Compliance Info
rmation
Installation & Measurement (Overvoltage) Category Descriptions
Terminals on this product may have different installation or measurement (overvoltage) category designations. The
installation and measurement categories are:
Measurement Category IV. For measurements performed at the source of low-voltage installation.
Measurement Category III. For measurements performed in the building i nstallation.
Measurement Category II. For measurements performed on circuits directly connected to the low-voltage installation.
Measurement Category I. For measurements performed on circuits not directly connected to M AINS.
THDP0100/0200 & TMDP 0200 High Voltage Differential P robes Instruction Manual vii