Thread: Wiring of a single phase motor.

Your best bet is to contact Brook Crompton Betts for advice.

BCB Sales and Service, Electrical Motors Specialists

I'm sure they will have a wiring diagram.

Ken

Bloke

Get a electrician to work out the correct wiring of it.

DD

There should be a connection diagram on the inside of the terminal box cover.
Other than that as a licensed electrician I would not attempt to do any thing without being able to stick the probes of my trusty multi meter on the terminals to take some readings and would not recomend anyone else to do otherwise.

Thanks to neksmery,DingoDog, A Duke.
I will get in touch with a local electrician, there is no wiring diagram inside the terminal cover only instructions on how to rewire it to reverse direction.
Bob

I would be very shy of using this motor for a belt grinder/linisher as it is not a sealed motor. The motor will end up getting a lot of hot metal dust and grit going through it however you set it up. Typical life in an industrial setting would be weeks compared to decades for a true sealed motor unit.

The motor in your photo allready has a power cable on it.

Hi Krisfarm,

Just going by the motor nameplate it's a CSCR, that means it's capacitor start, capacitor run, I don't see any caps in the pictures?

That power cable, was that there originally or is it something you've connected?

This may help, figure it out...

This is the table for cscr single phase, I've circled the one I think is correct, which means you need a 200uF start cap and 25uF run cap.



The wiring diagram should look something like this...



Obviously the capacitor with the switch in series with the start winding is the 200uF "Start" capacitor, and the other one
is the 25uF run capacitor.

Hope that get's you heading in the right direction..

Regards
Ray

with due respect to electricians most of them would'nt have a clue on how to connect it
They may know household wiring but when it comes to anything else they (most of them) need guidance as well

take it to a motor rewind centre to ensure you get it right the first time....

Originally Posted by eskimo

with due respect to electricians most of them would'nt have a clue on how to connect it
They may know household wiring but when it comes to anything else they (most of them) need guidance as well

take it to a motor rewind centre to ensure you get it right the first time....

WOW. You know every electrician in Australia and know everything they are capable of as well. I'm impressed.
What a stupid statement.

Originally Posted by NCArcher

What a stupid statement.

(I guess that hurt...lol)

No it is not.
Its based on some 40 odd yrs experience of using sub contractors to wire up airconditioning units

most of them cant even follow a schematic wiring diagram unless it is of the most simple form.

Unless its plug and play its too hard..... they are somewhat limited in their ability to follow complex circuits...and this may include an electric motor ...its one thing to be able to determine if the motor faulty but to ensure its wired correctly is another matter....

you cant give them a task to do which involves anything else other than fitting a light switch/power point/light fitting or running mains cable to the unit isolating switch, they are out of their depth...exceptions to this are or might include those guys who regularly work on control cabinets and the like.

Your so called domestic/commercial electrican usually has no idea!....and they have a licence....(as I do)

eskimo
It seems to be a sore point with you, I would like to say you are prejudice but the only thing I would change is to say many rather than most. You will find a similar reference in one of my earlier posts on remote starting for dusties.
What any one wanting to get expert electrical opinion needs to know is that Electricians come in three flavours, Domestic Commercial or Industrial and although we are all taught the basic a hell of a lot forget anything out side their speciality.
Anyway I hope this has not strayed too far off subject and to say I approve whole heartedly with the forum's Electrical warning, no one can guaranty any thing with out being able to get the test equipment on it.

Originally Posted by NCArcher

WOW. You know every electrician in Australia and know everything they are capable of as well. I'm impressed.
What a stupid statement.

Go to a motor repair centre, I have worked selling motors for the past 25 years and i wish I has a dollar for every motor an electrician has buggered up, I would be rich.

Do your self a favour don't stuff around, take it to an expert.

Originally Posted by Phil Spencer

Go to a motor repair centre, I have worked selling motors for the past 25 years and i wish I has a dollar foe every motor an electrician has buggered up, I would be rich. Fasco took over Brook Crompton Bets and they have also just taken over CMG.

Do your self a favour don't stuff around and take it to an expert.

I agree

But where do you find a real expert?

I'm lucky - I Have a few old school friends who are electrical engineers who, (for fun) keep up their certificates so they can certify installations. But most 'electricians' shouldn't be let loose with a packet of Minties, let alone AC.

Originally Posted by jmk89

I agree

But where do you find a real expert?

I'm lucky - I Have a few old school friends who are electrical engineers who, (for fun) keep up their certificates so they can certify installations. But most 'electricians' shouldn't be let loose with a packet of Minties, let alone AC.

Yellow pages is a good place to start under 'Electric Motor Repairers' if that doesn't work ring one of the motor sellers, WEG, Teco CMG (get the picture) and ask them they are happy to advise on a good repairer.

If I sound terse it is because I am waiting for some poor sod to have a fatal accident because of some of the advice given. This sort of thing should not even be discussed here except to ask and recommend a qualified person to repair motors.