Wiring/Cabling Considerations - Garmin G5 User Manual

Installation Manual
1.2.1.1 POWER SPECIFICATIONS
The G5 is capable of operating at either 14 or 28 VDC. Table 1-3 lists the supply
voltage and current draw information for the G5. Use this information when
determining power supply requirements. All installed electrical appliances must be
considered when determining total power requirements.
The specified current draw listed in Table 1-3 is measured with the display backlight
set to 100%.
14 V (Maximum)
3.4 W, 0.250 Amp

1.2.2 WIRING/CABLING CONSIDERATIONS

Section 1.5 lists the pin information for the G5 and Section 1.6 contains interconnect
drawings. It is recommended that all LRUs be installed prior to constructing the wiring
harnesses and cables.
Use MIL-W-22759/16 (or other approved wire) AWG #22 or larger wire for all
connections unless otherwise specified. The supplied standard pin contacts are
compatible with up to AWG #20 wire. In cases where some installations have more
than one LRU sharing a common circuit breaker, sizing and wire gauge is based on
aircraft circuit breaker layout, length of wiring, current draw on units, and internal unit
protection characteristics. Do not attempt to combine more than one unit on the same
circuit breaker.
RG400 or RG142 coaxial cable with 50 Ω nominal impedance and meeting
applicable aviation regulations should be used when installing an optional external
GPS antenna.
6
Table 1-3 G5 Power Requirements
14 V (Typical)
2.8 W, 0.200 Amp
Garmin G5 User's Manual
28 V (Maximum)
3.4 W, 0.125 Amp
28 V (Typical)
2.80 W, 0.100 Amp
190-02072-00 Rev. B