Wavecom TnT ELB G4-Series User Manual page 18

Wavecom Instruments Portable Appliance Testers Instruction Manual
Electrical parameters are displayed as Volts, Amps, Watts, and Volt / Amps
These electrical parameters will be displayed on the Testers main screen display. Select from the 4 Test available
in Meter Mode.
Meter Mode Measures and displays volts in AC, Current in Amps, Power Measurement in Watts and VA in
Volt/AMPS
Explanation of Electrical Parameters
Volts

A volt is the unit used to measure the energy available in the electrical current of a circuit. Voltage controls
the available electrical power (wattage).
Amperes
An amp is the unit used to measure electrical current as it flows past a specified point.
Watts

A watt is the unit used to measure the amount of actual flowing electrical energy.
Volt-Amps

A volt-amp is the unit used to measure the apparent electrical power used by computing equipment.
Mathematically, it is expressed as volts times amps (V*A).
*Meter Mode ® is a unique function of all TnT Gen 4 Models.
Uses of Volt-Amp Measurement

Because it represents the amount of energy computing systems may draw from a power grid, the VA is
used to determine the kind of wiring and circuit breakers required to support the computing equipment in
question.
Watts and VA (Detailed Explanation)
The power drawn by equipment is expressed in Watts or Volt-Amps (VA). The power in Watts is the real power
drawn by the equipment. Volt-Amps are called the "apparent power" and are the product of the voltage applied to
the equipment times the current drawn by the equipment. Both Watt and VA ratings have a use and purpose. The
Watt rating determines the actual power purchased from the utility company and the heat loading generated by
the equipment
Safety Precautions
Make sure you have a clear and safe area when powering any equipment, remove any drills bits etc before testing
any equipment. Always read equipment compliance plates.
Disclaimer
Meter Mode is to be used for quick simple indicative electrical parameter measurements. Providing reasonably
accurate readings without the need to carry any other instruments. It is not intended to replace specific, more
accurate individual test equipment, nor is its purpose to replace prescribed testing requirements. It in doubt please
consult a qualified electrician when unsure or perform proper test procedures.
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