Use different size wire in electro clutch?

The coil in an industrial electromagnetic clutch (connecting the flywheel to the drive mechanism) has gone open-circuit. So it is being rewound by a motor rewind shop.

I was just informed that the original wire was about 12 ga. (maybe slightly larger; original was metric) but it was rewound using 10 ga.

Should I be worried about this change in wire size? Will this change the magnet's strength significantly? The current draw?

Here's the original schematic:

"F" is the clutch coil. The machine isn't currently wired to mains so the clutch's exact operating voltage isn't known. The transformer voltage that supplies the rectifier bridge seems to be 32 v (per label on the schematic). Here's photos of the clutch. (The coil is imbedded in a groove in the metal cylinder.) ::

Will this change in wire size cause me troubles?

Thanks, Dave

Reply to
DaveC
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Why do Americans persist in using stupid AWG that no-one else in the world uses except to entertain you ?

Have you never heard of mm^2 ?

Graham

Reply to
Eeyore

It'll be roughly the same if the volume of conductor in the winding is the same.

Probably higher. Larger gauge wire (lower resistance), fewer turns (if the winding volume is a limiting factor). Its the ampere turns that affect the strength.

I see taps on the trnsformer secondary. It might be possible to compensate for the winding change by selecting a lower voltage tap. If that doesn't interfere with the other relay(?) sharing the tap.

Reply to
Paul Hovnanian P.E.

Forget how to convert Graham?

I don't think 10 awg will be a problem, as long as the # of turns is the same. Measure the current to be sure.

Cheers

Reply to
Martin Riddle

if the wire is a little thicker, the current might be a little higher and the magnetic strength would be a little higher.

looks like you could change the xformer tap to the 30v location if needed. or add a small resistor in series.

Mark

Reply to
Mark

You paint with a wide brush. I'd be perfectly content to use metric, and end up using both systems regularly but it's not as if it's up to me what the whole country uses.

Reply to
James Sweet

We don't need to dumb things down to a level for idiots to be able to do the math.

Reply to
Michael A. Terrell

Oh I can convert. Trouble is, IME a single gauge can cover a range of CSAs. Plus it's pointlessly and wastefully time consuming.

Graham

Reply to
Eeyore

Now that is a helpful comment. Maybe because we are??? Why are there three distinct classes of units in physics? (eventhough SI units are somewhat universal). Cross sectional area and diameter are basic parameters that engineers understand and taught to convert between any system of units. Difference between an engineer and an hack? I like blue, you may like purple. Our rocket went to the moon, you don't have one...Sheese, don't ya have enough nits to pick?

-John

Reply to
jjh

Mostly inertia, of course. On the other hand, the AWG scale is right simple to use to swag the nominal wire resistance, given that it's a log scale and starting with AWG 10 = 1 ohm/1000 feet (yeah, "feet" but ...).

Reply to
Rich Webb

Metric is for people that have to count on their fingers !

Reply to
bg

of course as any fool knows it should be either SWG or thousanths of an inch ;)

Reply to
Ron

Reply to
John Fields

Reply to
John Fields

Only because 42 is the second number in that base. :)

Reply to
Michael A. Terrell

And you dont care about the rest of the world? If you want a clear answer ask a clear question. Dont hide behind obscure local encodings.

Reply to
Sjouke Burry

Forget the dumb donkey. He's just another jealous Europeon.

Reply to
krw

The subject excites you?

Everyone knows that 42 is in base 13. ;-)

Reply to
krw

Reply to
John Fields

That's enough arguing already! Lets compromise and use the FFF units system.

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Reply to
Paul Hovnanian P.E.

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