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Do-It-Yourself (DIY) Question & Answer Forum
Voltage drop from 240 to 125
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<blockquote data-quote="SPECIAL LOCATION" data-source="post: 547414" data-attributes="member: 250"><p>A typical DIY multimeter is not an industry recognised suitable tester to verify the presence, or absence, of any mains AC voltages. </p><p></p><p>If you do not know how to test a poor neutral I am also wondering how you have verified that your earth reference is good?</p><p></p><p>It is quite possible some of your readings are incorrect due to unsuitable testing methods?</p><p></p><p>For testing what voltages are present I would use a two-pole voltage tester..</p><p>various brands are available, e.g.</p><p><a href="https://www.screwfix.com/p/kewtech-kt1780-ac-dc-two-pole-voltage-tester-690v/53370" target="_blank">https://www.screwfix.com/p/kewtech-kt1780-ac-dc-two-pole-voltage-tester-690v/53370</a></p><p><a href="https://www.screwfix.com/p/di-log-combivolt2-ac-dc-2-pole-digital-voltage-continuity-tester-690v/738jp" target="_blank">https://www.screwfix.com/p/di-log-combivolt2-ac-dc-2-pole-digital-voltage-continuity-tester-690v/738jp</a></p><p><a href="https://www.toolstation.com/tis-851-voltage-continuity-tester-self-proving/p51437" target="_blank">https://www.toolstation.com/tis-851-voltage-continuity-tester-self-proving/p51437</a></p><p>etc..</p><p></p><p>However I would want to check continuity of all conductors, insulation resistance and the earth loop impedance of the circuit to ensure it is electrical safe, rather than just testing for voltages.</p><p></p><p>It is probably best to get some professional help to ensure it is all correctly tested.</p></blockquote><p></p>
[QUOTE="SPECIAL LOCATION, post: 547414, member: 250"] A typical DIY multimeter is not an industry recognised suitable tester to verify the presence, or absence, of any mains AC voltages. If you do not know how to test a poor neutral I am also wondering how you have verified that your earth reference is good? It is quite possible some of your readings are incorrect due to unsuitable testing methods? For testing what voltages are present I would use a two-pole voltage tester.. various brands are available, e.g. [URL]https://www.screwfix.com/p/kewtech-kt1780-ac-dc-two-pole-voltage-tester-690v/53370[/URL] [URL]https://www.screwfix.com/p/di-log-combivolt2-ac-dc-2-pole-digital-voltage-continuity-tester-690v/738jp[/URL] [URL]https://www.toolstation.com/tis-851-voltage-continuity-tester-self-proving/p51437[/URL] etc.. However I would want to check continuity of all conductors, insulation resistance and the earth loop impedance of the circuit to ensure it is electrical safe, rather than just testing for voltages. It is probably best to get some professional help to ensure it is all correctly tested. [/QUOTE]
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Voltage drop from 240 to 125
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