There are also rules that govern the length of ring and radial circuits that limits the length of cable you use, no more than a floor area of 100 square metres, and long spurs can exceed those limits Here, we’ve discussed how to convert metric sizes to SAE ones. Follow this table and you won’t have to take the hassle every time. You have a legal duty of care to anyone visiting your home. In fact, you can be prosecuted if a visitor is electrocuted when using an electrical item you have worked on. Part P of the Building Regulations states that any electrical installations must be carried out by a competent person.

Table showing a comparison of the maximum rated transmission distances for the various types of Digital Video cables.Next, screw the base of the junction box to the side of an adjacent joist, or to a batten nailed between joists. It will then be within reach of the cut ends of the main cable. Before beginning, please make sure you read through the below warnings to keep yourself and your family safe. The spur must be connected to the existing circuit using the same size and type of cable as used in the main circuit you’re spuring from. Normally 2.5mm twin and earth Next, screw the base of the junction box to the side of an adjacent joist, or to a batten nailed between joists. Then it’ll be within reach of the cut ends of the main cable. Step 5

If plasterboard, use a stud detector to detect any horizontal studs and if there are any, mark and cut the face of the plasterboard out either side of the stud. Notch the stud out to the depth of around 15mm using a chisel.If the faceplate is made of metal, cut a short length of earth core from 1.5 mm² cable and run it between the earth terminals of the faceplate and mounting box. Replace the faceplate. Step 4 Works carried out outside of a ‘special location’. This means any work in the following rooms is non-notifiable: Kitchens, living rooms, bedrooms, porches, hallways, gardens, loft spaces and dining rooms. Connect each wire to it’s correct terminal; Brown live to live, blue neutral to neutral and earth to earth. Dr. John Emmett discusses the characteristics a cable needs for use in high-performance digital video applications.

This table cross references many popular cable types against their appropriate cable group to aid the selection of an appropriate co-axial connector. The Subject of CE marking has been fraught with partial understanding and confusion. We felt a brief outline of what is a complicated political, legal, commercial and technical subject might help clarify matters for our customers.You can then re-tighten all the terminal screws, ensuring that all the wires are correctly fitted and securely held in place. Make sure you don’t overtighten at this stage. Cables may be placed in floor or ceiling voids but not amidst, or wrapped in insulation as they can become too hot, over heat and catch fire

For metal faceplates, cut a short length of earth core from 1.5mm cable and run it between the earth terminals of the faceplate and the mounting box. Reached the point where you are unsure how to proceed? Please do not hesitate to call an electrician. Canford by acoustics consultant Tony Woolf, who specialises in design of broadcast and recording studios, and in hearing The slightly easier and more straight forward method is to use a junction box. This is mainly due to the fact that you can choose your install location and ensure there is plenty of space so you’re not struggling to see when connecting things up. The following tables are intended to aid cable selection by showing applications and specifications of the cables in the catalogue.Next, re-tighten all the terminal screws, ensuring that all wires are correctly fitted and securely held in place. Do not overtighten. In this case you can cut a small section out the face of the plasterboard and notch the timber stud with a chisel, run the cable around it and then repair the hole.