Engine: Electricity

1. A It is a limit switch which illuminates a warning light to warn the winch operator when the hoist block is approaching the boom
2. B It is a limit switch which illuminates a warning light to warn the winch operator when the cable has only a few wraps on the drum while paying out
3. C It is a limit switch which automatically stops the winch drum rotation in the lower direction before all the cable is payed out insuring that a few wraps remain on the drum
4. D It is a limit switch which automatically stops the winch drum rotation in the hoist direction before the hoist block is able to strike the boom

Tip: press A-D to answer