bluesea.com APPENDIX 160 0.73" (18.6mm) 0.63" (15.9mm) 1.36" (34.5mm) 1.1" (27.8mm) 1.62" (41.1mm) 2.70" (68.6mm) 2.75" (69.9mm) 3.19" (80.9mm) 0.79" (20mm) 0.64" (16.3mm) 1.25" (32.0mm) 0.25" (6.4mm) 0.2" (5.0mm) 0.25" (6.4mm) 0.48" (12.2mm) 0.43" (10.9mm) 0.75" (19.1mm) 1.16" (29.3mm) 0.75" (19.1mm) 0.91" (23.0mm) Ø 1.31" (33.3mm) 0.75" (19.1mm) Ø 1.06" (27.0mm) 2.44" (61.9mm) 110A–200A 225A–400A 2. Choose the Correct Fuse and Fuse Amperage ATO®/ATC® MAXI AMI®/MIDI® MEGA®/AMG® MRBF® Terminal Class-T ANL® AGA® GMA® AGC®/MDL® ATM® Fuse Scale Comparison L E G E N D Outside Engine Room Inside Engine Room SINGLE WIRE BUNDLED WIRES SINGLE WIRE BUNDLED WIRES SINGLE WIRE BUNDLED WIRES SINGLE WIRE BUNDLED WIRES SINGLE WIRE BUNDLED WIRES .25A to 30A 25A 20A 30A 20A 25A 30A 15A 20A 25A 25A 20A 30A 20A 25A 30A 15A 20A 25A 30A 50A 60A 80A 30A 40A 50A 70A 30A 40A 60A 80A 40A 50A 70A 30A 50A 60A 80A 125A 150A 200A 30A 40A 50A 70A 100A 125A 175A 200A 30A 40A 60A 80A 125A 150A 175A 200A 40A 50A 70A 100A 125A 150A 175A 30A 50A 60A 80A 125A 150A 200A 250A 300A 30A 40A 50A 70A 100A 125A 175A 200A 250A 300A 30A 40A 60A 80A 125A 150A 175A 200A 225A 250A 300A 40A 50A 70A 100A 125A 150A 175A 200A 225A 250A 225A 250A 300A 250A 300A 350A 400A 400A 250A 300A 350A 400A 225A 250A 35A 50A 80A 130A 150A 200A 250A 300A 350A 400A 400A 40A 60A 100A 130A 175A 200A 250A 300A 350A 400A 35A 40A 60A 80A 130A 150A 175A 200A 225A 250A 40A 50A 70A 100A 150A 175A 200A 225A 250A 300A 4|0 AWG 3|0 AWG 2|0 AWG 0 AWG 1 AWG 2 AWG 4 AWG 6 AWG 8 AWG 10 AWG 14 AWG 12 AWG 16 AWG 110A 150A 175A 200A 125A 175A 200A 100A 150A 175A 200A 125A 150A 175A 200A AWG W I RE S I ZE SINGLE WIRE BUNDLED WIRES SINGLE WIRE BUNDLED WIRES 125A 150A 200A 250A 300A 100A 125A 175A 200A 250A 300A 125A 150A 175A 200A 225A 250A 300A 100A 125A 150A 175A 200A 225A 250A SINGLE WIRE BUNDLED WIRES SINGLE WIRE BUNDLED WIRES 1A to 30A 30A to 80A 30A to 200A 30A to 300A 225A to 400A 35A to 400A 110A to 200A 100A to 300A a) Choose a fuse type by following the line of the AWG WIRE SIZE determined from the Wire Selection Chart Appropriate fuses will have an amperage that intersects the AWG Wire Size line. b) The appropriate fuse amperage will be found in one of the four gray bars below the fuse type - Single Wire, Outside Engine Room = First column dark gray bar - Single Wire, Inside Engine Room = First column light gray bar - Bundled Wire, Outside Engine Room = Second column dark gray bar - Bundled Wire, Inside Engine Room = Second column light gray bar Example: For a 4 AWG single 105°C rated wire outside an engine room, the maximum fuse amperage is 150A. Note: Possible fuse amperages for a circuit can fall between a range of maximum and minimum fuse amperages. The procedure in step 1 calculates the maximum fuse amperage which reduces nuisance blows but may offer less protection than a lower amperage fuse. The minimum fuse amperage is calculated by multiplying the current flow in amps by 125%. If the product instructions specify a fuse amperage, use that value if it is under the maximum amperage found in the step 1 procedure. If the specified fuse amperage is over the maximum suggested, move down the column and choose the wire size that intersects with the specified fuse amperage. Calculations are based on 105°C wire. For more detailed calculations, download the Circuit Wizard app or go to circuitwizard.bluesea.com Fuse types selected should be verified to carry an ampere interrupting capacity (AIC) that meets the requirements of ABYC E-11.10.1.2.2 or E-11.10.1.2.3, based on the total capacity of the battery or battery bank supplying current through the fuse. This should include all batteries or banks that could be put in parallel through the use of a battery selection, or cross connection switch if the fuse is installed on the load side of the switch. FUSE SELECTION CHART
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