I suspect that BAS meant "the standard requires only that it be capable of" - just a subtle moving of the word "only" which changes the meaning.I feel sure that no Standard would say quite that! It might well say it is 'rated' for a maximum of 10A and/or that it should not be used to carry a current of more than 10A, but it would be daft for a Standard to 'require' that it was "only capable" of carrying 10A. However, I presume we are agreed that it should not be used to carry a current greater than 10A, because (for whatever reason) it is not required (by the Standard) to be able to cope with more than that.And the standard requires that it only be capable of carrying 10A.
I'm sure you're right - but I bet he would have been only too quick to take me to task if I had mis-positioned a word (with a resultant change of meaning) in that fashion, so ....I suspect that BAS meant "the standard requires only that it be capable of" - just a subtle moving of the word "only" which changes the meaning.I feel sure that no Standard would say quite that! It might well say it is 'rated' for a maximum of 10A and/or that it should not be used to carry a current of more than 10A, but it would be daft for a Standard to 'require' that it was "only capable" of carrying 10A. However, I presume we are agreed that it should not be used to carry a current greater than 10A, because (for whatever reason) it is not required (by the Standard) to be able to cope with more than that.And the standard requires that it only be capable of carrying 10A.
But that is actually against the regulations.
You would have an OPD < design current.
2nd, actually - I too miscounted, (but not by as much ).Third time lucky
No, 3rd was right ... I was talking about our combined efforts - mine having been the first of the 'failures'2nd, actually - I too miscounted, (but not by as much ).Third time lucky
It does change the meaning, a matter I've tried to get others to grasp in the past. However, putting to one side for a moment the question of the magnitude of the current, I'm afraid your change does make the statement incorrect. Or less correct.I suspect that BAS meant "the standard requires only that it be capable of" - just a subtle moving of the word "only" which changes the meaning.
Yes, I'm sure that whatever the wording is it won't be "capable of carrying 10A..", or indeed any variation. I'm also sure, that whatever the wording is, the "requirement" will be that it be "capable" of carrying something >10A without going into meltdown, of becoming too hot to touch, and so on, in just the same way that BS 1363 "requires" a plug to be "capable" of carrying 14A (13 x 1.06, rounded up??) without ditto.I feel sure that no Standard would say quite that! It might well say it is 'rated' for a maximum of 10A and/or that it should not be used to carry a current of more than 10A, but it would be daft for a Standard to 'require' that it was "only capable" of carrying 10A. However, I presume we are agreed that it should not be used to carry a current greater than 10A, because (for whatever reason) it is not required (by the Standard) to be able to cope with more than that.
Maybe there is.AFAIK there is no option in BS 1363 to make plugs which cannot handle 13A even if you state that they are so limited.
I respectfully disagree. You have come up with a different interpretation again of what the statements mean. John took the literal interpretation of "the standard requires that it only be capable of carrying 10A" as meaning that the standard required that it can 10A but no more.It does change the meaning, a matter I've tried to get others to grasp in the past. However, putting to one side for a moment the question of the magnitude of the current, I'm afraid your change does make the statement incorrect. Or less correct.I suspect that BAS meant "the standard requires only that it be capable of" - just a subtle moving of the word "only" which changes the meaning.
Yes, you could argue that "the standard requires that it only be capable of carrying 10A" is saying that that is all that the standard requires (i.e. that it has no other requirements for e.g. impact resistance, fire resistance, dimensions etc). But in context that argument could be seen as a tad perverse.
However "the standard requires only that it be capable of" is much more explicitly saying that the only thing the standard requires is that it can carry 10A. "Only" there is qualifying "the standard requires". It's not quite as explicit as "the standard only requires" would be, but it's close.
We neither of us got it right. I think I was closer
I agree totally, and have never suggested otherwise. My comments were nothing to do with 'what is stated on the product' but, rather, were a response to Simon's apparent suggestion (at least, implication) that the connectors being rated at 10A was a reason for having a 10A fuse. As I've said repeatedly, I'm not aware of any requirement to 'protect' a connector with an OPD - and, even if there were, I don't know whether a "10A fuse" would be adequate to 'protect' a "10A connector".But none of any of this changes the fact that IEC60329 C13/14 connectors are rated at only 10A, which is why the makers of pre-formed leads state that rating on their product.
Yes, we've discussed that a few times before, and I don't think anyone has really come up with an explanation as to why (given Table 4F3A of BS7671) that Table seems to indicate that that it is acceptable for 0.75 or 1.0 mm² flex to be protected by a 13A fuse. Mind you, Table 4F3A itself seems to indicate surprisingly low CCCs for flexible cables - e.g. 10A for 1mm² flex, as compared with 17A for 1mm² T+E in free air (Method E)....<BS1363 Table 2>....
What really gets me is when you see a factory installed 13 amp fuse in a plug wired to 0.75mm flex!
Did I ?My comments were nothing to do with 'what is stated on the product' but, rather, were a response to Simon's apparent suggestion (at least, implication) that the connectors being rated at 10A was a reason for having a 10A fuse.
Because that table describes test conditions, and since 3A is the only other preferred value for BS 1362 fuses, if you want to test a pre-wired plug & cable rated at 6 or 10A then you have to use a 13A fuse.I don't think anyone has really come up with an explanation as to why (given Table 4F3A of BS7671) that Table seems to indicate that that it is acceptable for 0.75 or 1.0 mm² flex to be protected by a 13A fuse.
1) That table is for cables operating at 60°C, not 70.Mind you, Table 4F3A itself seems to indicate surprisingly low CCCs for flexible cables - e.g. 10A for 1mm² flex, as compared with 17A for 1mm² T+E in free air (Method E).
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