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Your half way there already. Try this.... Feed the relay coil via a small bridge rectifier.. Across the coil connect a suitable capacitor (about 100mfd) that will hold the relay on for half a second or so to allow the wireless system to work. sounds more complicated than it is but It's all...

Nope! Look at the internal circuit diagram on the front of the RCD in the picture posted by "wontdothatagain" BTW looking at that pic. The connections from the incoming supply cable is a bit shoddy. Regards FB

Most definitely transformers and 11Kv circuit breakers. The breakers are out of their cases which don't seem to appear in the pic. You can actually see the four of the six Pins on the one in the centre between the two transformers. . Yes Agreed We always wind the switch out of the rack and...

Agreed! Ref Marconi's spark gap wireless transmitters as used on the Titanic etc. Sparks are a well known source of RFI being able to be heard all across the RF spectrum.

Could be a bit misleading here, a lot of TV antenna use a "folded" dipole as the active element of a Yagi beam. This would present a short circuit to a multimeter connected across it. Of course at 700odd Mhz the impedance would be 75ohms!

There is no reason why you can not replace an electronic module with a wire wound transformer or visa versa. To be honest I prefer the wire wound type as I find them more reliable. The disadvantage is their weight though. Depends how it's mounted in the roof space. However as Spark 123 has...

If you can "wiggle" the joint then IMHO it's not tight enough, hence the need for the proper tool for the job. If your electrician has used the simple hand crimper then he should know better. Regards FB

When i read that you have a wall light in the bathroom alarm bells started ringing! What type of fitting was/is it? what zone is it in? The reason I ask is that if it is not to regs (ie wrong fitting type/wrong zone) what else has been done to your installation by same person(s)? Anyway...

Use BLUE crimps. The wires should NOT overlap. they should just BUTT together. The description BUTT connectors give a clue :D ALSO... DO NOT use the cheap hand crimp pliers sold for DIY automotive work. they are just not up to the job of crimping to the required compression. Use a ratchet...

Not forgetting to downsize the fuse from 13A to 3A as well!

If the wires aren't long enough, leave them where they are and turn the switch though 180 degrees to get feed / load the right way round.

I notice that the Neutral links from the Incomer main switch load side to the two RCD Neutral supply terminals are also missing. An other oversight I presume? :?:

I've had experience of these welders. They only run from 2 out of the 3 Phases. ie 2 wire 415V supply.(plus earth of course!) IMHO at 15Kw that would be at least a 63A type D breaker.and 10mm2 cable! Having said that, It would be very rare to run the welder at absolute max power. For general...

Maybe I'm old fashioned, but, doesn't anyone use MICC (Pyro) anymore? I used a lot of it for outdoor installations years ago, I like working with it to be honest, can be very neat and tidy if run and clipped correctly.

The mind boggles! :shock:

No one else has taken this up so I'll give my ideas. The GAS hob, states 7.1Kw, I would presume this is the GAS heat output NOT the electrical consumption??? If that is the case then all the electrical supply would be for is the ignition circuit (negligible consumption) The Oven is...

Same as in power stations, They use an instrument called a syncroscope. OR, as in in my early days, 3 bulbs connected across the two sets. when the lamps go out you throw the second generating set on line! Regards FB

Well at least you have enough spare T & E to strip back to find the CPC! :lol: Providing it goes to a propper earth at the other end of course :?: Regards FB

Agreed! and 25mm Tails with 16mm Earth too!

You seem to have made an assumption that this socket is a spur. How can you be 100% certain without finding it's feed point? Is it possible that this socket was a dedicated supply to a central heating boiler or water heater and would therefore be on its own (16A?) MCB? Is there a breaker...