Welding supply

Field notes in this sector

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  Welding supply

  The welder is not the only thing transmitting

  2026-11-07 · By Alice

  The interference on a welding site is blamed on the arc and carried by the conductor the welder shares with everything else. Two switching sources in one cable bundle turn a thirty-metre run into an antenna, and a separate output separates what a filter can only mask.

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  Welding supply

  The joint is hot before the first arc

  2026-11-02 · By Jocelyn

  On a coded weld the preheat pads draw before the arc does, and the interpass window keeps them running after it stops. The schedule, not the welding current, is what the unit has to cover.

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  Welding supply

  A clamp on painted steel routes 200 A through the frame

  2026-11-04 · By Zack

  The return lead carries the same 200 A as the electrode holder. Where the clamp sits decides whether the weld, a bearing or a sling gets the current.

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  Welding supply

  Welding in a building with no live supply: the decision is placement, not size

  2026-10-13 · By Zack

  In fit-out and refurbishment work the building's own supply is usually switched off, and no engine can run in an occupied room. That turns the welding power question into a placement decision before it ever becomes a sizing one.

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  Welding supply

  Three-phase welding without a generator

  2026-09-25 · By Billy

  A 160–200 A inverter welder needs 400 V and a starting surge. That is a specification, not an obstacle — and peak output, not continuous output, is the number that decides it.