Garmin GWX 70 Installation Manual - Page 26

Cabling & Wiring, 2.5 Cooling Requirements, GWX 70 Installation Manual, Rev. C

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2.4 Cabling & Wiring Refer to the interconnect examples in Appendix B for wire gauge guidance. For special installations that require the use of #18 or #20 AWG wire for power connections, the provided connector kit supplies extended barrel contacts for AWG #18 wire. If using #18 barrel contacts, ensure that no two contacts are mounted directly adjacent to each other. This minimizes the risk of contacts touching and shorting to adjacent pins and to ground. Use wire and cable meeting the applicable aviation regulation. When routing wire and cable, observe the following precautions: • Keep wire and cable as short and direct as possible • Avoid sharp bends • Avoid routing near power sources (e.g. 400 Hz generators, trim motors, etc) or near power for fluorescent lighting 2.5 Cooling Requirements The GWX 70 does not have provisions for attaching cooling air and does not generate an excessive amount of heat during typical operations, however thermal characteristics of the installation should always be assessed. An undesirable thermal condition could be created due to the unit's own internal power dissipation combined with restricted ventilation, or due to heat generated by adjacent equipment. Limiting thermal build up, by means of fan or natural convection is always good practice and recommended to increase the product life. 2.6 Mounting Requirements The GWX 70 mounting surface must be capable of providing structural support and electrical bond to the aircraft to minimize radiated EMI and provide protection from High-Intensity Radiation Fields (HIRF). GWX 70 Installation Manual Page 2-4 190-00829-01 Rev. C

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GWX 70 Installation Manual
190-00829-01
Page 2-4
Rev. C
2.4
Cabling & Wiring
Refer to the interconnect examples in Appendix B for wire gauge guidance.
For special installations that require the use of #18 or #20 AWG wire for power connections, the provided
connector kit supplies extended barrel contacts for AWG #18 wire. If using #18 barrel contacts, ensure that
no two contacts are mounted directly adjacent to each other. This minimizes the risk of contacts touching
and shorting to adjacent pins and to ground.
Use wire and cable meeting the applicable aviation regulation.
When routing wire and cable, observe the
following precautions:
•
Keep wire and cable as short and direct as possible
•
Avoid sharp bends
•
Avoid routing near power sources (e.g. 400 Hz generators, trim motors, etc) or near power for
fluorescent lighting
2.5
Cooling Requirements
The GWX 70 does not have provisions for attaching cooling air and does not generate an excessive amount
of heat during typical operations, however thermal characteristics of the installation should always be
assessed. An undesirable thermal condition could be created due to the unit’s own internal power
dissipation combined with restricted ventilation, or due to heat generated by adjacent equipment. Limiting
thermal build up, by means of fan or natural convection is always good practice and recommended to
increase the product life.
2.6
Mounting Requirements
The GWX 70 mounting surface must be capable of providing structural support and electrical bond to the
aircraft to minimize radiated EMI and provide protection from High-Intensity Radiation Fields (HIRF).