AYJAYDEE Posted September 11, 2014 Share Posted September 11, 2014 with the microwave oven not turned on I got a slight buzz off the microwave casing mounting screw so checked with tester and it was energized. checked a neighbours and found the same thing. Anyone else found this? Link to comment Share on other sites More sharing options...
Crossy Posted September 11, 2014 Share Posted September 11, 2014 Quite normal, 99% of microwaves are Class-1 and require a ground in order to be safe. The buzz you feel is caused by leakage through the mains inlet filter (the same thing as causes the buzz some feel from ungrounded computers). Ground the casework and the problem will go away. Link to comment Share on other sites More sharing options...
AYJAYDEE Posted September 11, 2014 Author Share Posted September 11, 2014 Quite normal, 99% of microwaves are Class-1 and require a ground in order to be safe. The buzz you feel is caused by leakage through the mains inlet filter (the same thing as causes the buzz some feel from ungrounded computers). Ground the casework and the problem will go away. thanks crossy. I immediately put in a good copper ground rod and grounded the case to it. no problems since. was wondering if it was a faulty machine. another question: am I correct in assuming one side of a two wire extension bar could still be hot even tho the switch was in the off position depending on the orientation of the wall plug? Link to comment Share on other sites More sharing options...
Crossy Posted September 12, 2014 Share Posted September 12, 2014 Yes, I've never seen a Thai extension lead with a two pole switch, so if the plug is the 'right' way round you could have live outlets even with the switch off 1 Link to comment Share on other sites More sharing options...
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