I understand perfectly. If you check, most solenoids have either a large spade terminal, or a bolted on terminal. And usually relatively heavy gauge wire. Also dont forget that it isnt a slow draw of current, its quite a large one albeit over a short duration of time. ( although on some Fords...that could be a longer period :P )

SO wire gauge may not always be as heavy as might be needed for a sustained heavy load.

Either way, the solenoid does draw a fair bit of current and could blow a fuse quite easily, unless perhaps a slow blow fuse was used.