Rev:
G
Revision Date:
10/31/2014
Page 9 of 18
MAN
– FD141CV
Power and Ground Wiring
This is a 28VDC monitor that requires 1 amp of power to operate. To operate properly this
monitor requires an input voltage of 24-29VDC.
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 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 Amp of current on .81 Ohms will drop .81 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 to install the
product in compliance with industry standards and safety.
