Car Lift overloads required?

[Sberry]

I was going to say never also. There are millions of these and every time it comes up its almost like it was invented yesterday.

 

[Sberry]

This application doesn't even require motor overload protection. Every one I ever seen was a intermittent duty rated motor. By nature of the operation they are an intermittent load anyway they all have a momentary contact button and you must hold to run the motor. They don't run long enough cycle to even trip normal motor overload protectors. If motor stalls or fails to start for some reason you are right there to let up on switch and if you don't it will trip your short circuit/ground fault protection within a few seconds anyway.

Check this section out:
View attachment 2582314

I wasnt sure where it was but read it before, good job.

 

[Sberry]

If its for a customer,,, or yourself a nice touch or even uopsell is a 30A welder circuit (6-50-R) to it for smaller wire feeds. They use the same wire and breaker.

 

[don_resqcapt19]

Not sure if 2 pole starters are available or ever were. Very common to use a 3 pole starter for single phase. They tell you to use the two outside poles L1 & L3

A starter is not required to break both circuit conductors so often a one pole starter is used for a single phase 240 volt motor.

 

[Sberry]

Some days I wonder. Millions oif these sold that cone ready to hook wires too, all approved with safe stickers and listings. 2 guys in a thread of 20 grasp its ready to go,, 18 start to invent something new using 3 phase contactors and probably a dozen other gadgets if we let them. Sometimes I can feel ,,, there is a word for it,,,, especially when it gets technical,,, then there is a thread makes me wonder where they learned to do this work?
That is not to the OP, it was a good question and I wondered the first time I did one and might have asked Bob and Don on ETF.

 

[hillbilly1]

Some days I wonder. Millions oif these sold that cone ready to hook wires too, all approved with safe stickers and listings. 2 guys in a thread of 20 grasp its ready to go,, 18 start to invent something new using 3 phase contactors and probably a dozen other gadgets if we let them. Sometimes I can feel ,,, there is a word for it,,,, especially when it gets technical,,, then there is a thread makes me wonder where they learned to do this work?
That is not to the OP, it was a good question and I wondered the first time I did one and might have asked Bob and Don on ETF.

Nothing wrong with the op wanting to add overload protection if he wants it. Whether required or not. Most I’ve seen are self contained, you just put power to it. Never bothered to look at whether it had built in overload protection because the controls were self contained, so I never had that question.

 

[jim dungar]

...18 start to invent something new using 3 phase contactors and probably a dozen other...

It was the OP that mentioned using overloads and possibly starters. We just tried not to derail the discussion.

 

[jap]

It was the OP that mentioned using overloads and possibly starters. We just tried not to derail the discussion.

Exactly,
Who knew by the first post?
Maybe someone was stick building a car lift in their shop, and, we could have simply said:
MST02SN with a MSH15-6A Heater, or, something similar, which would have served as both the disconnecting means & the overload protection.

Oh well,,,

Jap>

 

[jim dungar]

Exactly,
Who knew by the first post?
Maybe someone was stick building a car lift in their shop, and, we could have simply said:
MST02SN with a MSH15-6A Heater, or, something similar, which would have served as both the disconnecting means & the overload protection.

I was going off this sentence from the OP.

Can't find any overload/starters that match this range, and am hesitant to start rigging 3 phase starters for single phase, as I hear often mixed success with this.

 

[Little Bill]

Never saw one that needed a Motor Starter.
The momentary pushbutton to start the hydraulic motor is on the side of the pecker head to raise the car.
The lever releases the hydraulics to lower the car.
Usually a head bar over the top with a N/C contact that you series the power through so it stops the motor should the car get too high.

All simple stuff.

Jap>

Was going to post the same thing. I've hooked up a few of these and only brought line power to the machine. I think one of them had a control cabinet. All of them had the safety loop at the top to stop it if it is too high.