3A fuse blew before RCD trips

Lobster · 2005-04-08T07:30:06+00:00

OK this friend of mine was cutting his hedge last night, and managed to chop through the flex of his hedge trimmer. Tsk - what a plonker, eh? I'd never do anything as daft as that.The bloke was using it on a RCD-protected cable reel, but was surprised to note that it was the 3A fuse in the trimmer's plug which blew, rather than the RCD in the cable reel's 'plug' which tripped. The RCD test/reset routine checks out fine.Is this normal, or is the RCD faulty/not very good? Shouldn't it be more sensitive than a fuse?David

Apr 08, 2005 20 Replies

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Andy Wade 21 years ago

She's quite right of course - an open ended transmission-line will radiate...

... not that switching the socket off will help much :-)

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3A fuse blew before RCD trips

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