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Do-It-Yourself (DIY) Question & Answer Forum
Direct measurement of Zs
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<blockquote data-quote="Harvey" data-source="post: 129394" data-attributes="member: 6278"><p>Question from Exam Success in Inspection and Testing 2391-10-the IEE Citry and Guilds-</p><p></p><p>Describe briefly how to carry out,by direct measurement an earth loop impedance test on the workshop lighting circuit.</p><p></p><p>Answer-</p><p></p><p>Secure safe area ariund last luminaire on the circuit</p><p></p><p>use earth loop impedance tester</p><p></p><p>leads to gs38</p><p></p><p>furthest point in circuit test between switched line and cpc</p><p></p><p>with circuit energised test and record result</p><p></p><p>reinstate the luminaire</p><p></p><p>This is surely against EWR 1989 working on live circuit ?</p></blockquote><p></p>
[QUOTE="Harvey, post: 129394, member: 6278"] Question from Exam Success in Inspection and Testing 2391-10-the IEE Citry and Guilds- Describe briefly how to carry out,by direct measurement an earth loop impedance test on the workshop lighting circuit. Answer- Secure safe area ariund last luminaire on the circuit use earth loop impedance tester leads to gs38 furthest point in circuit test between switched line and cpc with circuit energised test and record result reinstate the luminaire This is surely against EWR 1989 working on live circuit ? [/QUOTE]
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Direct measurement of Zs
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