Search results

Well google suggests;  https://www.cityandguilds.com/-/media/cityandguilds-site/documents/help/more/bookshop/building-services-engineering/11the-city--guilds-textbook-level-3-diploma-in-electrical-installations-buildings-and-structures-2-pdf.ashx Doc H.

This I think is your fundamental concept stumbling block,  as there is no such thing as a standard domestic installation. So no one can answer any more accurately than;  How long will a standard pair of shoes last? How much does a standard holiday cost? How much food does a standard family...

There is no simple answer, as there are to many unknown quantities that can only be confirmed by seeing the installation.  As with anything in life if you do not have the skill or expertise to do it yourself you have to call upon the services of someone more knowledgeable. At the end of the day...

Guidance for any type of alteration, is to first verify the condition of the supply and existing equipment, that will be affected by additional electrical loads put on the installation. (often ignored on DIY lash-ups). As you are looking at adding significant loads that can't just plug into a...

1) Still curious and interested to know who signed the declarations for design and install on the electrical certificates for this "notifiable" work you described? 2) I think you will find it should be designed, installed, inspected & tested in accordance with BS7671. Then Notified for...

I will try again, as I didn't ask if the oven was on a radial circuit.   Is the oven circuit connected to an MCB that is supplied from an RCD, or does it have its own dedicated RCBO?  If it is an MCB supplied from an RCD, do other MCB's share this same RCD.  i.e. it is very common to have a...

If the switch was correctly terminated, there should be no bare conductor exposed outside of its termination in the back of the switch, for your scissors to make contact with. Also its not uncommon to find connections that have not been correctly tightened, so the process of loosening the switch...

I was just wondering why you mention "I can wire a house" in you opening line?  Do you mean, you can connect wires in loop to complete a circuit and make a Light/TV/Kettle/hot tub etc work?  Or do you mean you can design, install, test, certify, notify for part-P in accordance with the current...

Is the RCD shared between other circuits?  If it is, there could be another appliance with some natural leakage, that when combined with a bit of oven natural leakage, the two combined trip  the RCD. Doc H.

I noticed this whilst browsing my online news feed earlier;   https://www.bbc.co.uk/news/uk-england-merseyside-51152431  Someone is going to have trouble forgetting that 'bad day at work'. It made me wonder, (excluding the common drill/screw/nail through a water pipe), who on here has damaged...

You don't say what your current job is, or what qualifications you currently have?. Assuming nothing at all, the first place is a good grasp of Maths & Physics, as they are fundamental to circuit design calculations. If they have faded a bit since school, it could be worth checking for Maths...

300 years?  I have just been double checking the forum enrolment archives, which suggest you are still only 298 years in the trade. Please remember that the forum prides itself on accuracy, honesty and friendly atmosphere. I do hope you are not trying to pull the wool over the eyes of younger...

1. The transformer (green box) is the part that converts mains voltage down to 12v. You can get transformers of numerous output ratings, so some can operate multiple lights or others that can only operate a single light. It is impossible to say what arrangement you have got over the internet...

You have an arrangement of fuse box that is common in a lot of properties, they were installed with that configuration due to the higher costs of RCD's compared to MCB's. It is not unsafe or dangerous, but it is not the best functional configuration due to the type of problems you are now...

Welcome to the forum.  It sounds like you have a perfectly functional consumer unit doing exactly what it was designed to do, protect you & your property from electrical danger.  What you refer to as RCDs I think are MCB's  and what you call the main circuit breaker is an RCD.  RCD's must...

You really need suitable meters to verify continuity, polarity & voltage on all of your wires, a neon has very limited usage and is not an approve test instrument for electrical work. It cannot identify how much voltage is or isn't present on a conductor, as you simply have a glow to...

This is point that seems to be ignored with the latest carbon neutral, eco, green, campaigns to ban all gas boilers and fit electric boilers instead, How much is that going to cost the typical family household on average usage? Doc H 

In the modern internet, 'google everything to find the best price climate', have you never done a search for different options of purchasing cable sizes / lengths?   Screwfix & Toolstation are nearly as common as Greggs & Subway and they have both been selling smaller size cable length...

Thank you for the update. Basic tip for any future fault finding problems, is to always assume everything is faulty until you have proved otherwise. Or "Do Not Assume Anything", irrespective of what your brain is saying is or isn't working correctly. Doc H.

Have you been reading Kerching's bedtime fairy stories again Sharpend?  Doc H.