EFD1000 Installation Manual
DOCUMENT # A-01-126-00 PAGE 67-225 Revision H
© Copyright 2009 Aspen Avionics Inc.
7 Electrical Installation
7.1 Electrical Load Analysis
Perform an electrical load analysis to verify the aircraft complies with FAR 23.1351(a) using
the current draw of each installed component as determined from Table 7.1 below.
Component Current Draw (amps)
EFD1000 2.4 nominal @ 28Vdc
4.8 nominal @ 14Vdc
RSM – Remote Sensor Module Current Draw
included in EFD1000
ACU – Analog Converter Unit 0.5 nominal @28Vdc
1.0 nominal @ 14Vdc
Configuration Module Current draw
included in EFD1000
Table 7.1 – Current Draw
7.2 Electrical Installation
A 7.5 amp pull type circuit breaker or breaker/switch combination for the PFD will need to be
wired and mounted in a location accessible to the pilot while seated. The breaker will be
powered from the switched battery bus. When installing a switch, label it “EFIS Master” and
install in a location accessible to the pilot while seated. The switch must be rated for at least
7.5 amps continuous duty. Record the location of circuit breaker on Figure D1 of Appendix D.
A two (2) amp pull type circuit breaker for the ACU will need to be installed in a location
accessible to the pilot while seated. Wire the power source from the avionics bus (switched
battery bus if no avionics bus exists). The breaker is to be labeled “ACU” or “ACU #1” in a dual
ACU installation. If a second ACU is installed it will require its own two (2) amp breaker
labeled “ACU #2”. Record the location of circuit breaker(s) on Figure D1 of Appendix D.
Use of MIL-C-27500 shielded wire and MIL-W-22759 single conductor wire is recommended.
All wires should be fabricated as shown in Section 9 keeping all grounds as short as possible.
Wires and connectors must be clearly marked per FAR 23.1365(d).
Wires and wiring bundles must be secured in such a way to eliminate risk of mechanical
damage and minimize exposure to heat and fluids per FAR 23.1365(e).
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