Document Number:
MAN
– FD932DVD-LP-3(-AV)
Rev:
C
Revision Date:
09/16/2016
Page 8 of 33
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2016 FDS Avionics Corp.
All Rights Reserved.
TECHNICAL SUPPORT
470-239-7421 or FDSAvionics.com
Power and Ground Wiring
The rated current of the equipment and associated voltage drop should be taken into
consideration when selecting wire gauge. The following example is based on an install with a
28VDC power system, 1.5 amp equipment load and a total of 50 feet of wire between the circuit
breaker, monitor and ground.
Example:
22awg wire has 16.2 Ohms per 1000 feet, this equates to .81 Ohms for 50 feet. 1.5
Amp of current on .81 Ohms will drop 1.22 Volts.
Resistance of Wire Type M22759/16-**
(** = Gauge)
Gauge (AWG)
OHMS/1000’
24
26.20
22
16.20
20
9.88
16
4.81
12
2.02
10
1.26
8
.701
Also, use short heavy gauge wire and a clean tight connection for ground.
It is the installer's responsibility to understand the product's requirements in order to install the
product in compliance with industry standards and safety.
