i am using several transformers on a single multiplug. How do I know/test if they are all in phase?

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Attach wires to the positive terminals of each transformer.  Plug in the transformers.  Adjust both transformers to the same voltage (say 15-18 volts).  Touch the free ends of the wires for a split second.  If there is no spark, the transformers are in phase. If there is a spark, the transformers are not in phase and you need to reverse one of the plugs. 

 

Last edited by Lehigh74

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