Gi 275 Installation Requirements; Table 3-8 Power Distribution; Power Distribution - Garmin GI 275 Installation Manual

3.2 GI 275 Installation Requirements

This section provides installation requirements for the GI 275 system.
3.2.1

Power Distribution

GI 275 LRUs cannot share circuit breakers or ground return wires with each other or with other equipment.
For the purpose of the GI 275 system installation, the "essential bus" is a bus that receives power when the
battery master is switched on and is not automatically shed with the loss of a generator or alternator. Power
distribution requirements are summarized in Table 3-8.
LRU
MFD
EIS Display
GEA 24
GSB 15
190-02246-14
Rev. 11

Table 3-8 Power Distribution

• Avionics bus
• No. 1 EIS display on essential bus
• No. 2 EIS display on essential bus
• If dual essential buses are available, connect each EIS display to a separate
essential bus
• No. 1 GEA 24 on essential bus
• No. 2 GEA 24 on essential bus
• If dual essential buses are available, connect each GEA 24 to a separate
essential bus
• If connected to a GI 275, connect GSB 15 to same bus as GI 275
• If not connected to a GI 275, connect GSB 15 to avionics bus
BUS Requirement
GI 275 STC EIS & MFD Installation Manual
Page 3-6