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I've never heard it called an IT system! The star point of transformers are not connected at all. I suppose it does as you say give a little extra safety by allowing motors to run even if they are earthed. However on ship if there is a system whcih has to run no matter what then there will be...

Buy a 6 way junction box easily the neatest way of doing it. Coupla quid from a popular DIY supplier Or get a deeper box to go in the wall!

Not him; Yes QE2 was refitted with HV generation 9 huge turbo diesels and also fitted with the largest propulsion motors ever made. Canbera? It was a steam turbine driving the alternators - built in 1958 way to far back for medium speed diesels to be driving alternators! What do you mean...

Hi Mars; I've heard of things like this too the old statement "They are all not working" you have to read something else into this - once you have found that there is power to each one (IE no common point of failure)... The tennant probably knew that maybe one or two were not working but...

We were investigating the ballasts on the circuit as they were only lasting a matter of days each time - it was 680VAC line to line measured with a fluke meter. As i say the ground is the only reference point on the ship and its all connected together of course being a metal hull - so the...

WRONG Ships back then ran mostly on low voltage DC and used steam to power them. Things have changed since! The HV side is referenced to earth with a 1 ohm resistor at the star point in the generators. But the LV side is floating. Your right if there was infinite resistance to ground then...

Hi Coljac; Yes the generator windings are down to earth, with a 1 ohm resistor - the only purpose of which is to detect and limit fault currents in the HV side. The LV side of the ship is totally floating - the 3 phase systems are 3 wires only, no neutral. Yes come on... I've set the trap...

Speaking from ship systems - a 220V supply (or any other voltage supply for that matter) on the ship is floating. There is no tie to ground so the potential difference between any one wire of the supply is only 110V to ground. Shocks are allways limited to a mild tingle unless of a serious...

Alrite Mik; I've not seen those fascias? I've seen a few fascias with covers over the front so they appear screwless but i think these were metal fronted... Dont think i'll go for the plastic screws idea, i prefer the plastic back box at the moment.

Hi Rizred; I installed my own PVC-U conservatory - similarly i used 35mm roof panels. I also built a 600mm dumpy wall all round. Im a total novice to building and double glazing but its a stunning conservatory now and it was like building lego! The brick wall and concrete base was the most...

Hi Bongos/Mik; The CU is marked up correctly indicating no earth and to not replace with metal fascias... The previous owners were elderly and had the CU box changed by council/government for free. At the same time they seem to have had all the light fittings replaced with identical wall...

Daz; I had the same problem in one of my rental places - the bathroom - it was the same all four lights were behaving strangly. It was in part because the tennant had tried to replace with 50W bulbs - but also one of the lamps i changed a couple times but it didnt stop going on/off. Check...

RF lighting; Your right - im am an arrogant sod that once set on an idea just goes with it - as i said im happy to live with plastic fascias but i would like to mount them in the wall with the minimum of fus and further disturbance to the house.

Sparkwright; Yes its PVC - if it was rubber i'd be rewiring!!! Flameport; I was worried about the ceilings in the ground floor - i'd have to rip down the ceiling or pull up the floors and every single light in the house is a wall mount light (apart from kitchen and bathroom thinking...

Alrite John; Nice solution - thinking outside the box i like it! RF lighting; Thanks for the usefull replies! Why did you bother posting here! Flameport; Its not running the wires that would take me the time - and i'd enjoy that - its the telling the authorities, and then the...

FYI im on a high voltage course as we speak i normally deal with 11'000volts so im well aware of what is safe and what is not. Im a marine electrician and qualified to degree level. I do maintenance on my car too so its not like im a newbie to safety or electrics or doing any kind of DIY...

Hi Bernard; Your right - if the insulation comes off i will have to replace it. It is in good condition in the ones i looked at - i was amazed when i realised it was from 1959 - it doesnt look at all like it, i would have put it at 1990 myself. Tradingdepot has a number of surface and...

Come on guys - if your electricians help this guy out - this is a diy forum not another place for you pros to come and suggest he call in some scumbag with a 17th ed ticket who will charge £40 an hour for a job this guy could do with his multimeter!

Ok who can spot the blatant electricians in the posts above! Why dont you just hold your chins, breath deeply and tell me how many hundreds it will cost... It may have been regs for a few years, but the house was built in 1959. Im not going to upgrade the house every single time a new reg...

I had allready considered the rewire option and ruled it out. It hasnt needed doing for the last 50 years so im not about to do it now! Im asking is there is a solution to mount plastic switches in the wall? Or am i stuck with 25mm plastic surface mount?