Test Meters
Proving dead is a three step job and it needs the right instrument: prove the tester works on a known source, test the circuit, then prove the tester again. A meter that failed silently between the second and third step is the reason the third step exists.
Category rating matters as much as the voltage range. A meter rated CAT II is not suitable for this work regardless of what number it can display.
6 products
Digital Infrared Laser Thermometer
Non contactLaser sighting
Thermal Imaging Camera with Recording
Thermal imagingRecording
CAT III Voltage Tester, 1000V
CAT III1000VTwo pole
Milliohm Meter
Low resistanceBonding checks
CAT III Multimeter, 1000V
CAT III1000V
CAT III Multimeter and Insulation Tester, 1000V
CAT III1000VInsulation test
Common questions
What CAT rating do I need for EV work?
CAT III as a minimum for traction system work, and CAT IV where the risk assessment calls for it. The rating describes how much transient energy the meter can survive, which is a different question from the voltage it can read.
Why do I need a separate proving unit?
Because a dead reading and a broken meter look identical. A proving unit gives you a known live source to confirm the meter still works immediately after you have used it to declare something dead.