Presumably intelligent responsible design and manufacture.
Are there fuses incorporated in your boiler, television set and other products that might require them?
Boiler Supply Q
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Are there fuses incorporated in your boiler, television set and other products that might require them?
But not when the 'piece of equipment' is made up from a series of components and once assembled together those components along with their thin cable require protection.
Logically speaking, each and every piece of equipment (or 'component') which it is felt needs ('might benefit from') the protection of a low-rated fuse should have such a fuse internally.
Kind Regards, John
For a television there will be a designer and that design will incorporate any required protection such as a fuse, the manufacturer will assemble the required series of components including the fuse until it becomes a functioning television.
So who is the intelligent responsible designer and manufacturer in the case of a piece of equipment called a central heating system?
For a
See any resemblance?
So your television set contains hundreds of fuses to protect the components?
Yes that is a rediculous question but I hope you can see the intent within.
I think the problem here is that I would not describe a central heating system as a "piece of equipment" (any more than I would call a system consisting of interconnected computers, monitors, printers, scanners, network switches etc. as being "a piece of equipment").
Yes, soon after I posted that I realised how you were probably going to respond - it was my mistake by 'following you' and using the word 'component' to refer to various items, scattered around a building, which one would find in a central heating system, not electric/electronic components within such items.
IF, hypothetically (analogous to a CH system) my television set consisted of several 'bits'(I'm trying to avoid the c-word!!), bought separately and probably of different manufacturer, and connected together by myself, in scattered locations in my house, and IF, for some reason, one or more of those bits specifically required ('might possibly benefit from') low-rated fuse protection then, yes, I would expect those 'bits' to have appropriate internal fuses.
Kind Regards, John
With respect I don't think it's possible to compare an AV system comprising multiple interconnectable modular products with a heating system designed as wirable (actually stripping and terminating multicore cables) components. Equally I don't see how one can compare a motorised valve with a video recorder. When I mention TV components I'm referring to the mains transformer, bridge rectifier, smooting capacitor, IC's, resistors, inductors etc and I'm quite sure nobody would consider those parts require individual protection.
I believe it would be very silly (probably impossiple) to redesign central heating components such that they each have their own mains lead and plug and still maintain the same versatile combinations of interconnectability in the same way that AV products are manufacturered.
I don't know why some persist in argueing that CH systems don't require a fuse, 3A or otherwise. Surely nobody in their right mind would consider connecting such a system with its 0.5mm² wires directly into a 32A, or even 16A, circuit without a smaller OCPD.
As we regularly see quoted on here 'The fuse is only to protect the cable'.
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No. It is to protect the cable as always. All those accessories should be internally protected.
So you are suggesting all the CH installers in Europe are not in their right mind?
D
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Just as an FYI, majority of boilers I’ve worked on recently have internal fast blow fuses, not sure if that’s relevant to people questioning boilers internal fuse protection.
Will you please stop your irrelevant bleating-on about other countries electric rules/regulations/systems.
This forum is:
and whatever happens in another country is totally irrelevant, even to the point this site has a special place for any such comments:
I don't care a jott what their regs/rules/laws are when I'm working on systems in UK, however when I'm working abroad I've always found circuits provided or dedicated for specific applications (such as CH) are sized and fused accorcingly even if the connexion point is a 16A socket. I've installed 4A 2P MCB's for heating circuits via Shuko socket, found 5A cartridge fuse in E27 (bulbholder style) fuseholder feeding a switch for CH, found 3A MCB for switched lighting socket (differentcircuit to main lights).
Of course radials with multiple outlets abroad are quite rare except in hotels where it's typical to provide a lighting circuit and a power circuit per room which tend to both be 6A or 10A, never (in my experience but I don't know everything) never 16A.
...and, as we found out relatively recently in the P&CH forum, the 'Main Eco Elite' combi has two internal fuses; one on the live, the other on neutral.
There is an extra terminal on the back end of the fuse and the MI state that any external mains thermostat must be connected into that
It is not irreverent to compare with other countries for better or worse when manufacturers sell internationally.
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That doesn't make sense. What do you mean?
You are totally correct
There you are winston; Big red letters is that what you want to see?
If I have a set of flashing fairy lights and fireworks to hand I'd add those too.
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