Sberry
Senior Member
- Location
- Brethren, MI
- Occupation
- farmer electrician
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.
I wasnt sure where it was but read it before, good job.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
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.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
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.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.
It was the OP that mentioned using overloads and possibly starters. We just tried not to derail the discussion....18 start to invent something new using 3 phase contactors and probably a dozen other...