blown capacitor

[hughie]

Need to replace the start capacitor on my lathe motor , need a local vendor western Sydney.
I gather the capacitor is not standard 125VAC 200MFD

[Avery]

I would have thought that a starting cap should have about a 400volt rating and be more like 20 microfarad -


Anyway try Jaycar Electronics at Rydalmere or online at

Jaycar Electronics - Better. More Technical.

[TTIT]

When the one on my MC900 carked it the only one I could find that would fit within the cover (though it's not essential) that was close to spec was from an old fluro light - still going to this day I believe - exact spec's aren't that important for a starter capacitor

[Avery]

When the one on my MC900 carked it the only one I could find that would fit within the cover (though it's not essential) that was close to spec was from an old fluro light - still going to this day I believe - exact spec's aren't that important for a starter capacitor

I would have thought that if you were going to stick a capacitor. across 240v, it should have a voltage rating to cope with the peaks, anything less will, at best, be unreliable and at worst, a fire hazard.

I think specs. do matter.

[Sawdust Maker]

I thought the start cap in my bandsaw had died
couldn't find one anywhere to the same specs - took the motor to a local motor bloke, turned out to be a dud switch inside
motor was also gunked up with dust for some reason

[hughie]

In my case its an old motor and the way the cap is wired is at half the voltage ie 110 So I will require the 125VAC I have had the cap tested and its faulty and its the easiest thing to get at on the motor.
It was bench tested with no load OK But with the belt on etc it needs a flick to get the direction right

tried Jaycar, RS Components, Farnell etc They only have 240 volt and maybe 20-30MFD

[robbygard]

Need to replace the start capacitor on my lathe motor , need a local vendor western Sydney.
I gather the capacitor is not standard 125VAC 200MFD

auto electricians are sometimes useful to source these sort of odd things

regards david

[malb]

They only have 240 volt and maybe 20-30MFD

It is perfectly safe to install a 240VAC or higher voltage unit to replace a lower voltage rated unit, but not smart to go the other way. May not solve the capacitance value issue however, but 200microFd sounds high for a start cap.

[woodwork wally]

yes mate I bought mine thru Jaycar no worries cheers www

[Enfield Guy]

Refrigeration maintenance suppliers have about the widest range of capacitors on shelf usually. That's where I got one for my bandsaw earlier in the year.
Cheers

[hughie]

Thanks for all the help, much appreciated.

Rang around and got an average price of $50, thought it was a bit over the top

In the end got it from a mob in Adelaide $17.65 plus freight $10. They have an office here but its still closed for Christmas.

[Hickory]

Do you smell the "Factory Stink" or see the "Factory Smoke" (Factory puts in stink and smoke so you can tell when you blow one)
If no to either question, then look toward the Cyntrifical switch at the end of the motor shaft. I may be rusty or gombed up with dirt and dust. Some WD40 or equal spray lube should loosen up the switch

[woodwork wally]

Hi Hughie What H.Power is your motor . I'll see what I can find out further but I am certain the voltage rating is not critical But the capacitance value is matched to a large extent to motor H.P.and characteristics Is it a standard single phase or 3phase with speed control {hence 125 v ] with cap across one phase. Long time since I used Dip. but will scratch the brains given the right info cheers ww.wally

[hughie]

What H.Power is your motor . I'll see what I can find out further but I am certain the voltage rating is not critical But the capacitance value is matched to a large extent to motor H.P.and characteristics Is it a standard single phase or 3phase with speed control {hence 125 v ] with cap across one phase. Long time since I used Dip. but will scratch the brains given the right info cheers ww.wally

single phase 240v, 1HP, 200mfd capacitor 125vac. No speed control.