# Plasma arc-voltage polarity with a multimeter

- Source-Date (SAST): 2023-08-05 13:02
- Dest: both
- Review-after: 2027-02-28
- Status: current

## Facts

- On a plasma power unit, determine arc-voltage signal polarity with a multimeter continuity check.
- Positive (+) continues with the earth clamp.
- Negative (-) continues with the electrode inside the torch.