Higher voltages require greater awareness of physical safety
hazards. When it’s possible to make clip-on connections to the
circuit under test, make the connections without power applied:
1. Turn off the power to the circuit under test.
2. Set the meter to the AC 600 Volt position.
3. Connect the test leads to the meter and then to the
circuit under test.
4. Reapply power.
5. Record measurement or adjust equipment as necessary.
6. Turn off power and disconnect test leads.
If any of the following indications occur during testing, turn off
the power source to the circuit under test:
• Arcing
• Extreme heat
• Flame
• Smell of burning materials
• Smoke
• Discoloration or melting of components
WARNING!
If any of the above conditions occur,
DO NOT
attempt to
remove the meter leads from the circuit under test. The
leads, meter, or circuit under test may have degraded to the
point that they no longer provide protection from the voltage
and current applied. If any of these erroneous readings are
observed, disconnect power immediately. Recheck the physical
condition of the test instrument, equipment and all settings
and connections.
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