Banana connector, 4 mm, exclusively for DC PSU and power transfer 20~35A

[Kiriakos GR]

This topic is here mostly for pointing the difference, between Banana connector 4 mm for measurements, and the Banana connector 4 mm for use at high current PSU.

These two types of male 4mm Banana connector, they are not designed to be used as equivalent to its other.
Female banana connector over a power supply this is a metal barrel.
Female banana connector over a DMM this is a plastic barrel with split terminals.

Due the fact that all female banana's connector over a DMM, they are fragile, we need to be very careful at DIY test leads.
For test leads, we need 4mm banana connectors these able to handle 15A as Max.
Such a male banana, will not have an extreme tight fit, but it will warranty a good electrical connection. 

Banana connector, 4 mm, exclusively for DC PSU and power transfer 20~35A
This is another class of 4mm banana connector, this by design it will have an extreme tight fit
Because this will warranty lossless transfer at the range of 20A up to 35A. 

Another description that I can use, this is cable harness exclusively for DC power supply, and or cable harness for DC programmable load.
At DC programmable load, they have stop using 4mm banana connectors, and therefore there is no room for mistake there.

In conclusion, if you were thinking DIY and of getting Banana connector 4 mm ?
You must decide using two sources.
Your best choice for electrical T&M test leads.
AND
Your best choice for DC PSU and power transfer 20~35A cable harness.

And the most important tip, never use such cable harness as test leads