Yesterday I posted requesting a video requesting a demonstration of the Ze test (in LOOP High mode) . I suggested that the KT63 should be used in 3-wire mode. THIS WAS WRONG and I have deleted my posts. I have since found the KEWTECH KT63 Operating manual that describes a 2-WIRE configuration for the test leads (Page 16) Basically join the Blue and Green leads together at the Probe/Croc-clip end. Also Note that the Operation Manual specifies on page 16 and page 18 to ONLY use the KT63 LOOP HIGH mode with a TWO WIRE configuration.
Hopefully not infringing any copyright here but I think this is necessary. KEWTECH KT63 Operating Manual pdf can be found here: docs.rs-online.com/63b7/0900766b8124513e.pdf
This video seriously misrepresents the time this thing takes to do a no-trip loop test. Each time you connect it to a circuit it needs to go through the pre-test (approximately as shown here from 1:11) before it will do a loop test. If you set it to "hands free" it will do the sequence automatically. Otherwise you need to press the test button in the middle of the process. Minimum 9 seconds from connection to getting a reading.