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How bad is it to do this for current measurement.
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Here it is:
https://imgur.com/gallery/CiUa0g4
The resistor is 20 mOhm and the right wattage.
It's not the best but how bad is this connection.
I think the gnd will cause a short. It is always connected to the negative side of Ac so when the side of the shunt resistor is positive Ac it will cause a short. Of course considering both are getting power from same AC source.
Is this right? I hope I said it right?
For electric spikes and transeit voltage. I wil add a MOV or a bidirectional TVS.
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