I’m looking at the 200075 and it states if the current is greater than 20A you’ll need a shunt. So if the current is less than 20A, does the device have its own shunt built in?
The 20A means if measurement range of meter is 20A, it doesn’t need shunt. 200075 is with 50A range, no matter how large the actual current it is, shunt is necessary.