Source Of Mechanical Energy Engineering Essay

Source Of Mechanical Energy Enginee adjoin EssayIntro transmission channelion galvanizing railway caral energy is a basic incite of nature and it is angiotensin converting enzyme of our most widely utilize forms of energy. It is a blurbary energy strike lot that we get it from the reincarnation of branch sources of energy, like coal, inhe take a hop gas, oil, nuclear power and otherwise natural sources, which be c whole in on the wholeed primary sources. Many cities and towns were built alongside waterfalls (a primary source of mechanical energy) that turned water wheels to perform work. electric carity consists of the presence of galvanising charges, as well as the flow of those charges. There ar collar forms of galvanicity. unitary form is static electricity, which is the presence of either substantiative (+) or prohibit () electric charges in or on an object, ordinarily a non-con communication channeling material. The second form of electricity is the f low or movement of release electrons finished a conducting material, such as a surface wire, toward an empyrean of imperative electric chargesElectricity appears in two forms alternating flow (AC) and direct cover versionical (DC). Direct modern does non change directions the electron flow is endlessly from the negative pole to the positive pole although as we menti unrivalledd before, the electrons themselves dont really move, its the holes that be created that move. Direct current is almost always what is apply inside of electronic devices to power the various internal comp hotshotnts, nevertheless it is a harmful thing in audio signals, which ar alternating current. alternate(a) current (AC) electricity is the type of electricity unremarkably expenditured in homes and hatfulinesses throughout the world. While direct current (DC) electricity flows in unrivaled direction through a wire, AC electricity alternates its direction in a back-and-forth motion. The dir ection alternates between 50 and 60 times per second, depending on the galvanic placement of the country.AC electricity is created by an AC electric informant, which determines the frequency. What is special about AC electricity is that the voltage so-and-so be readily changed, thus making it much suitable for long-distance contagious disease than DC electricity. But in any case, AC put up employ capacitors and inductors in electronic gory, allowing for a wide range of applications.Direct current or DC electricity is the continuous movement of electrons from an ara of negative () charges to an argona of positive (+) charges through a conducting material such as a metal wire. Whereas static electricity sparks consist of the sudden movement of electrons from a negative to positive surface, DC electricity is the continuous movement of the electrons through a wire.A DC spell is infallible to allow the current or steam of electrons to flow. Such a circuit consists of a sour ce of galvanizing energy (such as a battery) and a conducting wire transmitning from the positive end of the source to the negative terminal. galvanising devices may be include in the circuit. DC electricity in a circuit consists of voltage, current and resistance. The flow of DC electricity is similar to the flow of water through a hose. galvanising Wi call up galvanic fit body is a network of electric conductors for carrying galvanizing current to the galvanizing equipment convoluted. This method is relate to the fit out formation for mental synthesiss in Malaysia. In Malaysia, the electric wire body is subject to the rules established by the Energy Commission as provided on a lower bag the Electricity lend Act 1990, Electricity Regulations 1994, the MS IEC 603642003 Standard galvanizing Installations of Building, MS 19362006 Electrical Installations of Building Guide To MS IEC 60364 and the MS 19792007 Electrical Installation of Building Code of Practice. Wi isthmus organisations intentiond in Malaysia is very similar to the galvanizing wiring standards accustomd by the United land but by the standards of the wire conductor already changed.NEW townspeople DEVELOPMENT SDN BHD PROJECTThe high- elevation edifice electrical organizationFor The raw Town increment Sdn Bhd project, this expression was a high-rise commercial building. The building comprises of 4 storey basement parking and 7 storey shop complex and the rest argon delegacys lot. So, for the electrical knowledgeability should at both outrage there were a depend of electrical panels to serve all the luminousness and power requirements on that floor including the inflammation, switched socket outlets, toilet exhaust fans and anything else. nearly atomic build 18as of the position utilise an open floor patch systems so below floor t chairking was in like manner used here. Besides, a some of the panel were determined inside the riser pipe inhabit of each floor. However, since each was a striking argona some panels conducted to be located at the office area. Wiring directly from the electrical riser would be unnecessarily similarly long.Therefore, the electrical consultant locates these electrical panels along the corridors throughout the building. The design clothes designer was requested to provide small rooms to house the panel. Alternatively, small electrical cabinets with lockable doors and sufficient work access and ventilation would be acceptable.If the planned building is very high example like 40 storey office building or in cases where heavy interferences are located at higher directs of the building, it may be necessary to provide substations at the higher directs of the building.For the 40-storey office building, an 11/415 kV substation may be necessary at star of the upper floor. It may be located at twentieth floor, for example. All the electrical substation room spaces as explained earlier pull up stakes then adopt to be provided except the dominances electrical rooms. The floors of this substation would then need to be specifically knowing by the appointed structural consultants to speak the loads of all the substation equipment.establish on the structures and other factors was related. We extend the generalisation of electricity for this building using the radial tire system and ring of import system. Because its easier to chief(prenominal)tain and simple system for the design and construction. In addition, using the revolt chief(prenominal) scattering system is important because the building is more than 5 levels. So, to distribute electric power at every level is allot to use the move up main for the building.BasementA basement is 1 or more floors of a building that are either whole or partially below the design floor. Basements are typically used as a utility space for a building where such items as the furnace, water heater, circuit fall iners panel or fuse box, car park, and mien- teach system are located so as well are conveniences such as the electrical dissemination system, and railway line television dispersal point.In British English the word basement is used for surreptitious floors of, for example, department stores but is used for a space below the ground floor of a house only when it is habitable, with windows and (usually) its own access. The word basement is used to apply to any such large beneathground room. Subcellar is a cellar that lies advertize underneath.Based on the planned building project, the level of 1st to 4th is the basement. In part this is a car park. Therefore, we press the installation of electricity in the area using ring system. go system is ideal because in this part do not use electrical appliances and many others.Basement car parks.jpgBasementpendlehill1.jpgBasement closed chain Main System in BasementA ring main wiring circuit is the alternative to a radial wiring circuit. In a radial wiring circuit, the wiring starts at the circuit breaker and colligates to each device on the circuit (fans, outlets, lamps, etc. in turn. When it reaches the last device, the wiring simply ends. sinker main wiring goes whiz step further instead of ending the wiring at the last device it pulls more wiring back from the last device to the circuit breaker, completing a loop. Ring main wiring is required in some places, and extralegal in others.The main advantage to a ring main system is smaller wiring. Since each device on the ring has two overheated wires connecting it to the circuit breaker (one on each side of the loop), smaller wiring can be used to safely carry the electric current. small wire is both cheaper and easier to work with. It bends more easily, can be pulled around corners with less effort, and is easier to fit into the screws and connectors you need to attach it to.One other advantage is wiring distance. Wire has some small amount of resistance, and the semi stable t he wire goes to reach the device it is powering, the more resistance it has. This takes in a voltage drop over the length of the wire run (by Ohms Law), which could relate the operation of your electrical devices if it drops too low. The maximum distance from the circuit breaker around the ring is the midpoint of the ring, while the maximum distance in a radial circuit is the end of the chain. In this manner, the ring frame-up effectively cuts the distance to the farthest device in half.The radial system does have one advantage over ring main. If a break were to occur somewhere in the wiring loop of a ring main system, you wouldnt know it. Everything would still function normally because it is still fork out from one end. However, this nitty-gritty that if you took advantage of the ability to run smaller wiring (and everyone does), your wire is now undersized for the current it is expected to handle because the system is no longer powered from two wires, only one. This can resu lt in overheating of the wires, which in turn breaks down the insulation and can start a fire.In electricity tote up, a ring last(a) circuit or ring circuit (informally in addition ring main or just ring) is an electrical wiring technique developed and to begin with used in the United Kingdom that provides two independent conductors for live, soggy and over protecting(prenominal) earth (ground) within a building for each machine-accessible load or socket.557px-Ring_circuit.svg.pngring distributionRing Main distributionSize of cable used to ring system is 2.5 mm2.Installation Rules of Ring System at basementRules for ring circuits say that the cable military rating essential be no less than two thirds of the rating of the protective device. This means that the take a chance of sustained overloading of the cable can be get hold ofed minimal. In rehearse, however, it is extremely uncommon to encounter a ring with a protective device other than a 30 A fuse, 30 A breaker, or 32 A breaker, and a cable size other than those mentioned above.The IEE Wiring Regulations (BS 7671) permit an unlimited number of socket outlets to be installed on a ring circuit, provided that the floor area served does not exceed atomic number 6 m2. In practice, most small and medium houses have one ring circuit per storey, but for this building should having more.An installation designer may determine by experience and calculation whether additional circuits are required for areas of high inquire for example, it is common practice to allot kitchens on their own ring circuit or sometimes a ring circuit shared with a utility room to avoid putting a heavy load at one point on the main downstairs ring circuit. A heavy concentration of load close together on a ring circuit can cause minor overloading of one of the cables if near the end of the ring, so kitchens should not be pumped(p) at one end of a ring circuit.Unfused spurs from a ring wired in the same cable as the ring are a llowed to run one single or double socket (the use of two hit was previously allowed but was banned because of people replacing them with doubles) or one fused connection building block (FCU). Spurs may either start from a socket or be joined to the ring cable with a wholey box or other approved method of joining cables. trey and bigger sockets are generally fused and therefore can also be pose on a spur.It is not permitted to have more spurs than sockets on the ring, and it is considered bad practice by most electricians to have spurs in a new installation (some think they are bad practice in all cases).Where loads other than BS 1363 sockets are attached to a ring circuit or it is desired to place more than one socket for low power equipment on a spur, a BS 1363 fused connection unit (FCU) is used.In the case of fixed appliances this bequeath be a switched fused connection unit (SFCU) to provide a point of isolation for the appliance, but in other cases such as feeding multi ple lighting points (putting lighting on a ring through is generally considered bad practice in new installation but is often done when adding lights to an existing property) or multiple sockets, an unswitched one is often preferable. obtain ComplexBased on commercial building a project was planned by the New Town Development Sdn Bhd. A 40 storey high building will put the shopping complex of seven stories are starting at level 5th to 11th. Thus, the electrical installation for this we propose to use a radial system.We feel the radial system is suitable for shopping complex. Because there are a lot of use of electrical appliances such as lights, air conditioners and so on. In addition, the radial system is unaccented to designed, built and maintained.Shopping Complex at level 5thShopping Complex at level 5th 8thOfficesIn this building project, a center of 29 levels will be provided for offices start from level 12th to 40th. Based on this, we agreed to use the same method of elect rical installations such as shopping complexes, namely the radial system. This method is ideal because it is easy to maintain. In addition, if there is damage to the wire. It is easily known and easily repaired than the ring system.Office radial tire System in Shopping Complex and OfficesThe radial system is widely used, economical systems often found in low-load niggardliness areas. To reduce the duration of interruption, overhead bird confluents can be protected by automatic reclosing devices located at the substation or at various locations on the feeder. This device reenergizes the feeder if the fault is temporary. To further reduce the duration and design of customer interruptions, sectionalizing fuses are installed on branches of radial feeders allowing unaffected portions of a feeder to remain in service. radial tire distribution systems are the simplest systems to plan, construct, and maintain, but are also the least reliable because of the radial nature of the design c reation served from a single source at a time. If any part of the system experiences a failure, some or all of the customers served by the radial feeder will be without power until a repair is completed. fair design, lower cost, and decent reliability are the distinguishing characteristics of the RDS.An auto-loop distribution system is a special type of radial distribution system and is differentiated by having two feeders that tie to a customer load. The auto-loop system automatically senses the pass of one source of voltage and quickly and automatically switches the load to the second feeder. This type of system adds reliability benefits by keeping outages to a few seconds (or less) but the added cost of having two currys of utility equipment at one location, could be as high as hundreds of thousands of dollars for each installation.radial distributionRadial SystemRadial system distributionSize of cable commonly used for circuit radius is 4 mm2 uprise Main distribution for com mercial buildingFor multi-storey buildings such as this are ideal to use the rising system. This is because, to ensure that each level of the building is fully supplied with electricity from renewable sources of electricity.A riser is a feeding cable or pipe giving supply to upper floors of a multi-storey building (high rise building). The above picture shows a typical installation of bus duct rising mains in the riser room at individual floor of a high rise building (The Bus duct was interpreted in the riser room at one of the upper floors of a high rise building). Most of the major components of a bus duct riser system.In electrical plant life, a riser is a set of cables the supply the upper floors. The feeding cables rise up straight to the top floor. Then at each floor a strike-off unit is connected so electricity can be supplied to that floor (for this project, we propose the radial distribution system). An alternative is to run one individual set of cables to each floor. Then there would be many cables that need to be installed the number of which is directly proportional to the number of upper floors.There are actually cardinal risers, first one is the normal main electricity supply. This supply is just the normal authority supply like the one you have in your house. The 100A work stoppage off unit is for this riser. The second tap off, which is one of the 60A units, is what is called essential supply, or emergency supply. It is a normal authority supply like the one you have from the 100A tap off unit above.However, it is also backed by a standby diesel generator. This means that if the electricity supply from the authority distribution network fails due to puzzle with their underground distribution cables or whatever, the standby electric generator would commission in and switch in the locally generated electricity to this electrical riser. hulking capacity electric generators are expensive.Therefore, it is not economical to supply all electrici ty needs in the building from this generator. That is why separate electrical risers are used, and the normal riser is not backed by the generator supply. The third tap off unit (the second 60A unit) is for the air conditioning system. It is quite common (and is considered a better design) to have a separate feeder cable for the air conditioning and mechanical ventilation (ACMV) system in a large building. That is the reason for the third electrical riser here.rising main detailRising Main DistributionRising main distribution is use to distribute 415v 3-phase electricity from main distribution board to all floors. The copper vertical bus bars which run up in electricity cable riser. The vertical duct or trunking to the height of the building. To prevent the spread of fire and smoke, fire barriers are compound with the bus bar chamber at each compartment floor level.One more point to note here is that some office buildings use the generator-backed supply example like essential suppl y to feed the electrical riser for the air-conditioning system. With this arrangement, ACMV equipment that need to continue operating even during the mains failure do not need to be connected to ESSENTIAL supply riser, which is why it is given a separate riser in the first place. pursue the large flexible conduits coming out from the bottom of the tap off units and connect to the orange-colored electrical trunking. Some installations use rigid metal trunking for this purpose. Cables are run from a tap off unit into the flexible conduit to go to the orange metal trunking. They run inside the trunking to connect to the respective sub-switchboard.The switchboard for the air conditioning system is normally located inside the AHU room of that particular floor. From the sub-switchboards, separate outgoing cables are run inside the trunking to connect to separate distribution boards (DB) on that particular floor. Even though electrical installations at hospitals are relatively much more co mplex than the office building above, the installation at their hostel and staff quarters buildings are usually very simple.httphttps://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjaJQUSro8yaVqC4GWUgvBfBVQaiPInAYnWjupq8KPdKsZXhyphenhyphen1vOt2SoGicjI8F-3ufIoj3_NqXCPxzPAFpmxlQ7pSz-t3W97hb-P-te6drrh8PhX-AQr2HsGmcMvrxpUW1la_kNyOHLR_T/s320/Floor+Sub-switchboard+Picture.JPGTypical bus duct rising main at individual building floorshttphttps://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhXTDTPFWNQ2cIthgnRd-wy8NFGvKUUuzskNl-Pck2U2-MH7SGew8mR-4fu0c8xwvsVXCkpDlY76dLLP2bxNViqf3_gIy3tn8srhbcvAck8xtO2hfBswZG2V7ovA3e10tKvR5lOAkEoLsBh/s320/Electrical+Busduct+Riser+Picture.jpgThe electrical riser roomBasically, there only two new components at each riser, which is the Termination Box (Feed In Box) and the incoming cables that terminate into the conclusion box. The generator-backed Essential supply cables need to have red colored insulation. It is because this supply is part of the fire emergency system of the building.A fire-rated cable must be able to continue operating for a certain number of hours during fire before it fails. This is the requirement. It used to be MICC (mineral insulated copper cables) cables that play this role, but now people use mo stly the fire-rated cables for this purpose except in very special installation condition. The fire-rated cables are cheaper, easy to install and maintain.The black-colored cables are from the Normal supply. That means the other ends of the cables are connected to the Normal run main switchboard. While the red cables are connected to the Essential Supply main switchboard. Which means the Essential Supply main switchboard is the one that is backed by the standby electric generator.httphttps://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiv5Wgczhi7mBNLqfhj93ITEmD6lRqXhmAHgPS3NkVd_KDHuAjMMNw3lDTquWwp3T-Q4Ha7CVE0lVtAqyCjQCADTh_eG5mImefiltfBQp_XXSyYCRObwhWBGvDdIknNeO6k36bQtIrdKf9r/s320/Busbar+Trunking+Picture.jpgThe bus duct risers at riser roomhttphttps://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgiHzPDwAJh6rsLjuc2aFXwoGfo4C4mj_uS9x77raOy8cYw3uHVtxFl6LgY7OaEcJ1pjh1i19Y-lswZ3wo6DGPigLLIyRj8vnYbfKTmuljZiDAQSOd1bgAFbie7rdUlu0spjhCT280x02wn/s320/60+A+TPN+ romance+Off+Unit+Image.jpgThe front view of one of the 60A TPN tap off unitshttphttps://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjNy_J9RvlMqnZ9yWZ3hWtLrZfxNbMo22WHJdb7ZK8eeZ9JxvmNKO1orN1OtNxtLKHW4TRN9ckiwSbRjULoe7ler8HdSV7LzcXe0iCiL0XRqskBrdcAmkFDMS2g5gQAeNOdHuCWyIzQk3mi/s320/Busduct+Conductors+Arrangement+Image.JPGA closer view of the vertical bus duct showing the arrangement of the conductors insideCabl es and buswaysA passenger vehicle trunking system comprises a set of conductors protected by an enclosure. Used for the transmission and distribution of electrical power, busbar trunking systems have all the necessary features for fitting connectors, straights, angles, fixings, etc. The tap-off points placed at regular intervals cook up power on hand(predicate) at every point in the installation. A busbar trunking is placed at the offices.http//www.electrical-installation.org/w/images/c/c9/FigE37.jpgBusbar trunking system design for distribution of currents from 25 to 4000A.The various types of busbar trunkingBusbar trunking systems are devote at every level in electrical distribution from the link between the transformer and the low voltage switch switchboard (MLVS) to the distribution of power sockets and lighting to offices, or power distribution to workshops.http//www.electrical-installation.org/w/images/3/32/FigE38.jpgRadial distribution using busways at the officesThere ar e essentially three categories of busways that we proposed for the commercial building, that is1) Transformer to MLVS busbar trunkingInstallation of the busway may be considered as permanent and will most likely never be modified. There are no tap-off points. Frequently used for short runs, it is almost always used for ratings above 1,600 /2,000 A, i.e. when the use of parallel cables makes installation impossible. Busways are also used between the MLVS and downstream distribution switchboards.The characteristics of main-distribution busways authorize operational currents from1,000 to 5,000 A and short-circuit withstands up to 150 kA.2) Sub-distribution busbar trunking with low or high tap-off densitiesDownstream of main-distribution busbar trunking, two types of applications must besuppliedMid-sized exposit (industrial workshops with injection presses and metalwork machines or large supermarkets with heavy loads). The short-circuit and current levels can be fairly high (respective ly 20 to 70 kA and 100 to 1,000 A).Small sites (workshops with machine-tools, textile factories with small machines,supermarkets with small loads). The short-circuit and current levels are lower (respectively 10 to 40 kA and 40 to 400 A). Sub-distribution using busbar trunking meets user needs in terms ofModifications and upgrades given the high number of tap-off pointsDependability and continuity of service because tap-off units can be connected under energized conditions in complete safetyThe sub-distribution concept is also valid for vertical distribution in the form of 100 to5,000 A risers in tall buildings.3) Lighting distribution busbar trunkingLighting circuits can be distributed using two types of busbar trunking according to whether the lighting fixtures are suspended from the busbar trunking or not.Busbar trunking designed for the suspension of lighting fixturesThese busways supply and support light fixtures (industrial reflectors, discharge lamps, etc.). They are used in supermarkets, department stores and warehouses. The busbar trunkings are very rigid and are designed for one or two 25 A or 40 A circuits. They have tap-off outlets every 0.5 to 1 m.Busbar trunking not designed for the suspension of lighting fixturesSimilar to prefabricated cable systems, these busways are used to supply all types of lighting fixtures secured to the building structure. They are used in commercial buildings (offices, shops, restaurants and etc.), especially in false ceilings. The busbar trunking is flexible and designed for one 20 A circuit. It has tap-off outlets every 1.2 m to 3 m. Busbar trunking systems are suited to the requirements of a large number of buildings.industrial buildings garages, workshops, farm buildings, logistic centers, etc.Commercial areas stores, shopping malls, supermarkets, hotels, etc. tertiary buildings offices, schools, hospitals, sports rooms, cruise liners, etc.Examples of Canalis busbar trunking systemshttp//www.electrical-installation .org/w/images/3/39/FigE40.jpg pliable busbar trunking not capable of supporting light fittings Canalis KDP (20 A)http//www.electrical-installation.org/w/images/5/5c/FigE41.jpgRigid busbar trunking able to support light fittings Canalis KBA or KBB (25 and 40 A)http//www.electrical-installation.org/w/images/b/b3/FigE42.jpgLighting duct Canalis KBX (25 A)http//www.electrical-installation.org/w/images/a/a5/FigE43.jpgA busway for medium power distribution Canalis KN (40 up to 160 A)http//www.electrical-installation.org/w/images/5/52/FigE44.jpgA busway for medium power distribution Canalis KS (100 up to 1000A)http//www.electrical-installation.org/w/images/4/47/FigE45.jpgA busway for high power distribution Canalis KT (800 up to 1000 A)Trunking and Conduit System in Commercial Buildinghttphttps://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiMs1BpBysMzNB_aoZkaH7F8RNLuxMW_w5YHpDMMGxLyKD3kZ9sn5RSG8VQkhyphenhyphent9kUtQGmILLaYD5E-Ugap-TLriXWMr0N42K9VIKuWsWEo2akqc-kVjxafnx7kms3P4k5_IB7HS01rD9L_/s320/Mechanical+and+Electrical+Coordination+Picture.jpgConduit and trunkingThis picture shows how the electrical conduit and trunking i nstallation should be coordinated with water pipes on the building. Trade sub contractors (water piping sub-contractors, electrical sub-contractors, call back cabling contractor, computer network contractor and others) must not be allowed to proceed with the installation of their individual go and equipment on the first come, first served basis.Prior to the commencement of the installation works by trade sub-contractors, a set of proper coordinated drawings, endorsed by all relevant parties, should be made available to all the sub-contractors involved in a particular area.httphttps://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjgLht3U-qEL91j6t3u6ge6QovX6dlT6EjjYkJu2dfmBBXbxy1uvkRZXh4Om_Fi7yy2Ba827gVA8HslBjA04k_wbWM1JI5PTto1kKMKaJovRBAD0ayGu34eI0engWrErpOZn2npH8c6Apjf/s320/Below+Slab+Trunking+Installation+Photo.jpgElectric trunking lead below soffit of a concrete floor slabThere is no electrical installation work of a significant size can be done properly without the use of an electric trunking. A trunking is a larger size of a conduit. When you need to run a number of electric conduits along each other for a significant distance, then consider using a trunking in place of the conduits. There are so many sizes you can choose from.The above picture is an example of a trunking installation above ceiling level, under the soffit of the concrete floor slab. we also labeled some of the other services there for the benefit of those non-electrical readers who need pictures like this for reference, to know what is what among the myriads of pipes, conduits and trunking running above the ceiling level.httphttps://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi1aW4j7dN46rdbVv5FAGA004CxT2Ht1iizOPG1nXUjoTDgL-_HFcJfes4N2jHjCnsb6-oXv1x26HpDNFUc4jyeOLQJHBDWbBJofthMcSncRQoHBINLO8rmCiPBzxTaNZWTIuQbK8W8dsJn/s320/Wiring+Trunking+Picture.jpgElectrical trunking in and out of the electric panelsThere are electrical trunking connecting the panels at above and below the panels. But the box-up walls have hid them. This picture is metal trunking. In future, the maintenance electrician would need to access and open the cover of the trunking in the repair and upgrading works. Therefore, a means of access is required, which was not provi ded at all at the mock-up unit.httphttps://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiPwBWR1mvpn_CbO2nUXAyphv1SPgkoyI8jUNR89gN_HZ4OzS4fwXOteSsH01h4KHMK4cjgxiORSPutueDcbFw_S6ojlZKZJ48UbIjj8eW4Dna1okeOE6Wej847MIbXRUVb8S9j61b7BYr8/s320/Underfloor+Trunking+Installation+Photo.jpgUnder floor trunking installationThe under floor trunking system has been around for a long time. An under floor trunking system is an alternative way of providing the dedicated routes to run electrical cables, telephone cables or any other wiring cables. An 11KV cable is not a wiring cable. A 25 sq.mm electrical feeder cable to supply an 11 KW fire pump panel is not a wiring cable. The 1.5 sq.mm cables that are used for wiring the office lights are categorized wiring cables.httphttps://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgYXCL742MTgshgTWY_g0-BHbrSqv27LME_lAF8HQzLq1NCKYojqo25ANrFa4lza5-1ZdEzRbMLP0qxiy48JjOufdh7cvGU5cZiAiEILM4fej8agzN2BmOYxCHWK2sfeMzcrst-S-QBI6u9/s320/Surface+Conduit+Installation+Picture.jpgSurface conduitsThe conduits are used to protect the wiring cables that carry the electrical current. Electricity is dangerous. Even though the electric conductors that carry the current is insulated by some PVC blanket materials or whatever, the covering material is not strong enough to protect the cable from damage.When the covering is damaged, the electrical conductor inside may be open(a) to touch or it can also unintentionally come into meet with things that can carry electric current. This scenario would present a high risk of electric shocks.Therefore, we protect the electric cables so that they do not present the dangers of electric shocks to people (or animals). A second reason to protect the cables is to make sure the electrical system stays reliable. When the cable PVC covering is damaged, the conducting metal can come into contact with other metals that are in contact with earth.httphttps://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgXzjSVNu9YkaT1k9DVIVjRnKqS0Ra6wRB4Rw4S9dCzDJ3r2hnhZsI4FPvxngyXLIS3g5bRd5yCjz2csmAGSnZsXlNRI7aJabH1XhY5ODqJ77rxAVXrFltY9v-0cgLZGSv8Ppq7UmKVTYxG/s320/Overhead+Projector+Installation+Picture.jpgA motorized overhead projectorThe electrical contractor produced a mock-up unit of the installation bracket for motorized overhead projector. The overhead projector was for meeting rooms (offices level). There were ab out thirty units to be installed through the building.httphttps://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjGD1MBuVHtQOWYywVC8jWp582FGZqNUMgupCsfbqdYYn9j4R92w_kL-HyLO-VruOilWjxd_pceiLfg32Nqvvbb-oNudbHSRWc1raY_QK3Vf1s_RqAAmxo_IYKYZVID0grtEt3HHqtywZRb/s320/Feeder+pillar+picture.jpgCompound lighting feeder pillarA building construction of significant size is usually not complete without at least one small open-air(prenominal) weatherproof feeder pillar.High rise building electric closetshttphttps://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEijlznmoR_YQqv-JgVdKh8Jcuzd31UUvvOyOPI3ii7xJ7yFAXjpixlGgg8H3EYANLLfb5iSo0yETxiIRAoyU3Iwut-u5EEKnqy29BpoCi8_JnGvKD3dMTv71YGcSHwnKZyxk2M0e4EUS9Yu/s320/Electric+Closet+Picture.jpgElectric closetThe electric closet in the pursual pictures has been done for a multi storey bui