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will this tranformer configuration work?

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alphacat

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Hello.

black-box-jpg.31169


Inside this black plastic enclosure, i have a 5mΩ shunt which senses the current through the load (up to 16Arms loads).
In 16Arms, the shunt dissipates 1.28W and it gets hot.
I want to check if the enclosure melts when the shunt carries 16Arms for 12 hours, but I dont want to do it by
connecting a 16A load for 12 hours (which is a 4kW load since the mains voltage here is 220V).

So i though of the next configuration and wanted to have your opnion please.
black-box-2-jpg.31168


To make it clear, the transformer receives 12Vac and outputs 80mVac, and its designed to stand 16Arms at its output.
Moreover, I do need to have the enclosure connected to the mains during these 12 hours, since the mains drive
some other circuits that are inside the enclosure.
Thank you very much.
 

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Last edited:
Should work as long as the transformer is isolated input to output.
 
personal injury from potential electric shock perhaps?
 
Last edited:
I was also concerned about possible current from the transformer primary side to the power line common (e.g. you don't want to use a Variac).
 
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