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I don't think one needs thumb sized conductors so I'll ask the question.
 

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Piaggio MP3, was 02 GL1800
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dunno, but about 160 amps peak when the solenoid first makes contact. And probably 50-60 amps to roll it over for 5 seconds or so.

4 ga. wire should do the trick, that's over kill. 6 ga. though is probably what is used by Honda.
 

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Thanks guys
 

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Series wound DC motor at .75 HP equals .75 x 746 w for 559.5 w at 10 volts thats 60 Amps rated at 1x. Series motors can draw up to 6x, but my 1100 has been monitored at 3.5 x So 60 x 3.5 is 210 A for 1 sec, amperage drops considerably and settles around 100 A nominal for 5 seconds at a time.

So using safe rule of thump
With a good battery, good cables and connections, good charge system and at 65 F ambient 100 A is a good number.

But all hell breaks lose when any of the conditions are not met.

By the way I have measured the amps on a cold start on 80 1100 in good tune with all conditions met and it is between 95 and 105 amps.
 
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