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Safe number of appliances plugged in to a wall socket
Comments
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No I don't know better than the Electrical Safety Council, who provide a useful on-line Socket Overload Calculator here
This shows that there is no danger of overload using the appliances mentioned by the OP.
No it doesn't. All that app is doing is using simple loading calculations based on a single 4 way adaptor protected by a BS1362 fuse. And thanks for pointing me to it, I'll be sending them a technical complaints letter as to how misleading it is.
The OP has already stated that none of his devices are high powered, yet you still try the scare tactics. May be you ought to take a look at my collection of burnt and generally mangled multiple adaptors that I've removed from houses over the years, then tell me if you think it's scaremongering or actually based on real life experiences of heat and flames.
You have assumed that the OP could have more sockets installed when this may not be possible for various reasons. That is fair comment, but generally speaking there are always better solutions available than a twisted tangle of cables all generating magnetic fields which generate heat.....it's why us 'raking it in and taking the pee sparkies' spent hours and hours in college learning about this stuff and call it 'mutual detrimental influence'...just so we can BS the unsuspecting public.
The Building Regulations 2000 have absolutely nothing to do with the question raised by the OP. Really? So, Part P which references BS7671:2008, would have absolutely nothing whatsoever to say on this? Try looking up section 553 and also App 8.7. If this site allowed file downloads I'd scan them and show you.
More crap that you can save for your gullible customers! My customers often get told they DON'T need things doing just as much they do, sunshine. Carry on like this and you and me'll have a falling out.
No excuses just fact. Hmmmm........ Forget the popcorn, I bet that you don't do Humble Pie.
I think you ought to lay off the caffeine for a while.0 -
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I think you ought to lay off the caffeine for a while.
Caffeine is far better than the bullsh!te that you spout. You are pathetic and are simply not worthy of sensible discussion, so now will be ignored and I suggest that other MSE'ers do the same.:doh: Blue text on this forum usually signifies hyperlinks, so click on them!..:wall:0 -
Slightly off tune and about a wheelbarrow full every week.
Seriously, neutral harmonics are irrelevant for single phase equipment, because you will have the same harmonic on the live. They only come into play in 3 phase systems where 3rd, 6th and 9th are of interest.
In fairness, a reasonable point...the issue here being the number of DNO neutrals being destroyed by modern SMP's.
And as for earth leakage, you'll probably find it is double insulated. Until you clamp the line and realise how much current these cheap Chinese SMP's dump to earth or as disruption on the neutral (as above)
This forum has a fine tradition of only putting people off electrics when they are likely to be a danger to themselves. I don't have an issue with that, though. Yes, this is MSE, but there is a distinct difference between giving someone best advice and giving them a rope to hang themselves.
Other offputting stuff is likely to be debunked. Which is where it gets so hard to see the wood for the trees!
What I find as so incomprehensible is that people will come on here asking for an opinion from people who know more about the subject than they do, then they get an answer from those of us who ARE experts in our field having both decades of academic technical training and real-life experience.....and we get branded as charlatans peddling snake oil! The world has lost it's head.
I'm off to be an open heart surgeon....well.....google says it can't be that hard.....0 -
Twisted tangles of cables generate heat based on I^2r, just the same as the same currents through the same cables laid out straight . Magnetic fields do not figure noticeably in the heating. Why they get hotter is because tangled cables do not dissipate heat so efficiently and - because their resistance increases with temperature - there is more heat to dissipate.That is fair comment, but generally speaking there are always better solutions available than a twisted tangle of cables all generating magnetic fields which generate heat.....it's why us 'raking it in and taking the pee sparkies' spent hours and hours in college learning about this stuff and call it 'mutual detrimental influence'...just so we can BS the unsuspecting public.You might as well ask the Wizard of Oz to give you a big number as pay a Credit Referencing Agency for a so-called 'credit-score'0 -
Twisted tangles of cables generate heat based on I^2r, just the same as the same currents through the same cables laid out straight . Magnetic fields do not figure noticeably in the heating. Why they get hotter is because tangled cables do not dissipate heat so efficiently and - because their resistance increases with temperature - there is more heat to dissipate.
You never not unreeled an extension cable, then?0 -
Sorry, you are putting yourself in line of fire for snake oil accusations by coming out with stuff which does have a basis in truth, but which you apply to situations where it simply is not relevant. For example neutral harmonics on a 3 phase system.What I find as so incomprehensible is that people will come on here asking for an opinion from people who know more about the subject than they do, then they get an answer from those of us who ARE experts in our field having both decades of academic technical training and real-life experience.....and we get branded as charlatans peddling snake oil! The world has lost it's head.
I'm off to be an open heart surgeon....well.....google says it can't be that hard.....You might as well ask the Wizard of Oz to give you a big number as pay a Credit Referencing Agency for a so-called 'credit-score'0 -
Sorry, you are putting yourself in line of fire for snake oil accusations by coming out with stuff which does have a basis in truth, but which you apply to situations where it simply is not relevant. For example neutral harmonics on a 3 phase system.
Fair point!
But I still think I'm off to be a heart surgeon, there's clearly no money in electrics anymore.0 -
Yes, it gets hot under load, possibly to the point of melting and failing or worse. We would not disagree about what happens.You never not unreeled an extension cable, then?
Where I disagree with you fundamentally is on the physics behind this. It is nothing to do with magnetic fields, as I posted. It is simply that an unreeled cae is able to dissipate its losses safely. A coiled cable is unable to dissipate those losses and melts.
It wold be the same on a DC system as on an AC system.You might as well ask the Wizard of Oz to give you a big number as pay a Credit Referencing Agency for a so-called 'credit-score'0
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