I had ran a few tests ahead of running the probes. I calibrated the voltage using the Fluke reference. The shunt used was decent. Then I showed the setup with the UT210E. I am also fairly confident that the majority of the loss was in the test leads cables and not the 6 AWG cables or my connections. Of course there will be errors but my goal was really to try and test them the same and compare results..
So like you, not only was I also very surprised just how far I could push some of the test leads, I am also confident in the numbers I was throwing up.
Seeing that very old Fluke lead holding 60A for that length of time was very impressive! 70Amps to finally fuse it! And this is why you want a fused meter and don't want to put the wrong fuse or worse, defeat your fuse even if they do cost a few dollars each! Better than burned hands!
As always, there were some mistakes during the video but the obvious one was I show the gray Mastech probes were the best, not the plain black and red. Too much sun.
Without knowing anything about the wire they used, its pretty hard to say anything about the resistivity. Below, the brand, overall length, wire insulation OD, Resistance at 4A, Gold Plate
CENTECH, 32", 0.02", 0.375
Agilent, 55", 0.05", 0.047
Fluke (101), 55", 0.05", 0.047
HIOKI, 43", 0.04", 0.043, gold
AMPROBE, 42", 0.04", 0.041
Brymen, 46", 0.045, 0.033, gold
KLEIN, 41", 0.045", 0.150
Mastech (plain), 40", 0.04", 0.074
VICI, 42", 0.042", 0.084
Mastech (gray), 41", 0.04", 0.026
ProbeMaster, 46", 0.04", 0.031, gold
Not the fry up that I would have expected with any of the cheap leads and that most withstood up to 20A or more is staggering.
Joe, did you do any probe lead length comparison that could have affected Vdrop results ?