Mercury Optimax Models 135, 150, Direct Fuel Injection., Page 75Get this manual
CHARGINGSTARTING SYSTEM
Battery Cable Size
If standard (original) battery cables are replaced with longer cables, the wire gauge size must increaseSee chart below for correct wire gauge size
Wire Gage Size
Battery Cable Length
Battery Cable Wire Gage Size MercuryMariner Outboards Battery Cable Length
8 ft9 ft10ft11ft12ft13ft14ft15ft16ft17ft18ft19ft20ft21ft22ft23ft24ft2.4m 2.7m 3.0m 3.4m 3.7m 4.0m 4.3m 4.6m 4.9m 5.2m 5.5m 5.8m 6.1m 6.4m 6.7m 7.0m 7.3m
Models 6-25 Hp 30-115 Hp 125- 250 Hp (except DFI) DFI Models #8 #6 #8 #4 #6 #4 #6 #6 #4 #6 #6 #4 #4 #6 #4 #4
Wire Gage Size NoSAE #4 #2 #4 #4 #2 #4 #4 #2 #4 #4 #2 #4 #4 #2 #2 #4 #2 #2 #4 #2 #2 #4 #2 #2 #2 #0 #2 #2 #0 #2 #2 #0 #2