In its clamp meter product manuals, Fluke offers the following safety guidelines to help users avoid electrical shock or personal injury:
- Use the meter only as specified in this manual. Otherwise the protection provided by the meter can be compromised.
- Examine the case before you use the meter. Look for cracks or missing plastic.
- Carefully look at the insulation around the connectors.
- Never measure current while the test probes are inserted into the input jacks.
- Make sure the battery door is closed and latched before operating the meter.
- Remove the test probes from the meter before the battery door is opened.
- Examine the test probes for damaged insulation or exposed metal. Check test probe continuity. Replace damaged test probes before using the meter.
- Do not use the meter if it operates incorrectly. Protection can be compromised. When in doubt, have the meter serviced.
- Do not use the meter around explosive gas, vapor or in damp or wet environments.
- Use only the specified battery type, properly installed in the meter case, to power the meter.
- When measuring current with the meter's Jaw, keep fingers behind the tactile barrier.
- To avoid false readings that can lead to electrical shock and injury, replace the batteries as soon as the low-battery indicator
appears. - When servicing the meter, use only specified replacement parts.
- Have the meter serviced only by qualified service personnel.
- Be careful around voltages > 30 V ac rms, 42 V ac peak, or 60 V dc. Such voltages pose a shock hazard.
- Do not apply more than the rated voltage, as marked on the meter, between the terminals or between any terminal and earth ground.
- When using the probes, keep fingers behind the finger guards on the probes.
- Connect the common test probe before connecting the live test probe. When disconnecting test probes, disconnect the live test probe first.
- Do not work alone so assistance can be rendered in an emergency.
- Use extreme caution when working around bare conductors or bus bars. Contact with the conductor could result in electric shock.
- Adhere to local and national safety codes. Individual protective equipment must be used to prevent shock and arc blast injury where hazardous live conductors are exposed.
- Disconnect circuit power and discharge all high-voltage capacitors before you measure resistance, continuity, or capacitance.
- Know your meter. For example, for the Fluke 374 and 375, do not measure ac/dc current in circuits carrying more than 1000 V or 600 A with the meter jaw.
- For the Fluke 376, do not measure ac/dc current in circuits carrying more than 1000 V or 1000 A with the meter's jaw.
- Never operate the meter with the back cover removed or the case open.
- Check your manual for specific restrictions. For some models, do not measure ac current in circuits carrying more than 1000 V or 2500 A with a flexible current probe.
- Do not apply a flexible current probe around or remove from HAZARDOUS LIVE conductors.
- Do not use the flexible current sensor if the inner contrasting insulation color is showing.
- When using a flexible current probe, take special care while fitting and removing the probe. De-energize the installation under test or wear suitable protective clothing.
appears.