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An old rule of thumb that DNO sparks use for diversity is add up all your protection devices and multiply that by 0.4. That will give you a rough guide to how much loading you will use. It's not a definate design formula but as a guide it's pretty good The 3 x 32amps sound fine. If you think...

If it is a mechanical timer is there a little motor attached to it? and if there is, do you have anything to test if there is voltage going to the motor. You can test with a multi- meter as that will tell you 1 Is there power going to the motor. 2. If there is then you can change the...

Check the socket you may have a loose connection there. If not then check the CU for same. Is there any sound from the socket or in the installation like a crackling which might indicate a loose connection. http://www.sercal-testequipmentsales.co.uk/socket-testers-10-c.asp One of these...

Would this help or be of use http://www.mkelectric.co.uk/en-GB/Products/WD/New/Astral/Pages/default.aspx

By the looks of things they are charging you for moving the supply. I only re-read your post now and you say that you agreed to dig the 40mt trench, are you supplying any cable or are the DNO supplying that? I can only think they mean by "modern appliances" is that your existing fuse is a...

Will you need to extend the leg of the ring that comes through the wall into the masterseal? how do you intend to do that? I'm assuming that the downstairs ring is RCD protected if your installation is not 17th edition. The existing masterseals are they also of this ring, and if they are how...

It does sound by your post that indeed the 3 elements or rings are failing, after all nothing lasts forever. From what you have written you don't seem to have the technical background to check your elements. What you could have done is check the insulation resistance between the good element...

Sorry flame was thinking of class 1 :oops: my mistake Class 2 then might not trip at first but wouldn't the double insulation protect you from initial shock ,

Is it a lowing of our standards as such? are we all guilty of not being a little conceited to think we have the best and therefore other standards are wrong. Quite a few designer bathrooms do have televisions in them and other gadgets and bathrooms have ceased to become just toilets and wash...

That is most impressive and we stand in awe of your knowledge of mathematical equations, As you quite rightly say product is a multiplication terms in the context of mathematics. If though like me you were using it in a grammatical context, a product is something produced as a result of a...

Now that like Europe we have embraced the RCD it is strange we haven't relented on power supplies inside bathrooms. Many hotels throughout Europe have hairdryers in the bathrooms and to be honest isn't that a totally logical place to have them. Most Electricians throughout Europe are amazed...

Do you ever actually read anything before you decide to impart your pearls of wisdom. The OP in his question was referring quite a lot to current being low and not a lot of current there. Which I pointed out to him in this context current is not relevant as he would not be getting any if the...

I never try to be negative but your not helping by this. The guys here have given you links to various places that will help you understand as these links are done with educating in mind. Why are you so against reading them, but willing to read what we have to say. As I asked earlier...

You did say you were a sparks didn't you :(

Yes I think you may do It is not unusual to have the neutrals at a switch, that is if they are neutrals as switch lines could also be black. That is just one of several methods that can be safely utilised to wire a lighting circuit. Red Black and Neutrals, what colour are these neutrals...

The amp part is not relevant really as load in amps is a product of voltage and power. When you say you tested for voltage what did you get at the rose 230v?

Even though the schemes are self certify, it is I'm sure a pretty regular occurence for Part P certified sparks to sign off other sparks work, though of course it can't be condone. If you don't know a Part P registered sparks then a call to the LABC is an option. As you say hold your hands...

Would you not class it as a distribution circuit feeding a CU and then apply the 3% for lighting from the new CU

Ahhhhhhh pity the heady days of 5% are no longer with us, point taken BaS I did say 6mm^ at the least but I thought 10mm^ was the one, but I wanted to throw that back at the OP when I mention his design. As you know BaS there is nothing prohibiting exporting the Earth as far as design and...

No reason at all as 6mm^ is within the 32amp range providing you take into account the run of cable and the disconnect times, that is all part of your installation design. As 42m is a fair run. I would use 6mm at least or even 10mm Be very supprised if you will find a sparks to sign off your...