I tried to on you but my prehistory phone had different ideas, it's arrived today, to say ime chuffed is a understatement!!Black, brown and blue on that welder are all lives so they can go to any L pin.
Bob
Colours are wrong for 3 phase, they've used a 3 core and earth single phase cable. 3 phase is usually
earth - green/yellow,
neutral (if it has one) - blue,
L1 - brown,
L2 - black,
L3 - grey,
or old colours
L1 - red,
L2 - yellow,
L3 - blue,
neutral - black
Earth - green/yellow
I've definitely got some old red yellow blue flex here on a pedestal grinder or something..?
As for the fan, will it not be 24v or single phase run from 2 phases? Don't think it'd be 3 phase for such a small motor.
Good point lack of sleep is my excuse!You don't get single phase from 2 phases, you get full 400v! To get single phase 230v you go across 1 phase & a neutral but there's no neutral in the cable of the welder.
I'll have to correct you there, the old colours for 3 phase 4 core flex were black, blue, brown, green/yellow. I've never seen red, yellow, blue flex, only solid core cable.
To the op- the only problem you might have if you get the phase connections wrong is that the cooling fan might run the wrong direction.
You forgot Red, White and Blue used up'til 14th edition or maybe end of 13th edition so early 60's.UK three phase correctly wired was always RYB and G or GY for earth. <snip>
UK three phase correctly wired was always RYB and G or GY for earth.