fuse blows.

[toold]

I am able to lift and lower the tent trailer twice and on the second time of lowering the trailer the winch fuse blows.

Does anyone have any ideas why??
thank you

[fonzie]

As the battery is used (gets low) the current in the motor will get higher to make it function until voltage is too low to operate....try it with shore power plug in and you should be able to raise and lower all you want, let us know