Blue Sea Systems - Resources
Selecting the Appropriate Fuse Rating When Installing the 120A SI ACR
When installing Blue Sea Systems 120A SI ACR, PN 7610, use this chart to select the appropriate wire size and fuse rating.Wire Size and Fuse Rating Chart (AWG) |
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Charging Amps |
Minimum Wire Size* |
Fuse Amps |
60 |
#6 |
80 Amps |
80 |
#4 |
100 Amps |
100 |
#2 |
150 Amps |
120 |
#1 |
175 Amps |
Wire Size and Fuse Rating Chart (Metric) |
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Charging Amps |
Minimum Wire Size* |
Fuse Amps |
50 |
10 mm |
75-80 Amps |
70 |
16 mm |
80-90 Amps |
90 |
25 mm |
125-130 Amps |
110 |
35 mm |
150 Amps |
120 |
50 mm |
150-175 Amps |
Fuses installed between ACR terminals A and B, and each battery positive are to prevent a hazard if there is damage to the wires from the batteries to the ACR. Therefore, the fuses should be placed as close as possible to the batteries so that most of the wire is protected.
Since these fuses connect directly to batteries, choose fuse types that have sufficient AIC for your battery bank. ANL fuses and Terminal Fuses are ideal for this application.
