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yes what you have described would be normal.. There appears to be 3 wires connected to the MCB two of these wires are in essence the same cable becuase the the sockets would be wired in a "Ring" essential what you have done is disconnect one end but nothing will have lost power becuase it is...

It is bad practice to wire the FCU as you say he has this is beacuase the fuse will always be live.. for example when done correctly the current flow should go as follows.. Input Terminals - Switch - Fuse - Load When wired correctly when you turn the FCU off at the switch you cut the...

If i understnad that right your saying you have supplied the Fan from two different sources.. permenant supply from the ring main and the switched supply from the bathroom light lighting. If this is the case i suggest you take it back out and do it properly. You cant supply the fan from two...

I came across the same setup a while back only this time the fuse hadnt blown but someone had used a piece of 6mm copper wire in place of the fuse wire.. i just contacted DNO and someone was out an hour later to have a look and they replaced the cutout the the following morning.. The guy who...

If you fit a 230V fan into zone one yes it will have to be IPX4 but it will also have to be protected by a 30ma RCD

one thing i belive you will have to do is lay a metalic grid above the heating elements which must be connected to supp bonding within the bathroom.. I dont have the regs to hand to check but im sure i read this in the OSG a while back.

What rating was the fuse and what does the circuit supply?? Fuses can get hot before they blow especially if they are supplying a circuit that draws near or just over the fuses operating current.. For example i went to a customer who had problems with here Night storage heaters they were...

Indeed i am since every circuit in a TT installation must be protected by an RCD and must comply with regulation 413-02-20 the condition shall be fullfilled for each circuit: Ra * I delta n <50v so although in this instance having an RA of 140ohms and a 300ma RCd as you suggested does...

No they do not Regulation 471-08-06 (Residual Current devices for socket outlet circuits in a TT system, index page 317) "Where the measure is used in an installation forming part of a TT system, every socket-outlet circuit shall be protected by a residual current device and shall comply...

Wouldnt a 300ma be a little to big given Regulation 413-02-20 Ra * I delta n < 50V 140 * .30 = 42V Now i know it is below 50V but it is winter come the summer when it dries out more your earth path resistance could increase pushing it above 50V.. So your maximum Earth electrode...

As mentioned before they only provide a PME for a new connection they wont go around all the old TT supplys and upgrade them. But more importantly you must get a suitable RCD fitted as it is extremely dangerous as it is. But two things to keep in mind if you want to upgrade your supply...

I would imagine that you were getting the reading becuase one of the light switches was turned on so you your test would have been going up the live conductor through the filiment in the lamp and back down your neutral.. and given that if you have a PME supply Neutral and earth are connected...

Two very simple Pictures to explain everything.. www.niceic.org.uk/downloads/Pocket%20Guide%201.pdf

It all Depends on the IP rating and Voltage of the light you want to install.. (broken link i'll find a new one)

Fixed current using equipment installed outside is subject to Part P and therefore is notifiable work so will need to be certificated Taken form http://www.wandsworth.gov.uk/Home/EnvironmentandTransport/PlanningService/BuildingControl/bcnotifiable.htm Part P applies also to parts of the...