14
Lay the positive and negative cables next to each other to
limit the electromagnetic field around the cables. The
negative cable should be connected directly to the
negative post of the battery bank or the ground side of a
current shunt. Do not use the chassis frame as the
negative conductor. Tighten securely. The positive battery
cable must be fused and connected to the positive post of
the battery bank.
The recommended DC fuses for outputs 1, 2 and 3 are:
ChargeMaster Plus model
DC fuse
12/75-3
85A
12/100-3
125A
24/40-3
50A
24/60-3
80A
The fuse with the fuse-holder is available from your local
Mastervolt distributor or Customer Service Representative.
4.3.2
AC-wiring
WARNING!
The ground wire offers protection only if the
enclosure of the ChargeMaster Plus is
connected to the safety ground. Connect the
ground terminal (PE / GND) to the hull or the
chassis.
CAUTION!
According to local regulations a RCD/Breaker
must be placed in the AC input circuit of the
ChargeMaster Plus.
For a safe installation the correct wire cross section must
be applied. Don’t use a cross section that is smaller than
indicated. See table below to select the appropriate cross
section for the AC wiring (up to 6m / 20ft length):
AC-Current
Minimum cross section:
in mm²
AWG
6-12 Amp
1.5 mm²
AWG 14
12-20 Amp
2.5 mm²
AWG 12
20-32 Amp
4.0 mm²
AWG 10
Connection of AC-wiring and recommended wire colours:
230V/50Hz installations:
Wire color
Meaning
Must be
connected to:
Brown or black
Phase
L1
Blue
Neutral
N
Green/Yellow
Earth
PE / GND
120V/60Hz installations (single phase):
Wire color
Meaning
Must be
connected to:
Black
Hot or Line
L1
White
Neutral
N
Green
Ground
PE / GND
4.3.3
AC safety grounding
WARNING!
The ground wire offers protection only if the
enclosure of the ChargeMaster Plus is
connected to the safety ground. Connect the
ground terminal (PE / GND) to the hull or the
chassis.
CAUTION!
For safe installation it is necessary to insert a
Residual Current Device (earth leakage
switch) in the AC input circuit of the
ChargeMaster Plus.
4.4
BATTERIES
Always follow the instructions published by battery
manufacturer.
ChargeMaster
Plus model
Recommended battery capacity
12/75-3
140Ah
-
800Ah
12/100-3
200Ah
-
1000Ah
24/40-3
80Ah
-
400Ah
24/60-3
120Ah
-
500Ah
4.5
THINGS YOU NEED
Make sure you have all the parts you need to install the
ChargeMaster Plus:
ChargeMaster Plus (included)
Battery temperature sensor with cable and plug
(included).
DC cables to connect the ChargeMaster Plus to the
batteries and common negative; see section 4.3.1 for
specifications
DC-fuse holder with a DC-fuse, to be integrated in the
positive DC-cable; see section 4.3.1 for specifications
Screws / bolts (Ø 6mm) (with plugs) to mount the
enclosure to a surface. Use mounting materials which
are suitable to carry the weight of the ChargeMaster
Plus
AC cable to connect the AC input to an AC power
source. See section 4.3.2.
Batteries; see section 4.4
Appropriate and reliable cable terminals, cable lugs,
battery terminals and cord end terminals
We recommend as a minimum tool kit:
Socket wrench 13mm to fix the main DC-cables
