Colleagues, what's the difference, what the cable is made of - if even copper can have a small diameter.
I will tell my friends honestly that I have dealt with testing the cables and microUSB power supplies for the purpose of powering the Raspberry Pi 3 (current consumption max. 2.5 A, low voltage alarm at 4.75 V). All USB-microUSB cables can be removed, they share the space of the power wires with the data wires., Most power supplies of various production could not cope with RPI power supply due to too thin wires in the cable - to the extent that one of the power supplies gave a voltage of 5, 4 V just to have a "spare" - it was constructed this way, but it is a digression. Of course, I conducted voltage drop tests on load and ammeter + voltmeter.
Any connection of the power supply with a USB cable (with data wires) ended in a significant voltage drop on the cable. We're talking about max 1.8m cables, and a colleague tries with a 3-meter Oo
The only two solutions that worked well with Raspberry - is a Polish power supply, some random Extreme with an integrated cable (I cut it - there were two, beautiful, copper) and a K&M plug-in power supply with detachable microUSB cables (cable without USB communication function, only for power supply).
Buddy, my friend has a difficult matter. Providing any company as a good one will not do anything - because maybe it just invested in ferrite filters, a thicker insulator or even shielding - and it could let off the diameter of the power wires.
If your colleague is able to solder - I would recommend here - buy the plugs: USB, microUSB and the right amount of solid two-wire cable with the least AWG (and good flexibility).
If a colleague necessarily wants to buy a ready-made wire, then I advise you to suggest external thickness, there is no certainty that it will translate into the thickness of the veins - but the chance is. You definitely should not buy flat cables.
