I brew with a 240V electric induction cooker and have been “getting by” without using a GFCI. Another thread reminded me that safety is important so I bought and put together a stand-alone GFCI unit to put in-line with the power to the cooker. When testing it- the GFCI tripped at low power as the cooker power cycled on and off, but it didn’t trip at full power. Not exactly what I want as I boil at low power once up to temp.
I assume the large current draw when the induction cooker cycles on is the culprit. I have no way of knowing if I’m right or if there is a larger problem with my cooker. Anyone have an knowledge on this?
My advice is to get a licensed electrician. Better to error on the side of caution. You may need to have him change the circuit breaker with a built in GFCI.
Also, I assume the outlet is a dedicated circuit only for your device. If not, you might want to do so.
I can tell you that a GFCI in a 120v application measures the difference in amperage between the Hot and Neutral wires. If the two leads are not perfectly identical, it indicates a “leak”. A “leak” indicates amperage is going elsewhere and the result is a Trip. I’m not sure how a 220v GFCI measures these values. Perhaps you can post a wiring diagram or model number?