Extech 382252 Earth Ground Meter - Measures Ground Resistance & Voltage

The Extech 382252 is an earth ground meter designed to measure ground resistance and voltage, primarily used by electrical professionals for installation and inspection to ensure safety and proper grounding.

The meter offers three selectable ranges for ground resistance: 20 Ω, 200 Ω, and 2000 Ω.

Yes, the Extech 382252 can measure AC and DC voltage in the range of 0 to 200V.

The meter is powered by 6x AA batteries.

CAT III indicates that the meter is designed for safety when making measurements in building installations, such as on distribution panels, circuit breakers, and fixed motor installations.

The Extech 382252 is a kit that contains the necessary components required to measure ground resistance, typically including the meter, test leads, and auxiliary ground spikes.

Refer to the user manual for the specific procedure, but generally, it involves placing the meter in a ready state and pressing a designated 'zero' button before taking measurements.

Ensure 6 AA batteries are installed correctly with proper polarity. Check battery contacts for corrosion. If batteries are old, replace them with new ones.

Verify that all test leads and ground spikes are securely connected. Ensure auxiliary ground spikes are properly seated in the earth and spaced according to the manual. Check for environmental factors like extreme dryness or moisture affecting ground conductivity. Perform an automatic zero setting before measurement.

This indicates a reading exceeding the selected range. Switch to a higher resistance range (e.g., from 200 Ω to 2000 Ω) or check for open circuits or poor connections.

Ensure the meter is set to the correct AC or DC voltage measurement function. Verify the test leads are connected to the correct voltage source terminals and not the ground resistance terminals.