Key Takeaways
The stream of electrical current is valuate by placing an electric examiner at two point in the electric circuit . A voltage tester is the simplest of these tools . It consist of a diminished atomic number 10 medulla with two insulated wires tie to the bottom of the bulb caparison ; each wire end in a metal mental testing investigation . This type of examiner is always used with the current turned on to determine whether there is current flowing through a conducting wire and to quiz for right grounding . It is also used to settle whether tolerable voltage is present in a wire . Look for a tester fink for up to 500 volts .
To use a voltage quizzer , pertain one investigation to one telegram or connection and the other investigation to the opposite wire or link . If the component is find electricity , the lightness in the housing will glow . If the luminance does n’t beam , the trouble is at this pointedness . For example , if you distrust an electrical outlet is faulty , inclose one probe of the tester into one slot in the electric outlet and the other probe into the other slot . The light in the examiner should illuminate . If it does n’t , the electric receptacle may be bad .
To further test the wall socket , pull it out of the wall . Place one probe of the tester on one terminal screw connection and the other investigation on the other terminal screw . If the examiner bulb lights , you sleep together the outlet is malfunctioning – there is current menstruate to the outlet , but it is n’t flow through the outlet to render power to the appliance plugged into it . If the test bulb does n’t illume , there is no current fall into the outlet . The problem may be a blown fuse or spark off circuit breaker , or the telegram may be disconnect or reveal behind the electric outlet .
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