Connecting multiple AC transformers

AI Thread Summary
Connecting two AC transformers in parallel to power a lighting rig is possible, provided they are identical in rating, manufacturer, and model. Both transformers must be in phase to avoid potential issues. It is not advisable to operate them at their maximum capacity, as this can lead to overheating and failure. A safer approach is to use transformers with a higher total wattage rating than the combined load. Proper precautions ensure a reliable and safe lighting setup.
HelenaA
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Hi,

I am a newbie so be kind :smile:

I am trying to build a lighting rig using 6 x 12V/20W hallogen bulbs. I have 2 AC transformers each able to deliver up to 60W. Assuming both transformers are supplied by the same 240V AC input, is it ok to connect their outputs together in parallel to supply up to 120W? I understand their outputs would need to be in phase with each other.

Thank you so much
Helena
 
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Make sure the transformers are not only the same rating, but the same manufacturer and model. In other words, identical. It is not good design practice to run 120 watts worth of lights on transformers who's total rating is 120 watts. Don't push it right to the edge.
 
Thank you for the advice! Much appreciated

Helena
 

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