At our recent Brisbane Toolbox we discussed and demonstrated the all-important task of Test Before You Touch. One aspect we focused on was confirming the test instruction is working correctly using a voltage proving device.

A proving device, is a device that can produce a low energy voltage to prove a voltage test instrument is functioning correctly.  By utilising a proving device, the electrical risk is low as the proving device will limit the potential electric shock hazard to a safe level, and completely eliminate the risk of an arc blast.

When purchasing a proving device, look for:

  • Shrouded (IP2X) test points, for contact with of test instrument probes;
  • Indicates low battery capacity;
  • Limits the output to 10 Watts;
  • Generates a voltage of 50Hz;
  • Has capability to test both direct contact and non-contact voltage indicators