Oil cooled Welder.

Bury the Trash

Member
Mixed Farmer
Has anyone got a Pickhill Bantam ( 180 amp) or Oxford so they could advise me how to rewire the mains in wires to use it again ..
If anyone has a wiring diagram or something :unsure: tia.
 

Mur Huwcun

Member
Livestock Farmer
Location
North West Wales
Post a photo of the pins in the box, they should be marked with numbers like 220/240, 380 etc. Earth wire be the middle pin that holds the lid on and neutral should be marked
 

Bury the Trash

Member
Mixed Farmer
Single or three phase?
single .
Post a photo of the pins in the box, they should be marked with numbers like 220/240, 380 etc. Earth wire be the middle pin that holds the lid on and neutral should be marked
got a pic i just want to be sure as i'm no technical electrician
will it simply be live on the 240 one, neutral on the 0 and earth in the middle ? :unsure:
20220205_103843.jpg
 

Netherfield

Member
Location
West Yorkshire
If you're on single phase 240v then put neutral wire to the 0 terminal, Live wire to the 240 terminal, earth to the central post which holds the lid on.

If you're on three phase, put one of the phases to 0 terminal and another phase to the 415 terminal, and again earth to the centre post.

NOTE that although it's termed three phase you're actually only using two of the phases on this job.







P.S. get a wire brush and clean the terminals up to make a good contact.
welder.jpg


Single phase look like this.
 
Last edited:

Bury the Trash

Member
Mixed Farmer
got it going and had a faff around ....:oops:..first time for many yrs not sure really if it was worth it didnt like 4mm rods on 5mm steel which me inverters would've been fine with.
20220206_170713.jpg

boy have welders moved on...
 

2wheels

Member
Location
aberdeenshire
we had a oxford 180 on 3phase, it was quite happy with 4mm rods. mind you it's 14 yrs since i did any welding. on the output selector try turning down the voltage and upping the amps? or is my memory going. :)
 

Bury the Trash

Member
Mixed Farmer
we had a oxford 180 on 3phase, it was quite happy with 4mm rods. mind you it's 14 yrs since i did any welding. on the output selector try turning down the voltage and upping the amps? or is my memory going. :)
that was on 180 amps and on the low volt setting.local blacksmiths had 2 oxfords wired together in tandem.. not sure if that meant together they were 360 amps :oops: too long ago to remember
 

dave mountain

Member
Livestock Farmer
If you're on single phase 240v then put neutral wire to the 0 terminal, Live wire to the 240 terminal, earth to the central post which holds the lid on.

If you're on three phase, put one of the phases to 0 terminal and another phase to the 415 terminal, and again earth to the centre post.

NOTE that although it's termed three phase you're actually only using two of the phases on this job.







P.S. get a wire brush and clean the terminals up to make a good contact.View attachment 1014674

Single phase look like this.
and 3 phase is this:
1644400652911.png
 

dave mountain

Member
Livestock Farmer
Good grief no! o_O
Those are only tappings on one side of the primary.

If its a 3-phase supply, just use one phase. 0 to 415 or 0 to 240 depending on supply voltage.
He's got it working on single phase 240 now anyway :) (y)

Alec.
Good grief no! o_O
Those are only tappings on one side of the primary.

If its a 3-phase supply, just use one phase. 0 to 415 or 0 to 240 depending on supply voltage.
He's got it working on single phase 240 now anyway :) (y)

Alec.
Clearly different to the Oxfords then, how could you have a 415v supply that isn't 3 phase? Peak voltage is 440v for both single and 3 phase, just the RMS voltage that differs, 230 for single phase and 415 for 3 phase
 

Rangie

Member
Location
Caithness
Clearly different to the Oxfords then, how could you have a 415v supply that isn't 3 phase? Peak voltage is 440v for both single and 3 phase, just the RMS voltage that differs, 230 for single phase and 415 for 3 phase
Just use the "415" from across two phases of a conventional star or from across a high delta.
Lots of older welders, ie Pickhills, BOCs, Philips, Rowan-Arcs etc were "single phase" units and just used one of the phases from the three phase supply to power them.
You still got dedicated 3-phase units of course, some Pickhills, Oxfords, Quasi-Arcs etc.
Just got to be careful (y)
 
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