exceed 1⁄2 inch deflection between support points. This slack should be in addition to the drip loop and the allowance for movable equipment. Wiring at terminal lugs or connectors should have sufficient slack to allow two reterminations without replacement of wires. Wires connected to movable or shock-mounted equipment should have sufficient length to allow full travel without tension on the bundle. Slack in Wire BundlesWiring should be installed with sufficient slack so that bundles and individual wires are not under tension.
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