What is the overvoltage category for a tester?

Question: What is the overvoltage category for a tester?
Answer: Standards for safe and proper use of testers are classified as IEC standards, and are classified according to where the measurement target is.

CAT I: Secondary cable runs from a power supply transformer connected to a wall socket.
CAT II: Primary cable runs of power-consuming equipments from a wall socket.
CAT III: Primary cable runs of equipments directly connected to a distribution board and cable runs from a distribution board to wall sockets.
CAT IV: Cable runs from an incoming line to a distribution board.

Contact an agent directly

Find a local agent
Please contact our authorized agent in your country to be served.
If there is no agent in your country, please contact us by the web form at the right side.