ALL OF THE ILLUSTRATIONS IN THIS BOOK SHOW TYPICAL WIRING METHODS, ACTUAL INSTALLA- How the Home Electrical System Works. WIRE NUT. home and cottage owners these days. Manitobans are choosing to build new homes, additions and cottages, so it is only natural that installing electrical wiring. Basic electrical circuits and theory. • Branch circuit wiring. • A basic top view floor plan. Terminology. Block diagram: a diagram of a system in which the principal.
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TLC recommends that you download and save this pdf document and .. Box: An enclosure designed to provide access to the electrical wiring system. Basic Electrical House Wiring. Abdulaziz Hassan. Contents 1. Basic Symbols of Electricity .. 2. Rules of Safety of Electricity .. 3. Simple Electrical Wiring Diagrams | Basic Light Switch Diagram - (pdf, 42kb) Power at Light 2-way Switch Wiring Diagram Basic Electrical Wiring, Electrical.
Radial circuits are used for lighting. It can be made softer and more flexible by the addition of plasticizers, the most widely used being phthalates. Anyone installing wiring should also understand some basic safety issues not discussed here. So beware, if you take down a rose without paying attention to which wire is which, and you re-connect all the blacks or blues together, your fuse or MCB will trip. New installations will have two or more RCDs. Sucker
PVC Cable and Insulated tape….. Devices of measuring of Electricity…………… I consider myself very lucky and honored to be part this book, I know this book is contains small pages but it provides you some help about only concerning in a electrical house wiring but there is some more explanation about electronics in this book so by the way I would like to thanks after this my beloved teacher Eng.
I have learned so much from my mistake, I am thinking of making a few more. Waxaa mahad iska leh ALLAH oo suuro galiyey in aan qorno buugan yar oo ka kooban 32 pages oo aan ugu talagalnay in aan u hadiyeyno aradada naga danbeesa ee ajinabiga ah nooc waliba ha ahaadeene intii daneynaysa waxabrashada waxaanse rajeenayaa in uu kaa yaro caawin doono course daan aad qaadatay ee ah Electrical House Wiring.
Normally, a main switch, and in recent boards, one or more residual-current devices RCD or residual current breakers with over current protection RCBO , are also incorporated. Distribution boards are also referred to as a: Based on the number of poles, the breakers are classified as 1. Single Phase Supply to break the Phase only.
Single Phase Supply to break the Phase and Neutral. Three Phase Supply only Without Neutral. TPN for Y or star the connection between ground and neutral is in many countries not allowed.
Therefore the N is also switches. Three Phase Supply with Neutral 5. Rules of Safety of Electricity Rule no. Rule no. You never know. The only way to be sure. Easy to check. This rule is very easy to forget, especially when you are showing some electrical part pointing with metallic pencil. Always be aware.
Safety clothes, gloves and shoes Rule no. This precaution reduces the likelihood of accidents that result in current passing through the chest cavity.
If you ever read about current passing through human body you will know, so remember — work with one hand only. If equipment must be used in such areas, mount the equipment on a wall or vertical panel.
Very logical. NEVER try to remove water or similar from equipment while energized. Disconnect the power source from the circuit breaker or pull out the plug using a leather belt. Tricky situation and you must be very calm in order not to make the situation even worse.
If applicable do it always, if not be very carefully. Gloves and shoes Rule no. Read the single line diagram and wiring schemes — know your switchboard. Act like an electrical engineer, you are not on the beach. Single way PVC conduit 2. Tumbler socket 15 Amp PVC Socket 3. Single way tumbler switch Shaded Lamp 4. Tumbler socket Run Capacitor 5. Pendent Holder Start Capacitor 6. Batten Holder Ampere Meter 7. Angle Batten Holder Volt Meter 8. Piano Socket Aconite Switch 9.
Piano Switch 15 Amp Piano Type Bed Switch Push Switch Tube Light Holder spring side Tube Light Holder star side Ballast Piano 40 watt 5 Amp two way switch Piano Type cut out 10 Amp Fuse Tube Light Starter Three Phase Circuit Magnetic Starter Thermal Overload Relay Single phase circuit Two piano round plug 5Amp PVC Three piano round plug Ceiling Rose 5 Amp Three Way circular base Single Way circular base Flat file 2. Half round file Connecting screw driver 3.
Grip vice Inside circlip opener 4. Triangular file Clamp 5. Square file Electric Hand drill machine 6. Round file Venire chipper 7. Hack Saw frame with blade Nail plugging pliers 8.
Flat chisel 9. File brush Wooden chisel Helmet Triangular chipper Wooden saw Claw hammer Neon tester Ball peen hammer Earth tester Open and spanner Allen key Combination spanner Safety belt Adjustable spanner Hand Gloves Hand grinding machine Hand drill machine Safety goggles Drift punch Centre punch Pin punch Scissors Divider Soldering iron Try Square Sucker Outside chipper Plastic Hammer or soft Steel punch Cross peen hammer Crimping pliers Cable cutter Wire striper Insulation cutter Combination pliers Long pliers Outside micrometer Twist drill pit Flat screw driver Splice Joints 2.
Married Joints 3. Tape Joints 4. Turn Joints 5.
Splice Joints 6. Britannia Joints 7. Tape Joint get 8. Bell hanger Joints 9. Britannia tape Joints Double Cross Joints Pig tail Joints Western union joints 6 Electrical Surface wiring Electrical wiring is generally refers to insulated conductor used to carry current and associated device.
This article describes general aspects of electrical wiring as used to provide power in buildings and structures, commonly referred to as building wiring 1.
Cleat wiring 2. Cross wiring 3. Conduit wiring 4. Batten wiring 5. Channel wiring 6. Information and plans should be independently checked and verified before action.
Anyone installing wiring should also understand some basic safety issues not discussed here. This article is an introductory overview rather than a complete A to Z on rewiring , and assumes some basic electrical knowledge. Some regulatory requirements are mentioned in this article. These apply to new wiring, and in many cases are not requirements for existing wiring.
The Electrical Glossary may be useful. The radial lighting circuit has 3 common wiring options, which may be mixed at will:. Other options are also possible:. Each fuse or MCB supplies one circuit only. One circuit may supply anything from 1 to a large number of loads. Split load CUs have become popular in recent years, and ubiquitous since with the introduction of the 17th edition of the wiring regs.
They usually offer significant advantages over the traditional unsplit CU type. See 17th Edition Consumer Units for more details. Each bank usually having its own RCD. There should also be a master switch that will switch the whole CU.
Split load CUs are recommended, and this article will assume the use of a split load CU. Earthing is a fundamental safety system used in electrical installations. It works in co-ordination with circuit breakers MCBs , Fuses , and RCDs to ensure that an electrical supply can be disconnected quickly in the event of a fault. This greatly reduces shock risk. Most houses have an earth connection supplied by the electricity supplier.
Those that don't generally country houses several miles from the nearest town , use a local earth rod instead. The supplier's earthing terminal or your own earth rod is connected to the CU earth block. Each electrical circuit in the house takes its earth connection from the CU earthing block. In general, ANY cable which is buried less than 50mm below a wall's surface AND is NOT mechanically protected, or wired in one of a number of specialised cable types that incorporate an earthed screen must have 30mA trip RCD protection.
New installations will have two or more RCDs. Older ones may only have one or none. RCDs reduce the risks of injury from electric shock they don't eliminate it completely , however they can also introduce reliability and issues of their own if not used in an appropriate way.
Historically RCDs were usually only used on some circuits rather than all.
With a local earth rod , the situation is different in that all circuits must be RCD protected, since a local earth rod is not usually a sufficiently good earth on its own to clear all earth faults.
So RCDs are used on all circuits even in older installations. This is not an ideal arrangement, as a large earth leakage fault on the non-RCD side will cause complete power failure, and sometimes inability to reset the power. RCBOs allow individual circuits to be protected by their own RCD without any risk that a fault in an unrelated circuit could cause it to trip.
However protecting all circuits like this is more expensive.
See 17th Edition Consumer Units for details. If any neutral wire is connected to the wrong side, the RCD will trip. Historically, installations using a supplier earth connection will run some circuits directly off the non RCD side of a CU. These include:.
All socket circuits, should have RCD protection since Plug-in are the source of almost all electrocutions. Modern installations will typically provide additional RCDs so that vulnerable circuits i.
Sockets may be wired on ring circuits or radial circuits. Mostly rings are used, as they use less copper for most circuit layouts, they have safety advantages over radial circuits sometimes debated , can provide more power, and cover more floor area per circuit. Sockets are on 32A ring circuits in most house installations. These use a ring of cable ie a loop , so that at the CU 2 cables are connected to the MCB instead of 1.
An unlimited number of sockets may be connected on each ring. One ring circuit per floor is a fairly common arrangement, but by no means the only option.
Larger houses generally have more rings. Its also common to have a ring dedicated just for sockets in the kitchen since that is where you will find many of the highest power consuming appliances in a modern house. Spurs are permitted, but sockets should be included in the ring rather than spurred wherever practical. Spurring is best only used for later additions to circuits. Spurring sockets prevents the easy later addition of more sockets in some positions, as a spur may not be spurred off a spur.
Spurs also prevent the addition of more sockets at existing spurred positions, whereas a practically unlimited number of sockets can be added where a socket is in the ring. Bear in mind the number of sockets wanted has risen greatly over the years, and can only be expected to rise further. Radial socket circuits are used less often. These use a single cable from CU to socket, then a single cable to the next socket along the line etc.
Radials use more copper on most circuits, though less cable on physically long narrow shaped circuits. Connection faults have greater consequences than with ring circuits. Minimum and desirable numbers of sockets recommended per room are given. Recommended numbers are inevitably a matter of opinion, and are only recommended as a starting point for consideration. Radial circuits are used for lighting. There is one lighting circuit on each lighting MCB.
Lighting circuits are usually on a 6A MCB or 5A fuse , though 10A can be used with some extra restrictions now removed in the 17th edition of the wiring regs for large circuits.