Specifications are subject to change. See bluesea.com/products/7608 for current information.
6
Conductor Length
in feet (meters)
Conductor in
engine space?
Positive Wire (sized for maximum alternator output)
Negative Wire
(sized for 20A
charger output)
Alternator up to 30A
Alternator up to 60A
Alternator up to 120A
Alternator up to 170A
6 ft (1.83 meters)
NO
8 AWG (10 mm²)
6 AWG (16 mm²)
2 AWG (35 mm²)
1/0 AWG (70 mm²)
10 AWG (6 mm²)
YES
8 AWG (10 mm²)
4 AWG (25 mm²)
1/0 AWG (70 mm²)
3/0 AWG (95 mm²)
10 AWG (6 mm²)
10 ft (3.05 meters)
NO
6 AWG (16 mm²)
4 AWG (25 mm²)
1 AWG (50 mm²)
1/0 AWG (70 mm²)
8 AWG (10 mm²)
YES
6 AWG (16 mm²)
4 AWG (25 mm²)
1/0 AWG (70 mm²)
3/0 AWG (95 mm²)
8 AWG (10 mm²)
15 ft (4.57 meters)
EITHER
4 AWG (25 mm²)
2 AWG (35 mm²)
2/0 AWG (70 mm²)
3/0 AWG (95 mm²)
6 AWG (16 mm²)
20 ft (6.09 meters)
EITHER
4 AWG (25 mm²)
1 AWG (50 mm²)
3/0 AWG (95 mm²)
4/0 AWG (120 mm²)
6 AWG (16 mm²)
25 ft (7.62 meters)
EITHER
2 AWG (35 mm²)
1/0 AWG (70 mm²)
4/0 AWG (120 mm²)
2x2/0 AWG (2x70 mm²)
4 AWG (25 mm²)
Recommended Fuse Rating **
50A
90-100A
175A
225A
40A (see next row)
Fuse Required For Negative?
YES, if negative wire is
< 10 AWG (6mm²)
YES, if negative wire is
< 6 AWG (16mm²)
YES
YES
-
Fuse Type
Fuse Holder PN
Recommended Blue Sea Systems Fuse PN
MRBF Fuse
5191
5177 (50A)
5182 (90A)
5186 (175A)
5188 (225A)
Not Recommended
AMI®/MIDI® Fuse
7720
5252 (50A)
5256 (100A)
5259 (175A)
Not Recommended
5251 (40A)
Class T Fuse 110-200A
5007100
Not Recommended
Not Recommended
5115 (175A)
Not Recommended
Not Recommended
Class T Fuse 225-400A
5502 or 5502100
Not Recommended
Not Recommended
Not Recommended
5117 (225A)
Not Recommended
MAXI® Fuse
5068 or 5006100
Not Recommended
Not Recommended
Not Recommended
Not Recommended
5139 (40A)
* Based on 3% voltage drop and 105°C rated wire insulation.
** Fuses in positive wires should be located as close as possible to the battery positive terminal, per ABYC recommendations. If required, the fuse in the negative wire should be located as
close as possible to the charger. Fuse type selected should be verified to have a sufficient amperage interrupt capacity (AIC) for your battery capacity.
For more information please use the Circuit Wizard at circuitwizard.bluesea.com
Wire Size and Fuse Rating Chart
*
Supplies Needed
1. DC Wire: Black or yellow for negative, red for each positive.
NOTE:
All wiring should be of sufficient length to allow proper routing, support, drip loops, service loops,
and termination.
2. Fuse holders for connection to each battery, for charger negative, and for optional Start Isolation, Combine Batteries
and Remote LED wiring if used (see Full Installation Diagram, page 9).
3. Fuses for fuse holders (see table below and Full Installation Diagram, page 9).
4. Screwdriver: Phillips #2 for mounting screws.
5. Socket wrench (torque wrench preferred): 9/16
”
deep socket for DC battery positive connections. 7/16
”
socket for
DC battery negative and DC safety ground connections. Other socket sizes as needed for connection to battery and
fuse holder terminals.
6. Terminals: 3/8
”
or M10 ring terminals for charger side DC battery positive connections. 1/4
”
or M6 ring terminals
for charger side DC battery negative and DC safety ground connections. 1/4
”
x 0.032
”
female quick connect
terminals for accessory connections. Other ring terminals sized for connection to battery and fuse holder terminals.
7. Appropriately sized butt connectors for extending remote LED and battery temperature sensor wires.
8. Crimping tool or obtain wires that are pre-terminated.
9. Appropriate heat shrink if pre-terminated wires were not acquired.
10. Remote switch for Manual Combine feature if desired. Blue Sea Systems PN 8292 (momentary SPST) or
8282 (non-momentary SPST) suggested.
