12-12-2019, 01:14 PM
21
Re: spot the danger - Brazil style
Originally Posted by realspeed
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Bruce this is in BRAZIL, not my country nor my property, so how would I know. Read the heading
If neutral was not earthed then there is no danger.
12-12-2019, 01:30 PM
22
Re: spot the danger - Brazil style
Originally Posted by Donkeyman
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Thats why uk now has the earth leakage system Brucy? No fuses.This can be a nuisance with poorly installed systems in damp or
wet conditions,( kitchens etc) as if the water connects with the
earth the system immediately trips, and so unless the fault is
found it cannot be reset!
I think you are out of date with your ideas of uk electrics?
Regards Donkeyman!
The clue is in your answer "Earth Leakage", it doesn't trip/operate with a short circuit between live and neutral, hence the 16 amp fuse in the plug because on a ring main the breaker only trips when the current reaches approximately 32amps (nearly 8 kilowatts of power). Ring mains are an archaic system designed to save copper.
Do try to keep up.
12-12-2019, 02:18 PM
23
Re: spot the danger - Brazil style
Originally Posted by Bruce
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Oh dear Assman! what you say is true but totally irrelevant. Why do you suppose there is a fuse in each plug?The clue is in your answer "Earth Leakage", it doesn't trip/operate with a short circuit between live and neutral, hence the 16 amp fuse in the plug because on a ring main the breaker only trips when the current reaches approximately 32amps (nearly 8 kilowatts of power). Ring mains are an archaic system designed to save copper.
Do try to keep up.
to take care of short cicuits and too much current draw! Plus we
have the earth leakage to take care of accidental contact and water
spillage etc!
The thermal overload protects the three pin plug circuit from too
much current draw and short circuits without the need for clumsy
fuses and fused plugs, maybe thermal overloads have not reached
the outback yet?
Donkeyman!
12-12-2019, 02:58 PM
24
Re: spot the danger - Brazil style
Like all third world countries those in South America are horrible. What makes Brasil even worse is the mix of modern gadgets and primitive deployment and the mixed "cultures" ranging from tribal savagery to the tryingobe European - all intermingled.Even though I was able to return to Europe each month I absolutely loathed my time in Brasil.
I didn't live in a gated (armed guarded) community, instead I had an apartment on the sea front in Ipanema who was relatively safe, probably safer than a gated community because those places where known to be where the big money lived.
Brasil? Looks great on postcards - but stinks to high heaven in reality.
12-12-2019, 04:28 PM
26
Re: spot the danger - Brazil style
Originally Posted by shropshiregirl
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That is truly terrifying to see! Don't they have Health & Safety in Brazil? I wonder how many have been electrocuted in that country? 
In Brasil any legislation in anything can be dealt with by a preemptive fine aka back hander to the appropriate official. It really is that bad.
14-12-2019, 03:18 AM
27
Re: spot the danger - Brazil style
Originally Posted by Donkeyman
->
Wendo not have fused plugs here Brucy, we have thermal overloadsto take care of short cicuits and too much current draw! Plus we
have the earth leakage to take care of accidental contact and water
spillage etc!
The thermal overload protects the three pin plug circuit from too
much current draw and short circuits without the need for clumsy
fuses and fused plugs, maybe thermal overloads have not reached
the outback yet?
Donkeyman!
14-12-2019, 08:48 AM
28
Re: spot the danger - Brazil style
The fuses in the plugs on portable electric devices are of a rating appropriate to the device. For example an electric kettle will have a 13 amp fuse whereas a table light will have a fuse of 3 amp rating.The ring main (absolutely not just to minimise the use of copper) will be protected by a cut out comprising of a magnetic circuit breaker containing a fuseable link to protect the circuit in the event of the magnetic cut out failing to operate.
Then there is a residual current circuit breaker (formally earth leakage circuit breaker) or sometimes more than one to provide a safety cutout in the event of a fault that might not result in an over current event but would indicate a break in or contact with a safety earth.
Finally there's the incoming supply fuse prior to the consumption meter to provide safety in the event of the meter itself becoming toast.
14-12-2019, 09:49 AM
29
Re: spot the danger - Brazil style
Originally Posted by The Artful Todger
->
The fuses in the plugs on portable electric devices are of a rating appropriate to the device. For example an electric kettle will have a 13 amp fuse whereas a table light will have a fuse of 3 amp rating.The ring main (absolutely not just to minimise the use of copper) will be protected by a cut out comprising of a magnetic circuit breaker containing a fuseable link to protect the circuit in the event of the magnetic cut out failing to operate.
Then there is a residual current circuit breaker (formally earth leakage circuit breaker) or sometimes more than one to provide a safety cutout in the event of a fault that might not result in an over current event but would indicate a break in or contact with a safety earth.
Finally there's the incoming supply fuse prior to the consumption meter to provide safety in the event of the meter itself becoming toast.
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