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My annual water and sewerage bill from Welsh Water is an outrageous £549. I was going to make a complaint about it but was advised to just go with the flow.

I agree but it's a quick preliminary test which can sometimes give you an indication of which circuit the fault is on. Obviously the most effective method of eliminating a fault on the final circuits is to carry out the necessary IR tests.

Yes you mentioned that in your first reply to the thread starter. I was assuming everything had been unplugged. Sorry I did'nt make that clear.

If you've already tested for a L-E fault and not found one then what other logical step is there to take ? Unless there is a problem with the RCD itself (uncommon) the fault is either L-E or N-E

How ?

If you decide to go for 4mm T&E I would recommend 35mm deep boxes rather than 25mm. IMHO it makes it a little easier to fix the fronts on.  I myself am in the process of rewiring my own house and -  like Andy, I am running radials for the 3 living rooms and 4 bedrooms (for the bedrooms...

You're right Lurch. I forgot the thread starter had no electrical skills. 

If the RCD will not reset with all the MCBs off then the next step is to check for a neutral - earth fault. The safest way to do this, in my opinion,  is to isolate the whole consumer unit - preferably using the intermediate isolation switch if your Distribution Network Operator has fitted one...

It still seems to be a frequent practice on new builds to feed the meter tails from the exterior meter box up through the cavity and into the back of the consumer unit on the opposite side of the wall.

Yes but when my ECS gold card runs out in 2019 I'll need to have done the 18th course so it goes on the new card.

Not yet, it happened at 5.00pm on Friday. I have emailed my boss telling him that if he gets a callout bill from the IT engineer then don't pay it as I acted on circuit information supplied to me from the Estates department which turned out to be incorrect. However with hindsight I now believe...

The IT guy who was called out said that the UPSes are supposed to last for 20 mins but I did'nt think I'd had the circuit off that long . The generators would have kicked in had there been a proper power cut. My understanding was that the UPSes are just designed to keep the server going until...

Andy's thread about the BA server has reminded me to post this. In between certifying my companies' installers work I do EICRs.  Since April (on and off) I have been doing an EICR on a medium sized hospital with 4 floors and several hundred circuits. The Estates Dept gave me the circuit...

Thousands of irate customers have already vowed to sue BA for undelivered baggage, however the Chief Exec of BA has warned them that if they do sue him they are likely to lose their cases.

BA are drawing up an emergency plan to sort this out ... but right now .... the plan is up in the air !  :slap

Because he is a very down to earth fellow ! 

I would start by checking for cpc continuity at one of the switches. If yes then it's quite possible that Steps is correct ! (not that Steps is ever incorrect - especially when earth rods are the topic  :Salute   )

+1 and Binky scoobed. Thanks for taking the time to research and type Binky, I appreciate it. If I was installing, I think I would still want to earth a cable tray carrying twin and earth - not a requirement maybe but good practice IMHO. To me there is a reasonable risk -depending on the...

Thanks for the reply. Many trays are suspended by studded bars & unistrut fixed to a concrete ceiling whilst others are attached to the structural steel which is bonded to earth therefore I do not think that the trays are introducing a different earth potential.

I work as an electrical inspector for a large electrical contracting company and regularly follow after installation teams, checking their work and producing EICs. At present I am inspecting, testing and certifying a new installation at a new school, a large one which is due to be handed over...