SPD's

[the pict]

I watched a Leaning Lounge vid on these, quite dramatic!, are these the new RCD, seems to be, Some of us will remember the RCd introduction some won,t, and it was before forums like this when most debates took place at the counter in CEF or Edmunsons , I for one was sceptical, and to some extent I still am, RCD's were hailed as the greatest electrical safety inovation since fused plugs, but then so are RCBO's Now we have Surge protection devices How long before they are a requirement in ALL new installations at a date not far away, Comments any one?

 

[malcolmsanford]

As SPD work on transient voltages in a system such as lightening strikes or voltage surges, and offer no fault protection. I doubt that they will be taking over from the RCD

 

[the pict]

No I mean in addition to
Pict

 

[topquark]

In addition to overload and house side fault protection. If they do operate they are usually nackered and need replacing as well. At least the system (if it has been protected successfully) will probably still operate after, but will need checking over carefully, preferably before the client puts it back into operation

 

[malcolmsanford]

I'm sure that this is going to be something that is looked at.

UK is not that prone to houses being struck by lightening, it does happen occasionally but will it need to have blanket coverage, is open to debate.

In Europe and here in the middle east quite a few places do have blanket use of SPD due to fluctuations in the supply, but these are becoming rarer due to the supplies becoming more stable.

With the advent of machines in the home using switching devices and of course PV then it may indeed be something in the 2nd amendment that will become blanket.

 

[truckster]

The majority of lightning strikes I have had been called out to it has been the telecoms cabling that is most affected so SPD's wouldn't help there would they?

2nd Amendment? Oh goody, more money to spend............

 

[Sparky Ninja]

Overvoltages can occur from any operating switches that are under load (particularly inductive) and so man made one's are very common. Larger loads (motors, welders etc) will simply result in a higher potential overvoltage.
It may appear not necessary to introduce SPD in every installation, but there are particular circumstances where they should be considered. Thus being either where man made overvoltages are likely or if the building is in close proximity to another that has a lightning protection system installed.

 

[Lighthouse Phil]

how about a RCD that trips as normal, but TESTS the circuit before resetting .......
www.el-it.pl/17.03/Gewiss-broszury/Seria902007.pdf