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Safe electrical isolation check before servicing boiler
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<blockquote data-quote="binky" data-source="post: 422513" data-attributes="member: 490"><p>assumes boiler is on a plug, which it shouldn't be.</p><p></p><p>Pen tester, or rough voltage indicator is a more accurate description, is only a rough test for voltage being present, ie cabling may be live. These can easily be confused by other live equipment being in close proximity.</p><p></p><p>Socket tester - some have an indication of Zs built in, but most don't. These are more for checking polarity and presence of a live earth and neutral. Fairly meaningless and only useable with a socket.</p><p></p><p>What you should be using is Voltage Probes to confirm electrical supply is dead to the boiler. They should also be teaching basics like switching circuit off at the Consumer Unit, and removal of fuses at a fused spur whilst working on boiler to prevent accidental re-energising.</p></blockquote><p></p>
[QUOTE="binky, post: 422513, member: 490"] assumes boiler is on a plug, which it shouldn't be. Pen tester, or rough voltage indicator is a more accurate description, is only a rough test for voltage being present, ie cabling may be live. These can easily be confused by other live equipment being in close proximity. Socket tester - some have an indication of Zs built in, but most don't. These are more for checking polarity and presence of a live earth and neutral. Fairly meaningless and only useable with a socket. What you should be using is Voltage Probes to confirm electrical supply is dead to the boiler. They should also be teaching basics like switching circuit off at the Consumer Unit, and removal of fuses at a fused spur whilst working on boiler to prevent accidental re-energising. [/QUOTE]
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