Electricians in London

England Commercial Register scam

We have received a letter threatening to have our Electrical Company removed from a Register ( it makes look like it has been sent by the Companies House ). It is a Scam. They have a website called www.com-reg.com – which is in fact an advertising website and you will end up paying 993Euros plus VAT.The company is called Direct Publisher S.L.U, a Spanish company based in Madrid and they run the same scam in France and Spain.

To
ROBUILD LONDON ELECTRICIANS

Dear Sir/Madam

In order to avoid the removal of your incomplete company details, please revise and approve your information promptly.

If by mistake you returned the forms, do not pay,contact a solicitor.

Electrical cables

Making a Cable
‘The manufacture of cables for transmitting electric power is shown. Copper bars are rolled and drawn into wire, which is twisted into strands, and covered for insulation and protection with layers of rubber, lead, cloth and paper. The completed cables are then given high-voltage tests before being dispatched from the factory.’

Smart Home, Home Integrated Systems, security systems, CCTV

Home Control is automating the control of your home and making your life easier and even saving energy. It can be as basic as dimming lights with a remote control or as complex as setting up a network of items in your home (such as a thermostat, security system, lighting and appliances) that can be programmed using a main controller or even with your mobile phone.

Audio Systems
Lighting Control
Data and Telephone
CCTV
Security

Historical Electrical devices with a generation twist

This is one of my favourite photos I have ever taken in 2013 – London.

old electrics London
The beauty of the past

The property is located in Central London and the house owner decided to sell the house. The original electrical wiring was done around 1951 or just about after the end of the second world war 2. I think I have spotted some of the first factory made electrical wiring under the floorboards.I mean the original metal shield cables.

If you collect old electrical stuff like I do, I am sorry. An electrician will throw everything into a skip. But I am the proud owner of the first generation thermostat and a pay by coins – for electricity – machine.

Doorbell with camera and motion sensors

The iDoorCam smartphone app works with a camera mounted to a doorbell
When a visitor presses the bell, the camera begins filming their face
Images are sent wirelessly to the mobile phone so users can see who it is
The user can then see and hear the guest through the Android and iOS app

You can build one of these with the raspberry Pi, a cheap webcam and a few bits taken from an old computer keyboard. For about £35, everything is on the internet so you just need to follow instructions.
The bell’s mechanics should be recessed behind the door and just the button press showing.

Repairing old fuses

When electric current passes through a wire it causes heating: the thinner the wire the greater the heat. Even the thick wire used in domestic wiring will overheat if too much current passes through it and may easily set the house on fire. To prevent this, a fuse is built into every circuit. This is a particularly thin piece of wire which will heat up quickly and melt if a more than safe quantity of current passes through it.
Modern fuse box - Consumer Unit
Modern fuse box – Consumer Unit

Types of fuses
All master fuses one for each circuit are mounted on fuse carriers in a fuse box close to the Electricity Board’s supply meter. There are two main types, rewirable and cartridge, although miniature circuit breakers are sometimes flitted instead of fuses.

Rewirable
This type has fuse wire stretched between two retaining screws on the porcelain or plastic fuse carrier. The wire is available in three ratings – 5, 15 and 30amp and you can usually buy a card of wire carrying a supply of all three.

Cartridge
This type cannot be rewired since the fuse is sealed inside a tube; once it blows the fuse must be replaced. The advantage of the master cartridge fuse is it is impossible to fit the wrong one because each rating has a different size cartridge (as compared to plug fuses that are uniform in size). The fuses are also colour coded so they can be easily recognized: 5amp is white, 15amp blue, 20amp yellow, 30amp red and 45amp green.

Miniature circuit breakers
Used in domestic fuse boxes instead of fuses, these automatically switch themselves off if a circuit is overloaded. When the fault has been corrected the circuit can be reconnected just by resetting the on/off switch.

Why fuses blow
A master fuse will blow if the circuit is overloaded, if the fuse wire is of too low a rating or if a faulty appliance is used with an unfused plug or socket. Before repairing the fuse check you are not using too many appliances on one circuit and make sure you are using the right size fuse for the circuit. If you suspect a faulty appliance, even though it seems to be working adequately, stop using it and call an electrician or contact the manufacturer. Sometimes a fuse blows simply because it is o1d; all you need to do is replace it with a new one of the correct rating. If a fuse still blows alter being replaced, call an electrician.

Don’t try to stop a fuse blowing by putting in a higher rated one.

Tracing faults
If one of your lights goes out see first whether those nearby are still working; if they are it is likely only the lamp bulb has blown. If all your lights are out check whether the street or your neighbours are in darkness too; if they are there is nothing wrong with your fuses – there is a general power failure and you will just have to wait for the power to be restored. If everyone else’s lights are working you have an internal power failure, so turn off the relevant switch before investigating. You will save time and trouble by keeping a small electrical screwdriver, a torch and replacement fuses or fuse wire handy by the fuse box. A supply of candles in the house is also good sense.

Rewiring fuses
Always turn off the mains supply switch before attempting any repairs. If you are really efficient you will have made a numbered plan of the carriers in your fuse box, labelling each one according to the circuit it controls (cooker, downstairs sockets,upstairs lights etc.). This plan should be taped on the inside of the fuse box door so, when investigating a blown fuse, you can pick out the relevant Cartridge fuses carrier first time.

If you have not labelled them you must pull out each carrier in turn to find the blown fuse – look for one which has a broken or melted fuse wire. Undo the screws which clamp the fuse wire in place and remove the remains of the old wire. Stretch a new wire of the correct rating loosely between the screws and wind the ends in a clockwise direction round the screws, which must be carefully tightened until the wire is firmly held. Replace the fuse holder and close the fuse box before reconnecting the supply.

Replacing cartridge fuses
The only way of telling which cartridge fuse has blown is to remove one carrier at a time. Turn off the mains switch, remove a carrier, close the fuse box cover and switch on the mains supply. If everything else continues to work you have found the failed fuse. Take out the cartridge and replace it with a new one of the correct rating, refit the fuse carrier, close the box cover and turn on the main switch.