Is the market flooded with fake dangerous solar cable

[Robint]

Originally Posted by GordMay

FWIW:
Cable diameter to circle cross-sectional area and vice versa


A 6.0 mm2 Cross Section wire has a Conductor Diameter of 2.8 mm Nominal [2.764mm actual].

Quite correct Gord as every school kid would know 2.764mm dia single strand = 6mm2csa

[Robint]

Originally Posted by Wotname

Presumably the double negative was unintentional. Whoops sorry big Corps my typo there
Hopefully from the samples they will be able to determine what is going on. Keep up the good work.

Doing what I can. An associated problem with undersized cable is get copper tube type crimp ring terminals to grip properly. These fake 6mm cable need a 4mm crimp lug - and then some serious muscle to take up the slack. Even then I dont trust the joint and resort to a bit of soldering. What a pain that is on a boat.

[Robint]

I just had to post this - how to disconnect a solar panel on a sunny day
https://www.youtube.com/shorts/hF9gZ...?feature=share


Kinda brings home my point. This must have been at least 48V ca 100 A


See what you can be dealing with


Note the vertical cable is the worst case as the arc flash extends upwards. Horizontally the flash will arc upwards like a rainbow and create a widening separation (eg like a Jacobs Ladder effect).


Ive got a Current source MMA welder now and can do 100A ca 28V so I hope to set up some tests to show the Arc flash issue and the need for separation distance (also I want to try my plant water mister to see how it extinguishes the flame - havent found this mentioned anywhere and Welders are too pussy to take up the challenge