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Posted to uk.d-i-y
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ELCB and Voltmeter
On 31/10/2019 18:57, wrote:
On Thursday, 31 October 2019 18:43:29 UTC, Alan wrote:
On Thu, 31 Oct 2019 18:10:27 +0000, John wrote:
A I liable to cause a trip by using a volmeter between live and earth -
to trace a circuit?
Yes.
Depending on what make/model of voltmeter.
A multimeter generally doesnt trip the RCD,as thye have avery high
impedance.
Some of the cheaper ones, even made by a 'decent' brand can cause the RCD
to trip, if the correct sequence is not followed.
The Fluke T100 would trip the RCD unless a L-N voltage reading is taken
first. No idea how it worked like that, but check your voltmeter manual
first.
even rock bottom $2 analogue multimeters are 1k/volt, on a 250v scale that's 1mA, less on a higher v scale. There's no way that's tripping an RCD unless it's right on the edge already, in which case you have a problem that needs sorting. And that tripping a voltage ELCB? No chance at all.
It has not been made clear if it is a voltage or current operated ELCB.
The OP may be using older terminology and meant RCD.
--
Adam
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