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"Protective conductor in the building wiring" It doesnt have to be in a building just connected to it...

A single piece of insulation at twice the thickness of that required for basic insulation is reinforced insulation which may be used in place of double insulation. For equipment as defined by BS EN 60950: Class I Equipment where protection against electric shock is achieved by: a) using...

If each meets the requirements of basic insulation then that is double insulated, if only one piece meets the requirement its still basic insulation. If the insulation alone is twice what is required for basic insulation the its reinforced insulation and ths may be used in place of double...

They may be able to make units out of UL94 V-0 or UL94 5V rated plastic. Other standards allow these to be used for fire enclosures for fixed equipment. Details of their requirements are here: http://www.fibox.co.uk/450/Flammability%20classification_ENG1.html A tedious thing is that most...

Thanks crank and JohnD. I'm quite tempted by the lock spare lever change kit!

Fair enough. We do have a patlock fitted with the shoulderd spindles as well as a second layer of protection. Mind you that doesnt stop a brick going through the glass and nor does a lock:-) The other problem with them is that a draught blows through them, im quite tempted to seal up the outer...

Thanks chaps. How secure is the Vectis compared to say a 3* euro anti snap / bump cylinder? Ideally we want to change the locks based purely on paranoia :-)

It would appear that my french doors have ERA Vectis locks fitted to them which use a mortice lock style key rather than a euro cylinder. There are then adaptors for these keys fitted to the hole in the standard euro handle. Sadly we have lost one of the keys so want to replace the locks. It...

I design power meters to meet the safety requirements of EN/UL61010-1 and EN/UL60590 depending on the application. Depending on the installation category (where in the network you are installed) and working voltage you effectively read the basic insulation thickness required from a table. Then...

Winston1 just to confirm, I'm not the OP. As stated I made an educated guess based on what the OP had detailed. After drawing out the cabling at the fitting and fitting that together with a 2 gang switch and another light I deduced that the switch was on one of the 3c+e cables and the other lamp...

Appologies for my wrong doing Risteard. It wasn't a pure guess it was an educated one based on the information provided as I stated at the time. Admittedly there could have been some wierd stuff there so I take your point.

Have a read: http://ecmweb.com/content/what-do-you-know-about-capacitive-voltage-sensors

Thanks Bernard

Fluke have NCV on their 117 model. http://www.fluke.com/fluke/uken/digital-multimeters/fluke-117.htm?pid=55996 They call it "VoltAlert". It has its uses but you need to understand its limitations. As BAS said, just measure it using the leads rather than the NCV mode

No probs, hope the next one is easier! Matt

Im thinking the black and blue should go together? They look like they were twisted together at some point. That would make blue sleeved red the live for this lamp, the yellow the switched for the other lamp and the blue the neutral to the other lamp. Black and red would be incomming neutral...

Is it connected to a couple of switches or just one?

I can't see the pic... Edit, i can now i started replying before you posted....

As kazuya said get a long bar under it to lift it slightly and give it a good hit. Once you get that first crack in it its not too bad... unless there is some sneaky rebar in there....

6491X ? I don't think its solid core in 2.5mm² though and they are singles... Its definitely not just not the stuff listed above with sleeving on the CPC? Failing that what about NYY-J?