1st Period Lab Meters & Safety GPRC

Incident energy levels are measured in cal/cm²

Which factors determine the severity of an arc flash?

Numerical displays are found on

An OL reading on a meter can indicate

PPE provides a physical barrier between the worker and the potential hazard.

___________mA is often fatal

Which meter CANNOT be used in an energized circuit?

Multimeters are capable of measuring different properties (voltage, current, resistance)

Megohmmeters are basically very large ohmmeters

You must ensure the meter you are using is rated to handle the voltage/current you expect to read

Good practice is to assume every circuit is live and act accordingly

Analog meters always use linear scales

Wattmeters have a voltage coil and an current coil

Safe limit of approach for an overhead power line is

An Ohmmeter measures

You must short out your leads on an ohmmeter prior to taking a reading

Ammeters have very high resistance

The red lead on a multimeter is positive and the black lead is negative

When locking out equipment it is ok to

Ohm's Law is

10mV is

Voltmeters have very high resistance

Downscale deflection on an analog meter indicates that the meter is connected with reverse polarity

Non-linear scales are typically found on

Arc flash events can cause temporary hearing loss and temporary blindness

Voltmeters measure

Arc Flashes cause ____% of workplace electrical deaths?

A DC voltmeter can be used on an AC circuit