In a one wire setup you are only charging the battery, and the battery
supplies energy to the rest of the system. The alternator only pulls max
amps when the battery is completely drained, like pulling the coil wire and
grinding the starter until you run out of juice, or turning on a 150 watt
driving light without starting the engine, and leaving it on for a while.
Put a 30 amp fuse into the wire from the alternator to the battery to
protect the rest of the system if the alternator malfunctions and tries to
overcharge the battery, or if there is a short in the system, which was
designed for less than 30 amp loads. If you really want to protect the
system, put three 30 amp fuses in series, for a grand total of 90 amps of
protection. A diagram is below.
Alternator
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30 amp fuse
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30 amp fuse
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30 amp fuse
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Battery
If you put six 15 amp fuses in series, you get the same protection. Or nine
10 amp fuses.
Leisure Suit Terry
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