UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Earthing a part metal enclosure for mains transformer ?

G6Tanuki · 12th Sep 2019, 7:22 pm

Remember that the fuse-in-the-plug is there to protect the connecting-flex, not the electrical components in the supplied device [which should have its own protective fusing according to load].

I'd fit a 3A fuse in the plug, and use flex that was rated for 5A service - that way you're 'under-fusing' to stay within the flex's ratings.

Just don't get paranoid and obsessive about this sort of stuff. Compared with the rest-of-the-world the UK is kinda crazy about fusing, conductor-ratings etc. Statistics over the last couple of decades show that in the UK the number of domestic fires is on a significantly-declining trend despite the proliferation of electrical devices.

So don't fret and worry yourself into an early grave over the nuances of fusing, flex-ratings etc.

12th Sep 2019, 7:22 pm	#11
G6Tanuki Dekatron Join Date: Apr 2012 Location: Wiltshire, UK. Posts: 14,007	Re: Earthing a part metal enclosure for mains transformer ? Remember that the fuse-in-the-plug is there to protect the connecting-flex, not the electrical components in the supplied device [which should have its own protective fusing according to load]. I'd fit a 3A fuse in the plug, and use flex that was rated for 5A service - that way you're 'under-fusing' to stay within the flex's ratings. Just don't get paranoid and obsessive about this sort of stuff. Compared with the rest-of-the-world the UK is kinda crazy about fusing, conductor-ratings etc. Statistics over the last couple of decades show that in the UK the number of domestic fires is on a significantly-declining trend despite the proliferation of electrical devices. So don't fret and worry yourself into an early grave over the nuances of fusing, flex-ratings etc.