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Electric Fixture Safety

01/11/2013 4:04 PM

I have heard critics say electrical appliances like switches and wall outlets in the U.S. are far less safe than those used in Europe. What features of European fixtures make them safer?

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#1

Re: Electric fixture safety

01/11/2013 4:17 PM

they make better women and sports cars...not sure about switches

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#2

Re: Electric fixture safety

01/11/2013 4:33 PM

Isn't it a question of need, based upon the doubled supply voltage?

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#3

Re: Electric fixture safety

01/11/2013 6:02 PM

For safety reasons, UK wiring regulations require home sockets to have shutters over the live and neutral connections. These shutters are opened by the insertion of the longer earth pin. The shutters also help prevent the use of incompatible plugs made to other standards. It is sometimes possible to open the shutters with a screwdriver in order to insert Type C or other plugs, but this is not advised, as such plugs will not have a fuse.

From: http://electricaloutlet.org/type-g

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#4

Re: Electric fixture safety

01/11/2013 6:06 PM

Tempting to take the pee, but here is one example;

Socket outlet/plugs have (not all situations) an earth pin. The pin is longer, so that earthing is established before current flows. The longer earth pin also acts as a 'gate-opener' to prevent some unfortunate from being able to contact either of the other 2 contacts without grounding. The earth pin on any decent appliance also has a partial sheath in case the socket is wrongly wired.

My biggest bugbear is that most appliances come with a ready fitted 13 amp fuse. The majority of appliances would be fine with a lower rated fuse (readily available), though the point is moot if a house has the required trip switches at the main service board (not sure of US terminology, but I mean the point where electricity enters the building).

Lighting fixtures are one to be wary of. They may have been wired with 'neutral switching'. Functionally, that works. Stick your pinkies in one you assume to be 'off' and it's a bad day out. As ever, if looking at a domestic wiring system, it's best to assume some ****** has rigged it to kill.

Useful, though obvious, tips #1; If working on a system, stick the fuses in your pocket. That way, nobody else can unwittingly send the system 'live'. I've seen failure to do so result in death situations.

This topic was aired once before, but it's well worth raising again. If you take a pic to show me yours, I'll show you mine. Clips off internet if needs be, then we can discuss why US domestic wiring is crap. Sorry, that's a bit rash - I'll get back later with some pictures of typical UK sockets/plugs so we can discuss.

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#5

Re: Electric Fixture Safety

01/12/2013 1:24 AM

Since the 2009 version of the Canadian code... we now require tamper proof receptacles on all receptacles where a child may try to insert something into the receptacle. So... we are catching up.

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#6

Re: Electric Fixture Safety

01/12/2013 8:32 AM

"What features of European fixtures make them safer?"

Unlike in the U.S.A. where an abundant supply of unsafe Made in China products can be found flooding the market.

Cheaply manufactured Chinese electrical fixtures and low quality electrical appliances are probably not commonly used nor readily available products in Europe?

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#7
In reply to #6

Re: Electric Fixture Safety

01/12/2013 12:53 PM

I would not bet money on that... I get reports from the Canadian federal police as part of my duties on one of the committees I am on, and the cheap and counterfeit product problem is global. The counterfeit product alone is said to be over 20% of global trade (that number may be higher as I do not have the report here at home).

It is getting very hard to identify the counterfeit stuff from legitimate product. Only destructive testing can really find it.

The problem is is that the counterfeit stuff needs to be included in the mix when talking about product quality.

Our industry needs to be aware that... the crap stuff is EVERYWHERE.

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#8
In reply to #7

Re: Electric Fixture Safety

01/12/2013 1:38 PM

And, although I am no fan of Chinese products, they don't have a monopoly on making cheap junk.

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#9
In reply to #7

Re: Electric Fixture Safety

01/12/2013 2:00 PM

With the present economic conditions prevailing in this country, one cannot fully ascertain nor completely ignore the fact that public safety is ultimately being sacrificed! Law of supply and demand dictates that by flooding the market, with repairs and replacements parts using cheap - inferior quality electrical fixtures from China, safety as its end effect always suffers!

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#10
In reply to #7

Re: Electric Fixture Safety

01/12/2013 2:11 PM

Sorry guys... my numbers were way off. It is estimated that counterfeit products are 5 to 7% of global trade. Here is a link with more info...

IEC Document

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#12
In reply to #6

Re: Electric Fixture Safety

01/13/2013 3:38 AM

Jeez... nothing to do with China.
They didn't write your electrical code or choose you distribution system.
Del

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#11

Re: Electric Fixture Safety

01/12/2013 2:29 PM

My simplistic answer deals with electrical properties.

Based on the part of your question that deals with switches, US switches in a typical household handle half the voltage of European electic service. For the same amount of power the US switch has to handle twice the current.

The typical wall outlet In the US has a larger slot for the Neutral line, a smaller slot for the hot lead and a round one for a ground. In Europe there is no distributed neutral wire. In North America and Latin America the neutral is connected to ground in the power distibution box. In a typical household it handles half the voltage of European electic service and for the same amount of power the US outlet has to handle twice the current for the same power.

The US fixtures are concerned more with higher current and heat and the European fixtures are concerned with higher voltages.

Safety features for fixtures that people come into contact with have been described well by other contributers here.

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#13

Re: Electric Fixture Safety

01/13/2013 3:40 AM

UK uses large diameter electrons which won't spill out of the outlets.

They are also polished to a better surface finish and a much nice shade of blue.
Del

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#14

Re: Electric Fixture Safety

01/13/2013 12:18 PM

Although U.S. switches and receptacles may not be as safe as those used in the UK or Europe, I never hear of anyone getting electrocuted because of unsafe fixtures. The switched neutral is a no-no here. Modern plugs are polarized so switched neutrals are eliminated, although people can hook them up wrong if they don't know what they are doing. Underwriters Laboratory (UL) is mandated to keep things safe and they seem to be doing a good job.

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