International Safety Symbols - Extech Instruments 382357 User Manual

Introduction
Congratulations on your purchase of Extech's 382357 Ground Resistance Tester. This Clamp‐on
device allows the user to measure ground resistance without the use of auxiliary ground rods.
This device can only be used on multi‐grounded systems. It is not necessary to disconnect the
ground under test. This meter is shipped fully tested and calibrated and, with proper use, will
provide years of reliable service. Please visit our website (www.extech.com) to check for the
latest version of this User Guide, Product Updates, and Customer Support.
Safety
 Only qualified technicians should operate this meter.
 Use extreme caution when operating the meter near energized electrical equipment.
 Do not attempt to use this meter to twist or pry the ground electrode or ground wire away
from grounded equipment.
 All metal objects or wires connected to the electrical system under test should be assumed
to be lethal until tested. Grounded systems are no exception.
 Ensure that the batteries are inserted correctly in the battery compartment.
 Remove the batteries from the meter if the meter is to be stored for long periods.
WARNING: If the meter is used in a manner not specified by the manufacturer, the built in
protections provided by the meter may be impaired.
International Safety Symbols
This symbol, adjacent to another symbol or terminal, indicates the user must
refer to the manual for further information.
This symbol, adjacent to a terminal, indicates that, under normal use, hazardous
voltages may be present
2 382357‐EU‐EN V2.4 2/13