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
The tester the voltage and amperage rating must be higher than those of any equipment the tester will be use on
Use tools with appropriate ratings
If a Tester has internal fuses make sure the fuses meet the manufacturers specifications. Improper fuses can make the tool safe 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 certification by UL or other national recognized independent testing laboratories
Use double insulated tools
Quality testing to have saved design features like shrouded Connectors short probes tips nonslip handles and probes and fused ports
Look for safe design
Examine wire you leads probes and connectors for worn installation or any sign of damage. Check the case for cracks or other damage. Test internal fuses using the tester.Make sure the test the batteries have sufficient power
Inspect your tester
I’m busy doing this before a test in a circuit for power use the tester on us OK no to be alive to make sure the Tester is working.After using the Tester on a circuit you will be working on test the known live circuit again to confirm the Tester is still working properly
Test the tester
When testing with a ground chip secure the ground ship first and then make contact with the word probe to conduct the test. After testing remove the word probe first and then remove the ground clip
Use ground clip first and last
Always wear the appropriate Ppe For the job.Mini testing and measuring test call for flash section of various safety levels
Wear ppe
