In Reply to: lincoln sa 750 diagrams posted by chris on 08/05/03 at 8:34 PM:
My diagrams don't show a Lincoln SA750 anywhere.
Your idea is dumb, as your existing transformer was never set up to be power for a welder.
Simply put the secondary coils are far too small to take any kind of load, ie, you'll need a 40 amp breaker just to start a 1/8" AC rod off a 230/120 10KVA tx. That load will probably start to smoke the varnish off the tx.
Perhaps if you had a stabilizer and rectifier, you could cool things off somewhat.