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Re: How can the person who tested this in 2002 got away with
stratfordgirl wrote:“hard wired” American style tumble dryers on a 13A plug over several years without any obvious problem.
Hard wired like this metal pin for a fuse……?
Re: How can the person who tested this in 2002 got away with
That’s the only way you will get 20 amps through it martin, that’s bad, almost like using the nail in the old rewireable fuses in the consumer unit!
Re: How can the person who tested this in 2002 got away with
The mind boggles
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DrDill wrote:Sorry, a 13amp fuse blows when more than 13amps is drawn through it, no way can 20 amps be drawn through it, unless the fuse was somehow working at a greater load.
That’s the point of a fuse, its in line and blows when its rated load is exceeded, it is their whole purpose in life.Sorry to be pedantic but according to the Cooper Bussmann datasheet a BS1362 fuse can carry 1.5 times its rated current indefinitely before blowing (20A is 1.54 times the rating of a 13A fuse) – it is not till approximately 1.75 times the rated current that the fuse will blow in approx 1.5 Seconds for the best made fuse, those at the top end of the tolerance don’t have to blow till twice there rated current.
Jem
Re: How can the person who tested this in 2002 got away with
The above is true enough, but not for any period of time needed for a 20amp dryer to complete a cycle, as you know the fuse is there to protect the cable not the appliance, the plug top however could and will start to melt after over heating, that’s why the fuse will blow after a very short period of time and I would doubt very much that a 20 amp dryer will work time after time without some one replacing the fuse time after time. The cable won’t overheat but the plug and fuse will, and that unfortunatley is why the current uk plug is the safest in the world when used and wired correctly.
So I stand by my statement regards the 20amp dryer working perfectly and the electric hobRe: How can the person who tested this in 2002 got away with
Didn’t some experts say the Titanic could not sink.
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Re: How can the person who tested this in 2002 got away with
Martin wrote:
stratfordgirl wrote:
“hard wired” American style tumble dryers on a 13A plug over several years without any obvious problem.Hard wired like this metal pin for a fuse……?
Takes away the inconvienence of having to replace fuses.
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Re: How can the person who tested this in 2002 got away with
Both these “commercial” dryers were rated between 4.6 and 5 kW and wired into a normal 13A fused plug. One was at a hairdresser’s and the other in a (disused) Sauna in a large house used as a Kindergarten. The hairdresser ignored my verbal and written warnings on several occasions over a 2-3 year period until he eventually replaced the dryer with a cheap domestic machine. Fortunately, the LG dryer was scrapped as it was deemed beyond economic repair.
It may be surprising, but BS1362 (the standard for fuses in BS1363 plugs) allows a 13A fuse a full 30 minutes to blow at a current of 24.7A (1.9 times the rated current) and specifies that it must be capable of passing indefinitely a current of 20.8A (1.6 times the rated current).
I suspect this is to ensure reliability under diverse loading conditions. It also explains how many people manage to get by with a washing machine and tumble dryer (for example) running simultaneously on a single 13A power adapter.
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