camperpaul wrote:
Mike Stanbro wrote:
-- snip -- it is not unreasonable to install a 30 amp fuse for the jack motor. But, as I have been somewhat preaching, a Type 1 circuit breaker is a much better protection choice as it is possible to exceed 30 amps when the jack hits the top or bottom end and stalls.
An even better choice is limit switches at both ends of the jacks travel.
Instead of the motor stalling and blowing a fuse or tripping a breaker, the limit switches just turn off power to the motor.
Anything else is SHODDY ENGINEERING.
I disagree. Limit switches just add more places to fail and really aren't needed on a jack system where you can easily see the travel and simply avoid hitting the end. There's no reason to run the jacks even near the end. Limit switches means more wiring and connections to fail. Electronic controllers can monitor current flow automatically cut it off but that's pretty much what a self-reseting breaker does.
