TEC ARC MMA/GOUGING Welding Machines DC250E / 300E / 400E / 500E CC WELDING POWER SOURCES The DC 250E-500E range are designed & manufactured in the UK using a conventional large copper wound transformer & rugged thyristor technology. Simple construction with minimal parts means unbeatable long term reliability even in the most demanding environments. Arc welding characteristics are good with easy arc striking, a smooth stable arc & automatic compensation for long cables and fluctuating input voltage. All models can be also used for TIG & a full function DC TIG box is available, the DC500E is also suitable for light to medium duty arc air gouging.