Discuss Anyone have any ideas on how to remove a live broken screw from a meter in the Electrical Forum area at ElectriciansForums.net

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Anyone got any ideas on how to get a live broken screw out of a meter?
 

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pc1966

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You can get screw extractors like this:
https://uk.rs-online.com/web/p/screw-extractors/7798842/
However, aside from the obvious aspect of safe isolation before working on it, in practice it is hard to get out a screw that has been over-tightened to the point of breaking the head without breaking the extractor.

If I simply had to get the screw out then I would remove the meter, cut the tail that can't be removed, drill the cable to release some of the pressure, and then try a screw extractor on the head. Assuming it is successful, then try to source the correct replacement screw.

In reality a replacement meter is a much better and safer route, so speak to the DNO/electricity supplier about that as it is not the client's property to change.
 
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freddo

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To get a screw extractor in there you would first have to use an end mill to flatten the remaining half of the screw, spot it with a centre drill, bore a hole in the centre, a left hand drill bit is best for this when trying to remove broken screws, then try the screw extractor. The meter would need to be clamped down in a drill press or mill to have any chance of success.
 
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