The swa is supplying the outdoor consumer unit with a line and neutral only. About 42% of these are electrical wires, 31% are power cables. Nexans armour earthing kits are specifically designed for terminating armour wires swa and awa where glands arent the preferred option e. We contribute to the industrys high levels of efficiency with. Brass indoor gland suitable for all types of steel wire armoured cable swa, providing mechanical cable retention and. Oct 29, 2009 best method to terminate swa to plastic c. Lesson six proper cable termination practices are vital for the complete and accurate transfer of both analog and digital information signals. Nov 06, 2016 hi, i had a discussion with another electrician on a job regards earthing an swa on a metal isolator and consumer unit. Code of practice for the electricity wiring regulations 2015 edition. Such high voltage cables have metallic sheaths or screens surrounding the conductors, andor armour and metallic wires surrounding the cables. Domestic electrical installation earthing and circuit protection part 2 in part 1, i left the tale at the point where the dno had provided a supply to the premises, most probably with a tncs earthing scheme for a new build. The cores are made from plain annealed copper strands, the bedding and sheathing are made from polyvinyl chloride and, as stated previously, the armour is made from steel. Charles endirect central earth terminal cet for steel. Alco cable gland tutorial selection and fitment of hazardous area.
In order to obtain optimal result, two crosses exist. Steel wire armour cable bs5467 swa is a hardwearing power cable, with mechanical protection, designed for the supply of mains electricity. Wire, cable, and terminations wct 1design guidelines and standards basis of design this section applies to the design and installation of wire and cable systems and terminations. Swa cable can be referred to more generally as mains cable, armoured cable, power cable and booklet armoured cable.
Commonly known as swa cable, the steel wire armoured cable is a power and auxiliary control cable, designed for use in mains supply electricity. It will supply a continuous flow of electricity to the intended target, due the galvanized steel overlapping the center cable. After cheap swa gy, brown, blue cores cable online. The earthing functions that can be performed by the armouring of a.
Swa is suitable for indoors and outdoors, in cable ducts or directly buried in the ground. Here youll find current best sellers in books, new releases in books, deals in books, kindle ebooks, audible audiobooks, and so much more. Sorry to be thick but why cant you gland swa to plastic boxes if you ensure earthing continuity with fly leads and. Steel wire armoured cable swa is a hardwearing power cable designed for the supply of. Cet central earth terminal is the street lighting industry standard for stand off cable glanding of xlpe steel wire armoured swa cables up to 70sqmm. All these applications still require a method of terminating the armoured cat5e cable so we are able to connect our end point. Armoured cable is covered by a metal sheath which protects the cable from water and extreme temperatures, allowing it to be used in underground or external projects as well as indoor applications. Leaving the switchfuse are the three cores sheathed of a 10mm swa cable but not the armour which lead into an adaptable box. Free next day delivery available the electric cable company gb ltd. Earthing nut vs conventional banjo and lock nut for cable glands.
Jun 01, 2009 steel wire armoured cable, commonly abbreviated as swa, is a hardwearing power cable designed for the supply of mains electricity. Steel wire protected cable, mandatory for outdoor or buried use unless. The use of a third core as a cpc in swa cable isnt an alternative to using the swa as the earth. Guide to installing steelwired armoured cables technique. May 11, 20 earthing requirements of cable glands used on swa cables posted on may 11, 20 by phil when cable glands are used to terminate swa steel wire armour cables, the gland must be able to provide earth continuity from the termination of the armour through to the body of the equipment, either via the enclosure itself if it is metallic, via a. Earthing including central earth terminal system components the charles endirect range of earthing components is comprehensive and caters for all standard size cables. Generally, the bend radius is around eight times the overall cable diameter. Earthing requirements of cable glands used on swa cables posted on may 11, 20 by phil when cable glands are used to terminate swa steel wire armour cables, the gland must be able to provide earth continuity from the termination of the armour through to the body of the equipment, either via the enclosure itself if it is metallic, via a. About 19% of these are electrical wires, 36% are power cables, and 0% are power distribution equipment. The swa circuit cable was disconnected for safety reasons. Use swa as cpc, a guide to the acceptability of steel wire. Steel wire armoured cable swa is a highly reinforced power cable. Standards the cable is manufactured and tested according to bs 5467. The earthing is obtained from an earth rod and the cu, hot tub and other peripherals are all ttd.
Central earth terminal cet for steel wire armour swa cable termination. Electrical wiring in the united kingdom is commonly understood to be an electrical installation. U discussion in electricians talk started by orca, oct 29, 2009. Each armour earthing kit contains an aluminium under armour support ring, stainless steel worm drive clip, mastic tape, tinned copper braid and heat shrink tubing for environmental protection. When an earth fault occurs at an installation, the resulting. The books homepage helps you explore earths biggest bookstore without ever leaving the comfort of your couch. Raychem heat shrink termination kit medium voltage copper. Huge range of armoured cable accessories available at qvs. Steel wire armoured cable, commonly abbreviated as swa, is a hardwearing cable designed for the supply of mains electricity. The armour provides mechanical protection allowing the cable to withstand higher stresses, be buried directly, and can be used in internal, external and underground projects. Link box is electrically and mechanically one of the integral accessories of hv underground above ground cable bonding system, associated with hv xlpe power cable systems. Our range includes overground and underground armoured cable junction boxes, resin joint kits, gland packs, cable cleats, earth nuts, warning tape, cable clips and much more. Pmetncs earthing system, so no adequate means of earthing in the garage.
In urban areas, high voltage underground cables are commonly used for the transmission and distribution of electricity. The suppliers earth is only being used to protect the feeder cable by using the third core and connecting it to the armour. Swa cable, which means steel wire armoured is heavy and difficult to bend which helps to reduce the risk of pinching and damage. It is one of a number of armoured electrical cables which include 11 kv cable and 33 kv cable and is found in underground systems, power networks and cable ducting. It is cancelled induced voltage in the screen at every major section joint. Swa armoured cable everything you need to know edwardes. How not to terminate 3 core swa cable improving your world. A global solutions provider, prysmian offers a wide range of integrated. For the purposes of this example we will terminate some swa cable insulated 4mm. Yes those new glands at denmans are great,just tighten by handalso at denmans today i spied a new earthing clip for copper pipe,just clips on by the look of. This method used where continuous sheath runs from earthed termination to. The scale and speed of modern mining requires versatile and dependable electrical power supply, which can be rapidly extended and maintained.
To create a moisture seal at ground wire exit in highvoltage joints. The latter point is significant, as its best to try and stage overload trips so that. Steel wire armoured cable consider the construction of swa cables, starting at the outside diameter od there is a pvc or xlpe sheath that covers the entire cable that is required to have an environmental seal. Steelwire armoured swa cables commonly serve as distribution. During earth faults applied to directly earthed systems, these metallic paths.
Observe cable bend radius limitations and follow lug manufacturers installation procedure. Swa cable, complete with brass lock nut and pvc shroud. Compression glands, cets, saddles, terminal blocks and. Swa earthing glands are used by street lighting and traffic signal companies the cable glands meet and exceed the bsi torque test for excellent electrical installation practices and earthing integrity. This requirement would preclude the termination of the cable ends of swa with bonding clamps for the reason given above.
This earthing is in case the cable is damaged, the armor is never used as the earth on the circuit. A wide variety of earthing cable specification options are available to you, such as conductor material, conductor type, and type. Earth clamps for armoured cable due to a restriction on the entry point into the supply area it is virtually impossible to fit a standard earthing gland assy is there a none damaging clamp that can be used to link up the outer sheath to the cu, normal bonding clamps will crush the innerouter cable bit of a spoonerism. High voltage xlpe cable systems technical user guide. Full range of sizes and types of armoured cable and accessories. Current ratings the current ratings are thoroughly presented in era 6930 part v. A wide variety of aluminium earth cable options are available to you, such as conductor material, conductor type, and type. Provide all control wire terminations with approved wire markers that mark the conductor with the terminal number for the wire. Cable earthing conductors shall be copper strip with appropriate section laid in. Figure 1 power supply, motor and earthing connections power supply cables.
Hi, i had a discussion with another electrician on a job regards earthing an swa on a metal isolator and consumer unit. The charles endirect earthing including central earth terminal system components the charles endirect range of earthing components is comprehensive and caters for all standard size cables. Earthing requirements of cable glands used on swa cables. It is known as swa bs5467 cable and it has a voltage rating of 600v. Here, the armour is glanded off but there is no connection to the earthing conductor. The development of high voltage xlpe cable systems goes back to the since then production and material technology have improved significantly, providing reliable and maintenancefree products to the utility industry. Swa cable 4 core is a variant of electrical cable that is protected by a steel wire armour thats just below the sheathing. Domestic electrical installation earthing and circuit protection part 2. Armoured cable can be used for numerous applications which require an uninterrupted and worry free power connection. If you do ever need to pull this kind of cable up, just be aware of the bend radius as it is pulled around corners. Swa 32bw brass swa gland pack with earthing nut 2 per.
Steel wire armoured cable swa is a hardwearing power cable designed for the supply of mains electricity. This heat shrink antitracking termination kit from raychem provides excellent electric insulation, mechanical protection and earthing for medium voltage 36kv 1 core electric copper cables. The inline punch down coupler would have to be the most cost effective option for terminating your armoured cat5e cable. Xlpeswapvc 4core bs 5467 600 v xlpe insulated steel wire armoured and pvc sheathed cable with copper conductors. Adjustable pipe cutter can be used to prepare swa cable for termination into a gland coupler. Protective multiple earthing, is to use 2core swa, with the swa earthed at the supply end but isolated at the load end in an insulated rcd enclosure. Swa cable can be bent around any angle as long as the radius of the bend isnt too tight. The name power cable, however, applies to a wide range of cables including 6381y, nycy, nyyj and 6491x cable. Armour earthing kits outdoor pole termination swa awa cables.
Swa cable steel wire armoured bs5467 dungannon electrical. Earthing kit swa is one of the uks leading suppliers of cable terminations, fastenings, fixings and tools for the electrical and construction industries. The rest of the earthfault loop impedance of the installation consists of the impedance of the phase and protective conductors from the intake position to the point. Steel wire armoured swa cable my life as an electrical. At the other end of the swa cable, the armour is glanded off into a consumer unit. Compression glands, cets, saddles, terminal blocks and gland plates are all available. Insulation displacement connection idc termination is the recommended method of copper termination recognized by ansitiaeia568a for utp cable terminations. Earthing cables 450750 v cupvc single core up to 800 mm2 solid or stranded circular copper conductor class 1 or class 2 respectively, polyvinyl chloride insulation, suitable for operating temperature up to 70 oc, 90 oc or 105 oc. The earthing nut creates a neater looking armoured cable termination and a more reliable earth connection. When designing an electrical installation, one of the first things to. Charles endirect central earth terminal cet for steel wire armour swa cable termination 1. Link boxes are used with cable joints and terminations to provide easy access to shield breaks for test purposes and to limit voltage buildup on the sheath. May 18, 2012 how not to terminate 3 core swa cable.
The distribution board is supplied from the main switchgear at the origin of the installation by an armoured cable. You should consider buying some swa cable if you need something tough that will withstand the unpredictable british weather. Reference can be made to australian standard as 3008 when selecting cables. Example of steel wire armoured cables in a uk installation. The steel armor at a minimum should be earthed at distribution end. How to terminate armoured cat5e cablejoining swa cat5e. How not to terminate 3 core swa cable improving your. Steel wire armoured swa cables commonly serve as distribution. Impact of cable sheath sizing, material and connections upon the. Use of armoured single core cables in hv installations may be the designers choice. Mark where you want to terminate the swa with tape. The armouring is normally connected to earth and can sometimes be used as the circuit protective conductor.
It is one of a number of armoured electrical cables which include 11kv cable and 33kv cable and is found in underground systems. Buy your self a plumbers copper tubing cutter put that around the swa and turn it whilst righting it leaves perfect termination of the steel armoured. Jul 06, 2011 had to terminate some swa so thought id snap shot each step, seen as the question was asked on how to terminate the stuff. Cable manufacturers supply and recommend the termination of their swa cables in glands correctly selected for the individual size of the particular cable. The variable speed drive should be connected to the power supply by means of a cable that is adequate for the current rating of the vsd. If the cable is being glanded at one or both ends the method of putting the earth tag inside enclosure and bending same to connect bonding. Steel wire armoured cable, also known as swa or armoured cable, are multicore power cables which have a layer of steel wire armour. It would also preclude the termination of the cable by inserting it into an enclosure without a gland as the steel armouring earth continuity would not be reliable. I installed the swa, 3core using the 3rd core as the earth, using banjos both ends as u normally would. What we need to look at are products that dont include a direct termination to an rj45 plug. One is transposition of cable core crossing cable core at each section and second is cross bond the cable screens effectively no transposition of screen. The 3m scotchcode swb writeon wire marker book contains selflaminating, write on. You can terminate the swa cable in either a plastic of metal box using an swa gland and earth ring banjo and the third wire should also be earthed. Armoured swa steel wire outdoor electric power cable xlpe.
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