i have a transformer and i need to tell if it is 1200v or 12v without touching it i shorted i out a couple of times it welded together 22gadge wire and it got really hot it looked just a little bit bigger of a spark than a 12v battery but yah do you think it is 12 or 1200 and do you think i should reverce it and try it the other way
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I am assuming this is a continuation of your other question.... I'm guessing you have it wired as a 12v stepdown transformer (120 in 12 out). If you had it wired the other way, it PROBABLY would not generate enough current to "weld" the wire without tripping a breaker in your house. Before you go any further, you really should get a way to measure the voltage. BTW, what do you need the 12v for? I hope you are taking safety precautions, unlimited line current can kill.
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Measure the resistance of the windings with an ohmmeter.
Generally the low-voltage side would have fewer thicker turns and so a lower resistance.
If you connect it up, you can measure the output voltage.
But you also need to know the volts rating, which depends on the insulation on the windings and connections. I assume a transformer intended for high voltage would have obviously better insulation than one intended for 120V.
Generally the low-voltage side would have fewer thicker turns and so a lower resistance.
If you connect it up, you can measure the output voltage.
But you also need to know the volts rating, which depends on the insulation on the windings and connections. I assume a transformer intended for high voltage would have obviously better insulation than one intended for 120V.
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If you don't know what you're doing, DON'T.
You didn't mention if it was AC or DC, In DC smaller than a breadbox is 12VDC.
You didn't mention if it was AC or DC, In DC smaller than a breadbox is 12VDC.
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look it up at gradesave.com