SWA or steel armoured electrical cable (British standard BS5467)is a type of electrical supply cable that as you may have guessed has its own in-built armoured sheath that protects the electrical charge-carrying conductor cable at the core. Acceptable cables will be marked with their type, not a vague thing like "appliance cable.". To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. A TOSLINK optical fiber cable with a clear jacket. Finally, strip the coating from the wires with the wire stripper . Duh, don't know why I thought I could do that". Add any required cable supports (e.g., staples, clamps, brackets). Now you can turn the power back on and check to see that your connections are working. "Mike makes an excellent point about putting a hole in a box designed for NM cable. A small bolt is then pushed up through from the base and through the small end of the banjo. Boxes are not approved for a wiring method unless they have integral clamps.Plastic box tab 'clamps' are rated for NM and nothing else.Metal boxes with internal clamps are specific because of the clamps. ex. The opposite end of the wire is then stripped and then connected into the earth bar of the consumer unit or earthing in the item you are using. I guess I'll just use a metal j-box that accepts NM wiring and also MC, then string a length of MC into the firebox. The optical fiber elements are typically . When it comes to surface mounting armoured cable it should be clipped up securely to a sturdy solid surface using the correct cable cleats. Likewise if there is also a chance that it could get damaged by impact force e.g. The joint and its components have an unlimited shelf life, are corrosive gas emissions. Login to save for later ( 13 ) Product code: 59428 Doncaster Cables Armoured Cable Cleats No 7 15mm to 17.8mm 8.58. This article has been viewed 79,772 times. Repeat for the connections at the other end. We get it, but (1) terrylove.com can't live without ads, and (2) ad blockers can cause issues with videos and comments. If you use a metal box extension on a plastic box, connect the metal extension to the ground wire in the box using a grounding clip and a short piece of wire. JavaScript is disabled. Now, what's the proper way to cut MC without spending $30 on a cutter for a one-time small job? Cut off the paper cover and discard it. is using 6mm armoured cable you should use 6mm earth cable etc. If any particular ad is your REASON for blocking ads, please let us know. Ip65 41a 5 terminal weatherproof outdoor adaptable box 110 x 67 110mm junction bo fix com learn the basics on how to work with metal clad cable pvc accessories wall tee manufacturer from delhi esr 100mm ip56 square electrical world 95 57mm toolstation use armored bx 11 steps pictures thuba ltd plastic abs enclosure waterproof standard sizes zhejiang . During assembling the gland and cable, once its pushed through the item you are connecting to e.g. Enjoy! Thanks. "The cable I used was labeled "14/3 appliance cable":". wikiHow is a wiki, similar to Wikipedia, which means that many of our articles are co-written by multiple authors. Al hacer clic en 'Aceptar' confirmo que estoy de acuerdo con lo antes expuesto, como se describe con ms detalle en la Poltica de cookies de Houzz. The science behind why you don't notch the bottom or top face of a joist is that the highest concentration of stresses are present at the extreme fibers. Remember to bring an earth tail wire out to earth the box and the SWA armour though. The third part, Raceways, includes the rules applying to the installation of all types of raceways.It is divided into a general . Notching in the bottom substantially increases the compression in the top, creates a point of . Most BX connectors have a small hole or slot through which you must show the tab, tip or tail of the bushing, so the inspector knows it is in there. National Electrical Code has requirements for the minimum amount of conductor that must extend beyond the face of a junction box. You can do that as long as you use the correct cable clamp to secure the cable to the box. We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. Step 2: Check the gland pack. How to Connect and Wire up Armoured Cable or SWA Cable, General Building, Self Build and Renovation, Planning Regs, Project Management and Safety, Let us help you find a tradesman local to you, Installing a Consumer Unit Consumer Units Explained, Electric Cable Sizes and Amp Ratings for the UK, Understanding Electrical Cables and Flexes, How to Wire a Junction Box for Socket and Light Circuits, 3-core = 2 different types: 1 brown, 1 blue and 1 yellow/green (earth) or: 1 black, 1 grey and 1 brown, 4-core = 1 brown, 1 black, 1 grey and 1 blue, 5-core = 1 brown, 1 grey, 1 blue and 1 yellow/green. OK, good point. Twist the exposed ends of the same-colored wires together with a pair pf pliers. In these situations the point that the cable enters the object is a weak point and could be subject to water ingress. Splicing onto the existing cable and extending it to a different location is fine, just make sure to splice all the wires together color to color including the ground wire. Be sure to obtain any necessary electrical permits, even if your jurisdiction allows the work to be done by a non-licensed electrician. Thanks! The National Electrical Code prohibits use of BX ( technically named Armored Cable/AC ) in wet locations. 15 Apr 2009 #2 you need to specify if the cable has an earth wire for a definate answer. Rip and Strip the Wire. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. In terms of the earth cable, you should use this should reflect the size of armoured cable you are using e.g. those boxes dont have those 1/2" knockouts in them. 1: Where internal bonding means are provided between all entries, nonmetallic boxes shall be permitted Below, we listed the essential information about the thread nominal size of PG cable glands. wikiHow is a wiki, similar to Wikipedia, which means that many of our articles are co-written by multiple authors. If the armored cable is BX without a copper ground, use a metal junction box and attach the Romex grounds to the metal box preferably with a ground screw and pigtail (stinger). DISCLAIMER: All wallpapers and backgrounds found here are believed to be in the "public domain". a 20A MCB would be fitted in the consumer unit. So that you know the different parts that we will be referring to below here follows a quick breakdown of the different parts of a gland:Different parts of a gland. A metal box can be grounded by AC or metallic conduit, but a plastic box needs a run ground conductor. AC couldn't be used because there would be no way to ground the device ruling AC out immediately. Keep up with tech in just 5 minutes a week! You can easily find spools of BX cable up to 1,000 feet long. Once connected up the electrician then fully tested everything to ensure it was safe and then turned the power back on to run a live test.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[250,250],'diydoctor_org_uk-mobile-leaderboard-2','ezslot_19',815,'0','0'])};__ez_fad_position('div-gpt-ad-diydoctor_org_uk-mobile-leaderboard-2-0');10mm cable from consumer unit connected to armoured cable, 10mm cable from consumer unit connected to armoured cable. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. Using a drill and holesaw, drill out the knockout hole at the base of the enclosure and also any other areas that you intend to have cable entering and exiting.Drilling out knockout using a 19mm flat drill bit, Drilling out knockout using a 19mm flat drill bit. The main drawback is that BX is more expensive. Use it to try out great new products and services nationwide without paying full pricewine, food delivery, clothing and more. A suitable strain relief must be provided to . If you use the correct external clamp you can use any approved wiring method. An SWA Cable Junction Box is a general purpose junction box suitable for all surface applications. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. . All Verified how to connect underground electrical cable suppliers & how to connect underground electrical cable manufacturers have passed our Business License Check, they can provide quality how to connect underground electrical cable products. The reason I'm asking this is an EC friend of mine questioned me because he is wiring a residential garage and is concerned that rodents will chew through NM cable. It may not display this or other websites correctly. how to connect armoured cable to junction box. To prevent issues such as these occurring special joints known as glands must be used. The short aluminum "wire" is the bonding strap and can be cut off. To create this article, volunteer authors worked to edit and improve it over time. OK, that clarifies things for "boxes" what about non metallic cabinets, non metallic gutters/wireways, or other non metallic enclosures not specifically referred to by NEC as "boxes"? {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/c\/c1\/Use-Armored-%28BX%29-Electrical-Cable-Step-1.jpg\/v4-460px-Use-Armored-%28BX%29-Electrical-Cable-Step-1.jpg","bigUrl":"\/images\/thumb\/c\/c1\/Use-Armored-%28BX%29-Electrical-Cable-Step-1.jpg\/aid1662092-v4-728px-Use-Armored-%28BX%29-Electrical-Cable-Step-1.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":" \u00a9 2023 wikiHow, Inc. All rights reserved. Find junction boxes for a variety of amperages and terminals to suit the purpose, and screwless push in connectors. The outer steel wire should also be connected to earth via the glands fitted at each end. What to do With Spare Wires Never cut off a wire that is not being used especially a ground wire. Wickes 4 Terminal Junction Box - White 5A. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. Wickes Exterior Cable Clips - Black 9mm Pack of 50. Junction Box Waterproof ABS . 1/ Piranha / p-nut / lynx nut (expensive on bigger jobs) 2/ Clamp banjo between two nuts on inside (not enough thread) 3/ Traditional banjo on outside with screw through (ruins IP rating, possible plastic deformation over time) The reason there is a 1/2" knockout in that plastic 1900 box is for running larger sized NM cables like 10/3 or 10/4 or an 8/3 wire. This video will help you work with older electrical conduit and junction boxes to connect to modern Romex cable. Extension lead for the shed page 2 design and location uk420 junction bo connection of data control signal cables armored cable 5 essential pieces information you ought to know hensel electric uk ltd enycase pe inlay how use bx electrical 11 steps with pictures code safety violations mr electrician steel wire armoured all need e tech components supplies . The metal armor can also act as a part of the earth grounding in combination with the bonding wire. I went and looked, it was the 1999 when boxes were section 370 and dashes were still used. For a better experience, please enable JavaScript in your browser before proceeding. We might be able to do something about it. Apply firm pressure to the handle, but don't squeeze too hard or the crank will be difficult to turn. If you have a lot of excess cable left over, first use a decent pair of wire snips, side cutters or a hacksaw to cut the end of the cable off to a suitable length so that there roughly 10 12 inches of cable left once pulled in to the enclosure. Yellow electrical cable trench warning tape. ins.style.display='block';ins.style.minWidth=container.attributes.ezaw.value+'px';ins.style.width='100%';ins.style.height=container.attributes.ezah.value+'px';container.appendChild(ins);(adsbygoogle=window.adsbygoogle||[]).push({});window.ezoSTPixelAdd(slotId,'stat_source_id',44);window.ezoSTPixelAdd(slotId,'adsensetype',1);var lo=new MutationObserver(window.ezaslEvent);lo.observe(document.getElementById(slotId+'-asloaded'),{attributes:true});When running any electrical cables externally any cable thats used has to be both safe for use outside and able to resist the elements and also needs to be able to resist any potential damage, especially if it is buried underground. Kitchen track lights suddenly "possessed". This image may not be used by other entities without the express written consent of wikiHow, Inc. \u00a9 2023 wikiHow, Inc. All rights reserved. I am laying some armoured cable (specification for direct burial) to replace the horrendous bodge that some previous owner installed to power the pond pump, and also to provide an extra outside socket. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. http://www.tlc-direct.co.uk/Main_Index/Earthing_Index/Piranhna_Earth_Nuts/index.html, Armour cable connection to a consumer box?/. Save me from the "matchy-matchy" lights!!! Nonmetallic boxes shall be permitted. All the other boxes in the house are plastic for use with NM cable. If the cable does not have an actual grounding wire (and the bonding trip in AC does NOT count) then you have a way to connect to ground. Is it ok to terminate an armoured cable directly into a plastic 2 -way garage consumer unit providing the brass ring is used with the gland kit for the earth return ? Nonmetallic boxes shall be permitted only with open wiring on insulators, concealed knob-and-tube wiring, cabled wiring methods with entirely nonmetallic sheaths, flexible cords, and nonmetallic raceways. The family room receptacle circuit currently is a branch off the garage and laundry room light circuit, which I was thinking of connecting to the new recessed and other lighting fixtures for the family room, then running a new home run for the receptacles. He deoesn't have MC cable. Squeeze the handles on the cable cutter to secure the armored cable in the cutter. You generally need to use MC or equivalent to go from the wall or ceiling to the connection box on the water heater. Plastic Submersible Cord Grips. An electrical conduit is a metal or plastic pipe through which electrical wires are run. I installed a metal junction box with receptacle in the firebox of our masonry fireplace. You can just pirana nuts for termination into plastic - they are quite nifty! You are using an out of date browser. Parse the code as you will, but a metal box is about $2 and it's the Kosher way to do it, IMO. Greenfield tubing is still cut with a hacksaw in many applications due to the limited size range of each crank cutter. Select the supplier or trade you require, enter your location to begin your search. Sometimes a steel connection box can be used inside the property, thus terminating the earth / SWA and converting to T&E to consumer unit. Now, pull the collar up over the wire strands and then pull up the collar nut and tighten it fully. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. heavy weights being rolled over or pushed into the cable it needs to be able to resist these forces and a standard domestic grey electrical cable would simply not be up to the job and if it became damaged would pose a huge risk and potential for injury. The earthing banjo can also be slipped over the gland before its inserted into your enclosure or consumer unit.Earthing banjo slipped over threaded sleeve, Earthing banjo slipped over threaded sleeve. MP-AP uses the armor for an EGC. The plastic sheathing of NM cable does not shield electric fields. for plastic cable accessories. Single plastic boxes do . You are using an out of date browser. In the event I run into this situation Ill use a double inlet type mc connector so there is continuous metal contact. An example of data being processed may be a unique identifier stored in a cookie. Where an armoured cable is selected as (or forms part of) a wiring system, BS 7671 requires the armouring be effectively earthed. Thanks for the prompt advice. Location under a stairwell made impossible to fish the cable through walls & ceiling. . $5640 ( 586) Model# CC1313 Master Flow 13 in. Worked great. It is manufactured from impact, corrosion and UV resistant glass reinforced polyester compound, and this provides 1,2,3 or 4 way versatility. 3. What is wanted is not the will to believe, but the will to find out, which is the exact opposite. lol. Most of the time single or 2 or possible 3 gang boxes are used. Thanks to all authors for creating a page that has been read 79,772 times. Step 4. It's fine to terminate SWA into a plastic enclosure, although you need to be the judge of whether or not said enclosure is strong enough to take the mechanical stress the cable may put on it. Before any work was carried out the entire consumer unit was isolated before the new MCB was added. We do not intend to infringe any legitimate intellectual right, artistic rights or copyright. Use wire strippers to strip 34 inch (19 mm) of casing insulation off the end of every wire going into the junction box. It is about 35-40% more for the cable than BX. Even if the metallic cable has a grounding wire ran with it, the armor still has to contact a grounded connector. I may change the cable anyway since I'm thinking of putting the family room receptacles on their own breaker and upgrading the wiring to 12 ga, 20A. I assume those will be OK. When installing SWA steel wired armoured cable it best to use 3 core - 1.Phase / Live, 2.neutral, 3.CPC Earth. All the content of this site are do not gain any financial benefit from the downloads of any images/wallpaper. If there was a fault and the jacket became energized the current would have to travel down the jacket until it reached a metallic box. var cid='3350712846';var pid='ca-pub-4631420095579283';var slotId='div-gpt-ad-diydoctor_org_uk-box-3-0';var ffid=1;var alS=1002%1000;var container=document.getElementById(slotId);container.style.width='100%';var ins=document.createElement('ins');ins.id=slotId+'-asloaded';ins.className='adsbygoogle ezasloaded';ins.dataset.adClient=pid;ins.dataset.adChannel=cid;if(ffid==2){ins.dataset.fullWidthResponsive='true';} When our new furnace was recently installed the electrician ran cable that looks exactly like in this picture, however where it mated to the metal box it used a cylindrical fitting that appears to screw-on over the outside of the cable since I don't see any other obvious attachment mechanism. All project content written and produced by Mike Edwards, founder of DIY Doctor and industry expert in building technology. Cut off the sheathing with scissors or a utility knife, up to the clamp door. When terminating or splicing at a junction, outlet or switch box, cut the cable so that 6 inches of free conductor is left for connections or splices. What are the shipping options for Conduit Fittings? Place the box in the hole and pull the cable clamp into the hole and put the lock nut on and tighten. Insert the armored cable into an armored cable rotary cutter. Light fixtures can be supported by metal junction boxes; plastic junction boxes will break under the weight. Can you imagine putting a bonding connector in a one gang old work gem box? Don't want to do this job yourself? Pull everything back down the cable to leave a good 6 8 inches of cable free.Remaining glad parts slipped on to armoured cable, Remaining glad parts slipped on to armoured cable, Using a utility knife, cut down the centre of the PVC cover at about 6 8 inches from the end and then also cut around it and pull the cover off. This image may not be used by other entities without the express written consent of wikiHow, Inc. \u00a9 2023 wikiHow, Inc. All rights reserved. 130 Points 63 Location Pennsylvania Jan 6, 2019 #2 That is AC cable so the sheath is the ground. In terms of the conductors (the charge-carrying copper wire), domestic armoured cable comes in a range of different cores including 1 core, 2 core, 3 core and 4 core and 5 core to suit different install situations. The banjo is then positioned so that the small end with the small hole is situated in a place that a hole can then be drilled through your enclosure away from any other items. Learn how to use armoured cable glands to connect to consumer units, weather proof enclosures and the similar when using armoured or SWA cable to run to and power garages, out buildings and similar structures. If the pictured fitting won't screw into the cable please recommend the proper type. A while back I asked about using a plastic box with MC and your response was that you hadn't seen a plastic box approved for metallic clad cable. Looking at the fitting in your picture I guess it is approved for use with MC (going off of what the package says). Let us help you find a tradesman local to you. I forget they clarified that part, in what-the1999, when I started out it was not so understood and a bit muddled. Retain the label or package for later inspection. Sure couldn't do it with a plastic box at both ends, the armor would not be bonded. If you are the rightful owner of any of the pictures/wallpapers posted here, and you do not want it to be displayed or if you require a suitable credit, then please contact us and we will immediately do whatever is needed either for the image to be removed or provide credit where it is due. Single triad shielded signal cables . ex. If the box at one end is grounded, it would ground the armor but I think but am not sure that the code enforces grounding of both ends for bonding purposes. Was told more then once I could not do it. If the manufacturer doesn't say it's approved for a particular wiring method, then it's not approved. You may be required to use bushings that have an indicator tab, tip or tail. Place the wires in crossed position intersecting about 5 mm from the insulation of the tap wire and the main wire. The junction box should be located as shown in figure 1 and with as much slack as possible remaining in the cable between the box and the appliance, so it can be moved if servicing is ever necessary. However, if you then leave that first plastic JB with MC and then go to another plastic JB that metal jacket is no longer grounded. Below you will notice large diameter plastic conduit bringing power to an electrical sub panel. It shows you how SWA glands work. You can create your listing free at DIYnot Local. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. "I suppose I could have used a metal box in the wall, but I had already installed a plastic one before we made the decision on the gas insert and it just seemed easier to bore a hole in the side and attach the (MC?) I didn't think you could just drill a hole in a junction box. This type of cable is available with at least two main wires (live and neutral), where the steel wires are used as an earth. Since this run of MC is only 6 ft long bonding should be a non-issue, but it really depends what the code says for legality. NEC 200.7 (C) (2) Where a cable assembly contains an insulated conductor for single-pole, 3-way or 4-way switch loops and the conductor with white or gray insulation or a marking of three continuous white stripes is used for the supply to the switch but not as a return conductor from the switch to the switched outlet. 3 Step 1 - Assemble the gland parts on the wire 4 Step 2 - Stripping the outer insulation and cutting the amour 4.1 Stripping just the outer 4.2 Cutting the armour 5 Step 3 - Stripping the bedding or inner insulation 6 Step 4 - fitting the gland cone section 7 Step 5 - sealing the back of the gland 8 Step 6 - Connecting to your box With a 3 core armoured cable you will have brown, black and grey inner cores and they are often used as follows: As you can see from the above, the black is generally used as the earth and it should be sleeved with earthing sleeve to indicate this. If for example you are using a 3-core cable but you need all 3 inner cores for other uses e.g. The storm gland has a tough polymer outer and brass inner to make a good connection with the earth . Fit the shroud. In summary if a cable is to be run externally, regardless of whether its buried or surface mounted or is going to be used in industrial locations around heavy machinery then armoured cable should always be used.Armoured cable running externally from a house to a garageif(typeof ez_ad_units!='undefined'){ez_ad_units.push([[336,280],'diydoctor_org_uk-banner-1','ezslot_6',684,'0','0'])};__ez_fad_position('div-gpt-ad-diydoctor_org_uk-banner-1-0'); Armoured cable running externally from a house to a garage. With a hacksaw at 90 degrees to the armor spiral. shed, copying the commercial 'Armadillo' approach by terminating the armoured cable in a box on the outside house wall, then running a rubber cable from the box through the wall to an ordinary plug that will go into a RCD socket indoors. Show more abrelectric 5K views 6 months ago BX Wiring: Top 5 Issues | Jesse. If the BX doesn't include a separate ground wire then you'd need a special box connector that provides a ground lug. This tool uses a small cutting wheel powered by a hand crank and will cut only through the armor, leaving the wires undamaged every time. - 1/2 in. used externally then armoured cable should definitely be used. The clamps in the box are most likely for NM cable though, so you need to use a knockout with an AC cable clamp. That cable needs to attach to a metal box. This image may not be used by other entities without the express written consent of wikiHow, Inc. \u00a9 2023 wikiHow, Inc. All rights reserved. Include your email address to get a message when this question is answered. It would be better for the fault 99 feet away to travel to the box 1ft away than to back track 99 ft. If the manufacturer doesn't say it's approved for a particular wiring method, then it's not approved.". A craptastic decision, IMHO. the large hole of the earthing banjo is slipped over the gland before the retaining nut is screwed down. You must log in or register to reply here. Measure the length you need. x 13 in. I think that the intent is to have maintain ground connection of the metallic raceway when a plastic box usually insulates between two kos. We did it that way for a ong time before the hand crank tyoe cutter was invented, and it was patented and expensive for many years. And advice on mixing finishes? It can be used both on the interior or the property and the exterior and it can either be clipped to a solid secure surface such as a wall or it can be buried in the ground and hidden away. Single pair shielded thermocouple extension cables shall be used between thermocouple head and junction boxes / transmitters / local control panel mounted instruments. Need a bonding expert to chime in on this. Local codes may require more. Your email address will not be published. 7 / 10. . wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. I suppose I could have used a metal box in the wall, but I had already installed a plastic one before we made the decision on the gas insert and it just seemed easier to bore a hole in the side and attach the (MC?) If the metal box is along side the plastic CU or whatever, then the cores of the SWA can pass through the metal box that holds the gland, straight into the plastic one, without actually having extra joins in the metal box. Home > DIY How To Projects and Tutorial Guides > How to Connect and Wire up Armoured Cable or SWA Cable. Always wear eye protection for the same reason. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. Holes are made in junction boxes, cut out boxes, etc. Say the metallic cable was 100 ft long and the short happened at the end near the plastic box, the fault current would have to back track 100 ft to the metal box and then 100ft down the grounding wire. Sea Ray 390 Motor Yacht Problems,
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