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MAN – FD320LIFT-LP Ver HD
Power and Ground Wiring
This is a 28VDC monitor that requires 10 amps of power to operate. The rated current
of the equipment and associated voltage drop should be taken into consideration when
selecting wire gauge. To operate properly this monitor requires an input voltage of 25-
32VDC allowing a 3 volt drop on the wire, this is the sum of the voltage drop on the
28V power wire and the voltage drop on the ground or power return wire.
The following examples are 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 1: 20awg wire has 9.88 Ohms per 1000 feet, this equates to .494 Ohms for
50 feet. 10 Amps of current on .494 Ohms will drop 4.94 Volts. This exceeds the
allowable voltage drop to operate this monitor.
Example 2: 10awg wire has 1.26 Ohms per 1000 feet, this equates to .063 Ohms for
50 feet. 10Amps of current on .063 Ohms will drop 0.63 Volts. This is within the
allowable range to operate this monitor.
Resistance of Wire Type M22759/16-**
Gauge (AWG)
Some connector pins are only compatible with the smaller gauge wires. If multiple
power pins are available then all pins should be used. Multiple strands of wire may be
run to the circuit breaker panel, or the multiple small gauge wires may be joined to a
larger gauge wire for a single strand run to the circuit breaker panel. 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.
All manuals and user guides at all-guides.com
(** = Gauge)
OHMS/1000'
24
26.20
22
16.20
20
9.88
12
2.02
10
1.26
8
.701
Rev:
Revision Date:
08/27/2012
C
Page 10 of 22
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