Home |
Search |
Today's Posts |
|
UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
Reply |
|
LinkBack | Thread Tools | Display Modes |
#161
Posted to uk.d-i-y
|
|||
|
|||
Fuses - again
On Monday, 13 January 2020 18:12:52 UTC, Scott wrote:
On Mon, 13 Jan 2020 15:37:10 +0000 (GMT), "Dave Plowman (News)" wrote: In article , Scott wrote: On Mon, 13 Jan 2020 14:44:36 +0000 (GMT), "Dave Plowman (News)" wrote: In article , Scott wrote: The best advice would be to junk any extension lead which isn't protected by a 13 amp fuse. And if old gear isn't protected by its own correct type of fuse, either junk it or fit one. What about reducing the fuse to 10 amps to create an added margin of safety (or even 5 amps if it is only used for electronic equipment)? Because of the chance of someone else using that piece of equipment. Maybe even in the distant future. That's a good point, actually, especially if the extension could continue working with the fuse running hot. I'll change them back to 13A. If that extension lead is of sufficient gauge to blow a 13 amp fuse in event of a fault, there is no reason not to fit a smaller fuse if you want. I thought your reasoning was that if you overloaded the fuse it might keep working but get very hot and damage the plug (though I thought they were packed with sand to prevent that happening). . Sand doesn't stop things getting hot, think of a desert and even beaches in this country. Sand also has the effect of lenghing the possible life-time of a fuse running close or even exceeding it's rated value. The sand will conduct the heat away from the fuse wire so it doesn't melt quite so easily. |
#162
Posted to uk.d-i-y
|
|||
|
|||
Fuses - again
In article ,
Scott wrote: If that extension lead is of sufficient gauge to blow a 13 amp fuse in event of a fault, there is no reason not to fit a smaller fuse if you want. I thought your reasoning was that if you overloaded the fuse it might keep working but get very hot and damage the plug (though I thought they were packed with sand to prevent that happening). . Not me. I leave that sort of thinking to others. ;-) -- *I see you've set aside this special time to humiliate yourself in public Dave Plowman London SW To e-mail, change noise into sound. |
#163
Posted to uk.d-i-y
|
|||
|
|||
Fuses - again
In article ,
wrote: On Monday, 13 January 2020 17:07:20 UTC, Dave Plowman (News) wrote: In article , John Rumm wrote: With some 4 way leads made from Chinesium, its becoming quite common for them to be supplied that way (i.e. with 10A fuse pre-fitted), since it has been demonstrated many do not fare well when subjected to a moderate overload on a 13A fuse (e.g. a continuous load of 18A or so). It does rather prove the point. No-one with any sense would load up an extension lead to 18 amps. They would likely be the same person who would replace a 2 amp fuse in a plug top with a 13 amp one - because after all it gets it working again, the only important thing? So welding is something else you also don't understand. Yawn. Only the likes of you would use a stock 13 amp to 13 amp extension lead with a large welder on full belt. Perhaps you should Google voltage drop. -- *Make it idiot-proof and someone will make a better idiot. Dave Plowman London SW To e-mail, change noise into sound. |
#164
Posted to uk.d-i-y
|
|||
|
|||
Fuses - again
In article ,
whisky-dave wrote: I thought your reasoning was that if you overloaded the fuse it might keep working but get very hot and damage the plug (though I thought they were packed with sand to prevent that happening). . Sand doesn't stop things getting hot, think of a desert and even beaches in this country. Sand also has the effect of lenghing the possible life-time of a fuse running close or even exceeding it's rated value. The sand will conduct the heat away from the fuse wire so it doesn't melt quite so easily. Just wondered if the sand would help prevent the fuse exploding in event of a sudden severe overload? -- *I'm not your type. I'm not inflatable. Dave Plowman London SW To e-mail, change noise into sound. |
#165
Posted to uk.d-i-y
|
|||
|
|||
Fuses - again
On Tuesday, 14 January 2020 14:40:34 UTC, Dave Plowman (News) wrote:
In article , whisky-dave wrote: I thought your reasoning was that if you overloaded the fuse it might keep working but get very hot and damage the plug (though I thought they were packed with sand to prevent that happening). . Sand doesn't stop things getting hot, think of a desert and even beaches in this country. Sand also has the effect of lenghing the possible life-time of a fuse running close or even exceeding it's rated value. The sand will conduct the heat away from the fuse wire so it doesn't melt quite so easily. Just wondered if the sand would help prevent the fuse exploding in event of a sudden severe overload? Logically , well it does prevent arcing as there's no air to jump across. Obviuosly I;ve only seen the glass ones 'explode' or rather you get a flash. I'll ask wodney to put some fuses in a glass of petrol as his ones seem to alllow water in through the end caps, then he can try them out :-} Maybe that's why there's so many fires in australia ****ty fuses. ;-) |
#166
Posted to uk.d-i-y
|
|||
|
|||
Fuses - again
On 13/01/2020 17:05, Dave Plowman (News) wrote:
In article , John Rumm wrote: What about reducing the fuse to 10 amps to create an added margin of safety (or even 5 amps if it is only used for electronic equipment)? With some 4 way leads made from Chinesium, its becoming quite common for them to be supplied that way (i.e. with 10A fuse pre-fitted), since it has been demonstrated many do not fare well when subjected to a moderate overload on a 13A fuse (e.g. a continuous load of 18A or so). It does rather prove the point. Prove what point exactly? No-one with any sense would load up an extension lead to 18 amps. They would likely be the same person who would replace a 2 amp fuse in a plug top with a 13 amp one - because after all it gets it working again, the only important thing? I am talking about the manufacturer here, not the end users. -- Cheers, John. /================================================== ===============\ | Internode Ltd - http://www.internode.co.uk | |-----------------------------------------------------------------| | John Rumm - john(at)internode(dot)co(dot)uk | \================================================= ================/ |
#167
Posted to uk.d-i-y
|
|||
|
|||
Fuses - again
On 14/01/2020 14:34, Dave Plowman (News) wrote:
In article , whisky-dave wrote: I thought your reasoning was that if you overloaded the fuse it might keep working but get very hot and damage the plug (though I thought they were packed with sand to prevent that happening). . Sand doesn't stop things getting hot, think of a desert and even beaches in this country. Sand also has the effect of lenghing the possible life-time of a fuse running close or even exceeding it's rated value. The sand will conduct the heat away from the fuse wire so it doesn't melt quite so easily. Just wondered if the sand would help prevent the fuse exploding in event of a sudden severe overload? Its primary purpose is to quench the arc in the event of a fault. So yes they can and will reduce the explosion risk - especially on low impedance supplies. -- Cheers, John. /================================================== ===============\ | Internode Ltd - http://www.internode.co.uk | |-----------------------------------------------------------------| | John Rumm - john(at)internode(dot)co(dot)uk | \================================================= ================/ |
#168
Posted to uk.d-i-y
|
|||
|
|||
Fuses - again
On Tuesday, 14 January 2020 14:40:33 UTC, Dave Plowman (News) wrote:
In article , tabbypurr wrote: On Monday, 13 January 2020 17:07:20 UTC, Dave Plowman (News) wrote: In article , John Rumm wrote: With some 4 way leads made from Chinesium, its becoming quite common for them to be supplied that way (i.e. with 10A fuse pre-fitted), since it has been demonstrated many do not fare well when subjected to a moderate overload on a 13A fuse (e.g. a continuous load of 18A or so). It does rather prove the point. No-one with any sense would load up an extension lead to 18 amps. They would likely be the same person who would replace a 2 amp fuse in a plug top with a 13 amp one - because after all it gets it working again, the only important thing? So welding is something else you also don't understand. Yawn. Only the likes of you would use a stock 13 amp to 13 amp extension lead with a large welder on full belt. I don't, but don't let fact get in the way, just keep making it up as usual. Perhaps you should Google voltage drop. Why, I learnt about that when a child. And while we're here it does not stop a significant number of people successfully using 30A (input current) welders on 30/32A circuits & 13A plugs. NT |
Reply |
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Forum | |||
Can I Replace All My Fuses WIth Time Delay Fuses? | Home Repair | |||
Hot Fuses.... | UK diy | |||
Breaker panel with main fuses? | Home Repair | |||
5 Amp Fuses | UK diy | |||
Rotel Receiver keeps blowing fuses | Electronics Repair |