Chapt 4 Electrical Measurment And Testing. Equipment Flashcards
One of the most important tools for preventing electrical shock is a
Voltage tester
Indicate Whether Voltage is present in a circuit
Voltage tester
Is a tool that uses indicator lights or a digital Read out to report the amount of voltage present
Digital voltage tester
This tester Draws very little current from the circuit
Digital voltage tester
Uses a higher. Amount of current to activate the tester’s solenoid Which indicates the presents of voltage.
Solenoid voltage tester
Little more than a neon light attached to two conductive leads
Circuit tester or neon circuit tester
Is shaped like a pen has a tip the light when it is Place near a or Terminal carrying voltage
Noncontact voltage tester
Is a compact one piece tester that has three prongs to plug-in into a standard voltage 120 V receptacle
Receptacle tester
This versatile tester Also known as a VOM ______ Comes in a variety of configurations and prices The simplest models test for several electrical properties including voltage current resistance and continuity.
A multimedia
Displays the measurement on a digital readout
Digital multimeter
Is recognizable but is multi scale displayed with a needle that Rotates from left to right
Analog multimeter
A clam on ammeter Is a commercial grade tester for measuring high levels of current and voltage and a range of other properties
Clamp meters
Installation resistance tester megohmmeter or Simply meggie His juice for testing the resistance value of wire or cable insulation
Insulation tester
Assess the resistance of the earth surrounding a grounding electrode Such as a ground rod
Earth ground tester
Maintenance electrician use _____ To determine Moto rotation direction and to check the phrase sequence of a motor power supply (feed) wires
Phase and motor rotation testers
Most earth ground testers can employ a few different testing methods. The method do you use most commonly for a single residential ground rod is
Fall of potential
Doing new construction a electrician me conduct a _____ Tess to determine a suitable location for installing a new ground rod
Soil resistivity
The testers voltage and amperage rating must be higher than those of any equipment the tester will be used on
Use Tools with appropriate rating
If a tester has internal fuses make sure the fuses meet the manufacture specification.Improper fuses can make the tool on the unsafe
Verify fuse ratings
This should be indicated by the universal symbol showing a small square inside of a large square. Tools also should carry certifications by UL or other nationally recognized independent testing laboratories
Used double insulated tools