Trotting back to the subject of test leads to use with power supplies, I've picked up a few batches of these:
![](https://www.eevblog.com/forum/testgear/test-equipment-anonymous-(tea)-group-therapy-thread/?action=dlattach;attach=778173;image)
from a vendor on ebay going by the handle casuntek. Here's a listing for them on ebay UK:
https://www.ebay.co.uk/itm/5x-4mm-Stackable-Banana-Plug-Wire-Soft-Silicone-Test-Cable-for-Multimeter-1m/232879053961?hash=item3638ac5c89:g:3MoAAOSwQ9ldCMPE.
I bought one lot as a trial order (from an earlier, slightly cheaper listing) some time back and I've been back for more since. Thanks to one of them having a fault (a missing lantern spring) which was sorted out quickly and painlessly by the vendor, I had one cable I could dismantle. Good quality cable, proper copper, lots of cores (55 from memory), generally well made. Good insulation that certainly feels like silicone rubber and strain relief done properly for once. Nominally 15A, 1000V rated, I'd recommend them to anyone who needs some cheap test leads and isn't looking for low-thermal metrology grade.
Anyway, with the mention of horrible voltage drops on leads earlier I though I'd give them a proper 4 wire resistance measurement with my most recent TEA score:
![](https://www.eevblog.com/forum/testgear/test-equipment-anonymous-(tea)-group-therapy-thread/?action=dlattach;attach=778179;image)
End to end resistance 0.02445 ohms - perfectly respectable. Oh, yes, that
is from an Agilent 34461A; and yes, I
am sliding down the slope towards volt-nuttery.
The 34461A was scored for a very reasonable £525 a couple of weeks back - so it looks like these are starting to turn up on the secondhand market for sane money. Finally gave up on the hunt for a reasonably priced 34401A and grabbed the 34461A for around £150 more than most good condition 34401As seem to go for. Pristine condition and I get a fancy screen, and an LXi ethernet port and USB to talk to instead of the 34401A's rather awkward GPIB.
So, now I can use a Weston Cell to find out quite how hot it is at the moment. The bonus is that I now have AC measurement good enough to calibrate/verify (at least up to 300 kHz) the HP 3325A sig gen I got a few weeks back. I can get the rest of the frequency range verified, at least to within my comfort zone, by doing some juggling with ratios on the 'scope.
No pictures as I'm feeling too hot and lazy to snap any at the moment but trust me, it looks like it came out of the factory - minus the annoying 'give us your details and you could win...' stickers.
Forgot to say, it came with the handle, all the bumpers and an unused original probe kit.