Test Instrument Safety - Goldstar A0-3001C Operator's Manual

Test Instrument Safety
WARNING
Normal use of test equipment exposes you to a certain amount of danger from
electrical shock because testing must often be performed where exposed voltage
is present. An electical shock causing 1 0 milliamps of current to pass through the
heart will stop most human heartbeats. Higher voltages pose an even greater
threat because such voltage can more easily produce a lethal current.
However. voltage as low as 30 volts DC or AC RMS should be considered
dangerous and hazardous since it can produce a lethal current under certain
conditions.
Your normal work habits should include all accepted practices that will prevent
contact with exposed high voltage, and that will steer curcuit away from your
heart in case of accidental contact with a high voltage you will significantly reduce
the risk factor if you know and observe the following safety precautions:
1. Don't Expose High Voltage needlessly. Remove housing and covers only when
necessary. Turn off equipment while making test connections in high voltage
circuits.
2. Use an insulated floor material or a large insulated floor mat to stand on, and an
insulated surface on which to place equipment : And make certain such surfaces
are not damp or wet, where insulated floor surface is not available. wear heavy
gloves.
3. On test instruments or any equipment with a 3-wire AC power plug, use only a
3-wire outlet. This is a safety feature to keep the housing or other exposed
elements at earth ground.
4. If possible familiarize yourself with the equipment being tested and the location
of its high voltage points However. remember that high voltage may appear at
unexpected points in defective equipment.
5. Also remember that line voltage is present on some power input circuit points
such as on-off switches, fuse. power transformers. etc., Even when the
equipment is turn off.
6. Never work alone. Someone should be near by to render aid if necessary. First
aid training is highly recomended.