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Yes. EDIT: The manual states that in impedance loop test at 400V=20A and at 230V=12A. Using that same ratio, it appears at 120V, it would be about 6A.

That's the point. Our GFCI's work the same way using balanced current but with a lower limit than a RCD. As I mentioned, 4-6ma is the lower limit but to be within US UL standards, it can have a trip time up to 5600ms. The maximum trip time of 25ms might be at >200ma as it's all on a graph.

Right, we are 120V. Is 10Kohms just a value that you picked? Ours trip at 4-6ma. Using the lowest trip current of 10ma on the 1653, a GFCI with trip in 3-4ms but at 30ms it's 0ms.

We have CB's with GFCI's built in too. GFCI minimum trip current is 4-6ms and maximum trip time is 25ms. The Fluke 1653 manual states that it will trip a RCD during the L-PE loop test and I've seen posts in other forums confirming this. I have a similiar tester that reads our L-N-G...

I'm in the US where we use GFCI which from all I've read and diagrams are for the most part except tripping current, the same as a UK RCD. I have use of a Fluke 1653 which the manual states will trip a RCD when L-PE loop test is performed. I can't verify that because we don't use them in...