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UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
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#41
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How small a gap can a mouse get through?
In article , Andy Wade
writes ARWadsworth wrote: Explain what "proving dead" is please. The mouse certainly was in my opinion but I am not a vet. That process of checking that conductors or equipment that you are about to work on and that you /think/ you've isolated *really* is dead. A proper formal procedure (e.g. to comply with the EAW regs) involves using a test lamp or voltage indicator and proving that the indicating device itself is working both before and after the test. Plenty of hits on Google, e.g. http://www.niceic.org.uk/approved/elecatwork.html We used a thing called an earth stick when I worked with TV transmitters 15 off kV at serious currents. Lotsa charged capacitors that would regain a bit of charge. One bloke thought he had gone through the "SIDE" routine Switch off, Isolate, Dump the capacitor charge, and Earth Except the Isolate weren't done and someone as a temp measure had inadvertently bypasses the switches. A most amazing BANG!!! Gave the poor sod such a fright and the rest of the factory some amusement.... -- Tony Sayer |
#42
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How small a gap can a mouse get through?
The message
from tony sayer contains these words: We used a thing called an earth stick when I worked with TV transmitters 15 off kV at serious currents. Lotsa charged capacitors that would regain a bit of charge. Ah yes, that's a nasty habit of capacitors, isn't it. TV tubes can do the same. You earth the HT nipple on the side, then a few minutes later the sodding thing's live again - you know this 'cos it's given you a heck of a belt. -- Skipweasel Pay no attention to that man behind the curtain. |
#43
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