That is the continuous rating of the IEC connector.
Find a spare IEC inlet. Wire it up short between L&N. Connect your IEC lead and power up. Would you expect a 13 amp fuse not to blow. but the IEC connector to burst into flames?
Of course not, but that might be the case with a continuous overload.
But, to be philosophical, that has to be better than being presented with three incorrectly colour-coded ones.
Bill
Yes. 'Earth' is also an interesting concept there. I've got a photo somewhere of a genny in Qatar, with its earth spike driven into pure bone dry (obvs) sand.
2 amps is more than enough for a small lamp. 1 amp is likely to be okay.
This would explain the existence of unfused plugs.
Interesting. You should teach this stuff (not necessarily with the live snips demonstration).
My maths teacher was ex-army and his nickname was Biffo
Nor to most people with actual disabilities. It's a free parking scam for many.
If there is a possibility of the device itself overloading, it should have an internal fuse, etc. Remember most countries don't have fuses in the plug.
We had one for geography. His nickname was *whilst in detention*:-(
No excuses were ever accepted.
Which does not protect against a user connecting multiple loads via an unfused adapter - such as two or three-way IEC connectors.
Yeah, that's what I meant.
Half an amp would be plenty, but it is not relevant to the point being made. i.e. with a table lamp or similar, the fuse does not need to be there for overload protection at all. Its only purpose is to provide fault protection of the wiring downstream of the plug.
Much the same as when you take an unfused spur from a 32A ring circuit, the MCB offers no overload protection to the spur, only fault protection.
I don't know, the live demos always help make a good point. :-)
Like what happens when you have a short circuit on a mains lead, and the plug is fitted with a fake BS1362 fuse:
Motors able to overload with no internal fuse are widespread.
Normally true, but I've seen the aftermath of a 275w bulb in a 60w fitting.
Not enough current to blow even a 1A fuse... sometimes you just can't fix stupid! However when the fitting melts and you get a hard short, then the fuse (any fuse!) can do something useful.
I think the inrush current might take it's toll on a fuse after it's been suitably oxidised and degraded over time.
Inrush current can degrade a fuse without excessive oxidation being present. The fuse wire expands almost instantaneously during the inrush and bends slightly. Eventually metal fatigue causes the fuse wire to crack at the ends where the wire is terminated. I have seen this effect in low-current (1A) pcb mounted fuses in a power supply. John
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