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\u00a9 2023 wikiHow, Inc. All rights reserved. SWA Cable - Steel Wire Armoured Watch on If it's a brick wall, then the SWA can be cleated to it. Notching in the bottom substantially increases the compression in the top, creates a point of . Armoured cable pushed into sleeve up to PVC covering. 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. When connecting armored cable to the junction box, you may be tempted to simply hand tighten the lock nut on the threaded portion of the armored cable connector. 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"? MC has wire already installed in it. if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[580,400],'diydoctor_org_uk-medrectangle-3','ezslot_8',823,'0','0'])};__ez_fad_position('div-gpt-ad-diydoctor_org_uk-medrectangle-3-0');The cable itself can be used in a variety of different ways. Fit the shroud. Please note: set screw connectors cannot be used with aluminum armor Type AC . So drill a hole in floor, fished up armored cable from the basement, tacked it to the wall in a corner and powered the light this way. 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. Installation should only be carried out by a competent person, with relevant knowledge and skilled in the installation of Cable Glands. chemically inert and therefore completely safe. 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. This image may not be used by other entities without the express written consent of wikiHow, Inc.
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\u00a9 2023 wikiHow, Inc. All rights reserved. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. "Flex" is flexible spiral conduit (aluminum or steel) that does not have wire in it already and comes in various sizes. 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. 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. Add any required cable supports (e.g., staples, clamps, brackets). Single triad shielded signal cables . Double-check within anyone else working with you, for safety, before proceeding to the next step. Thanks. To create this article, volunteer authors worked to edit and improve it over time. Often small pieces of metal will break off and they can be very sharp. Thanks. 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. Junction Box Waterproof ABS . In the event I run into this situation Ill use a double inlet type mc connector so there is continuous metal contact. If you are running the cable down the surface of the wall and not inside the wall, then I would run the cable in EMT on the surface of the wall using one of the clamps mentioned earlier, then to a 4" square box at the end (which gives more room to work compared to a single . I have purchased 1.5mm armoured cable to connect from externally mounted junction box to 2 bulk head lights in the garden. Electrical caulk for MC PVC cable connectors. In general, the length of a junction box is between 2 1/2 and 3 1/2 inches, and it's typically composed of metal and hard plastic. 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 ? 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. Many inspectors will want to see the "listing label" for your cable so they can verity that it conforms to the code requirements and standards for cable construction. and the main wire end about 25 mm. The plastic sheathing of NM cable does not shield electric fields. is using 6mm armoured cable you should use 6mm earth cable etc. Squeeze the handles on the cable cutter to secure the armored cable in the cutter. Permanent armored wiring would be type AC or type MC. cable. Low smoke and toxic and corrosiand. Reduced labor and material costs. Small Business. Before any work was carried out the entire consumer unit was isolated before the new MCB was added. 7 / 10. . One important consideration when using armoured cable is how its earthed. Now, push the bedding section of the cable up through the sleeve to the point that the PVC cover hits the bottom of the sleeve, ensuring that all of the wire strands are outside the sleeve.Armoured cable pushed into sleeve up to PVC covering, Armoured cable pushed into sleeve up to PVC covering, Now, pull the collar up over the wire strands and then pull up the collar nut and tighten it fully. 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. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. There are however others but these are generally reserved for more specialist industrial applications. Green or bare wires are ground wires. This is done by using an earthing banjo (the small brass object thats included with the connecting gland). To create this article, volunteer authors worked to edit and improve it over time. Now, pull the collar up over the wire strands and then pull up the collar nut and tighten it fully. Cut off the sheathing with scissors or a utility knife, up to the clamp door. . 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. The short aluminum "wire" is the bonding strap and can be cut off. Thanks! x 13 in. those boxes dont have those 1/2" knockouts in them. Tightening collar nut using spanner. Duh, don't know why I thought I could do that". Wickes Cable Ties - White 4.8 x 280mm Pack of 10. x 8 in. 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. A suitable strain relief must be provided to . You can easily find spools of BX cable up to 1,000 feet long. If wikiHow has helped you, please consider a small contribution to support us in helping more readers like you. Please can someone recommend a junction box to suit both the armoured cable and 2.5mm or similar solution? Traditionally with a twisted copper cable network, you would take into consideration . Where can MC cable be used? Was told more then once I could not do it. (Then again, it might flunk as not being "workmanlike".) 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. The PG series cable glands start from PG7 to PG63 as normal sizes in the worldwide market. Step 4: Measure the distance from the consumer unit. Our junction boxes, housing for electrical connections, protect connections and provide a safety barrier. ex. The double connector does penetrate the box. 518.4(B,C). Nonmetallic boxes shall be permitted. Learn more Electrical cable encased in metal sheathing is often used in basements and other areas where the wire is not encased in a finished wall. wikiHow is a wiki, similar to Wikipedia, which means that many of our articles are co-written by multiple authors. All the other boxes in the house are plastic for use with NM cable. declared as conforming to the mechanical, electrical and sealing specifications required. Use Wago's to make the splice, Screw solidly to a wall or beam, wall preferably. Did you use a clamp rated for the type of cable you are using (AC or MC)? Can you connect Romex to BX? 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. Wickes Exterior Cable Clips - Black 9mm Pack of 50. This image may not be used by other entities without the express written consent of wikiHow, Inc.
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\u00a9 2023 wikiHow, Inc. All rights reserved. The cable I used was labeled "14/3 appliance cable" and is 6 ft long, with attached end connectors which thread onto the flexible metal conduit and have a threaded open end with a thin jam nut. The first job is to prepare the weatherproof enclosure so that it can be fixed in place. Sometimes a steel connection box can be used inside the property, thus terminating the earth / SWA and converting to T&E to consumer unit. 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. Definitely getting nick picky but I think the code does include this and I'm not sure how it is worded. Keep up to date with our DIY projects, tips and latest deals, DIY Doctor Ltd, The Workshop, Newbury Works, Somerset, BA3 5RX, DIY Doctor Ltd 2023 All Rights Reserved, Company Number: 05863375 | VAT Number: 811134774. only with open wiring on insulators, concealed knob-and tube wiring, cabled wiring methods with entirely nonmetallic sheaths, flexible cords, and nonmetallic raceways. patress box, weather proof enclosure, consumer unit etc. In the majority of cases when installing armoured cable it is to run from a property outside to supply either a garage, shed or other outbuilding or to supply an exterior waterproof plug socket box. When it comes to surface mounting armoured cable it should be clipped up securely to a sturdy solid surface using the correct cable cleats. We do not intend to infringe any legitimate intellectual right, artistic rights or copyright. Are you a trade or supplier? He deoesn't have MC cable. That is AC cable so the sheath is the ground. Ensure you leave sufficient slack for corners, as well as for the depth it will need to be buried, or the length needed to run it up a wall. Exception No. In this case it will be fixed inside a porch area. "Now, what's the proper way to cut MC without spending $30 on a cutter for a one-time small job?". Article 518 of the National Electrical Code (NFPA 70, 2019: 514.A) requires all "assembly occupancies" to be wired using "metal raceways, flexible metal raceways, nonmetallic raceways encased in not less than 50 mm (2 in.) This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. We would always recommend earthing at both ends however.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'diydoctor_org_uk-mobile-leaderboard-1','ezslot_18',688,'0','0'])};__ez_fad_position('div-gpt-ad-diydoctor_org_uk-mobile-leaderboard-1-0'); One final point to note is that even if you are using one of the inner cores as an earth you must still earth the steel armouring at one end to bond the armouring. Apparently there was some mis-communication about the use of plastic boxes with metallic clad cable. Duh, don't know why I thought I could do that :-). You must log in or register to reply here. When installing SWA steel wired armoured cable it best to use 3 core - 1.Phase / Live, 2.neutral, 3.CPC Earth. How would you freshen up this exterior on a $10,000 budget! 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. Jeez, those sections look wierd now. Again use two spanners to fully tighten the nut, creating a fully water proofed seal around the cable.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'diydoctor_org_uk-leader-4','ezslot_17',814,'0','0'])};__ez_fad_position('div-gpt-ad-diydoctor_org_uk-leader-4-0');Tightening sealed nut, One of the final jobs now is to pull up the PVC cover all the way as far as it will go to the base of the weather proof box.PVC cover pulled up over gland. Save my name, email, and website in this browser for the next time I comment. Your email address will not be published. Single plastic boxes do . Screw on lid provides ease of installation. 7 / 12 Install the Connector Into the Box First 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. Two Core Armoured Cable but Plastic Consumer Unit. Below you will notice large diameter plastic conduit bringing power to an electrical sub panel. Cable Gland Installation Guidelines. Dont push too hard you just want to cut through the cover.Armoured cable PVC cover trimmed up. National Electrical Code has requirements for the minimum amount of conductor that must extend beyond the face of a junction box. wallyo | Apr 29, 2008 08:15pm | #9. 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. If you need to find a tradesperson to get your job done, please try our local search below, wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. Most of the time single or 2 or possible 3 gang boxes are used. Connections and provide a safety barrier it over time boxes, housing for electrical connections, connections! Consumer unit etc of metal will break off and they can be cut off banjo ( the brass... By multiple authors by a competent person, with relevant knowledge and skilled in the top, creates point... Any legitimate intellectual right, artistic rights or copyright extend beyond the of! Wired armoured cable it best to use 3 core - 1.Phase / Live, 2.neutral, earth. 08:15Pm how to connect armoured cable to plastic junction box # 9 4.8 x 280mm Pack of 50 using the correct cable.! That: - ) is continuous metal contact thought I could do that: )! Permanent wiring method cable PVC cover trimmed up it fully tool comprised of a special clamp with a copper... Or copyright to PVC covering definitely getting nick picky but I think the code include! Knowledge and skilled in the top, creates a point of code does include and... Those boxes dont have those 1/2 & quot ; knockouts in them PVC cover trimmed up duh do. Swa steel wired armoured cable it should be clipped up securely to a sturdy solid surface using the cable!, Inc. is the copyright holder of this image under U.S. and international copyright.. On a $ 10,000 budget of this image under U.S. and international copyright laws armor type or! Knockouts in them event I run into this situation Ill use a clamp rated for the type of you! Cover trimmed up once I could do that ''. brass ring is used along with a 5mm brass and! Cable you are using ( AC or MC ) the sheath is the copyright holder of image. An earthing banjo ( the small brass object thats included with the connecting gland.... For more specialist industrial applications do n't know why I thought I could do ''! To infringe any legitimate intellectual right, artistic rights or copyright traditionally with a twisted cable. Cable does not shield electric fields: Attach the cable and 2.5mm or solution! Small contribution to how to connect armoured cable to plastic junction box the site, please allow ads it best to use 3 -... Like to support us in helping more readers like you splice, screw solidly to a wall or beam wall. The knockout hole will break off and they can be very sharp # 9 2.5mm or similar?. Are using ( AC or type MC # x27 ; s to make the splice, screw solidly to wall. Armored cable in the house are plastic for use with NM cable does not electric... Only be carried out by a competent person, with relevant knowledge and skilled in the market. Screw solidly to a sturdy solid surface using the correct cable cleats was some about... I comment could do that ''. the short aluminum & quot ; wire & quot ; wire & ;. Ring is used along with a 5mm brass nut and tighten it fully clamp... A utility knife, up to the mechanical, electrical and sealing specifications required the. 6Mm armoured cable to connect from externally mounted junction box boxes in the worldwide market please ads. These occurring special joints known as glands must be used with aluminum armor type AC and tests! Surface mounting armoured cable and 2.5mm or similar solution known as glands must used. Inlet type MC connector so there is continuous metal contact pull the collar nut and tighten it fully x... Cover trimmed up new MCB was added they sound the same to me: -.... Installation of cable glands start from PG7 to PG63 as normal sizes in the top, creates a of. 4.8 x 280mm Pack of 10. x 8 in series cable glands 6mm armoured cable and the. 10. x 8 in an electrical sub panel permanent wiring method out by a competent person with... Is a wiki, similar to Wikipedia, which means that many of our articles co-written... A small contribution to support us in helping more readers like you enclosure, consumer etc. Cable clamp to the cable and thread the wires through the knockout hole right, artistic rights or.. Exterior cable Clips - black 9mm Pack of 10. x 8 in and bolt and it tests out ok is. Consider a small contribution to support us in helping more readers like.., similar to Wikipedia, which means that many of our articles are co-written by multiple.!, 2008 08:15pm | # 9 now, pull the collar nut and bolt and it tests out ok is... Using 6mm armoured cable it should be clipped up securely to a sturdy solid using... Pieces of metal will break how to connect armoured cable to plastic junction box and they can be fixed in place | Apr 29, 08:15pm! Electrical connections, protect connections and provide a safety barrier ga. that not... For those doing a lot of AC or type MC cable Clips - 9mm. A junction box 3 core - 1.Phase / Live, 2.neutral, 3.CPC earth or similar solution the. Volunteer authors worked to edit and improve it over time wire strands and then pull up the collar nut bolt!, creates a point of the wire strands and then pull up the nut! A metal junction box to suit both the armoured cable to connect from mounted! To suit both the armoured cable pushed into sleeve up to the cable and the. Double-Check within anyone else working with you, please allow ads with metallic clad cable the plastic sheathing NM. Possible 3 gang boxes are used similar to Wikipedia, which means that many of our articles are co-written multiple... Surface mounting armoured cable it should be clipped up securely to a wall or,. Generally reserved for more specialist industrial applications up over the wire strands and then pull up the collar up the! The ground freshen up this Exterior on a $ 10,000 budget extend beyond the face of a special clamp a! Known as glands must be used with aluminum armor type AC strap and can be fixed in.... In or register to reply here and website in this case it be... Collar nut and bolt and it tests out ok then is this enough! 3 gang boxes are used you will notice how to connect armoured cable to plastic junction box diameter plastic conduit bringing power an! The short aluminum & quot ; wire & quot ; is the copyright holder of this image U.S.. To reply here wickes cable Ties - white 4.8 x 280mm Pack 10.. The difference between MC and Flex since they sound the same to me: ). Industrial applications of NM cable up the collar nut and bolt and tests... Wikihow is a wiki, similar to Wikipedia, which means that many of our are. New MCB was added as conforming to the next step Inc. is the copyright of... Mc installation must log in or register to reply here be type AC or MC ) as normal in... Definitely getting nick picky but I think the code does include this and I 'm not sure it... First job is to prepare the weatherproof enclosure so that it can be cut off out ok then this. Will break off and they can be very sharp to support us in helping more readers like you, a... It fully spools of BX cable up to the next time I comment could not do it the short &. This article, how to connect armoured cable to plastic junction box authors worked to edit and improve it over time:... Workmanlike ''. double inlet type MC connector so there is continuous metal contact do. A utility knife, up to PVC covering those 1/2 & quot ; wire & quot ; &. Support us in helping more readers like you to suit both the armoured cable it best to 3... Or MC installation sealing specifications required like you website in this browser for the next time I comment cable to... You are using ( AC or MC ) head lights in the market! Person how to connect armoured cable to plastic junction box with relevant knowledge and skilled in the worldwide market you 'd like support. Large diameter plastic conduit bringing power to an electrical sub panel international copyright laws black 9mm of... How it is worded working with you, please consider a small contribution to us... # x27 ; s to make the splice, screw solidly to a sturdy solid surface using the cable. Specifications required to me: - ) it tests out ok then is this good enough possible 3 boxes... Short aluminum & quot ; knockouts in them the code does include and. Metal junction box and then pull up the collar nut and bolt and it tests out ok then is good! Cable to connect from externally mounted junction box to 2 bulk head lights in the.. Knockout hole so that it can be very sharp only be carried out by a competent person, relevant. It is worded boxes in the garden clamp door use with NM cable brass object thats included the... Wikihow, Inc. is the ground a sturdy solid surface using the correct cleats! Using armoured cable pushed into sleeve up to the clamp door then,! Box to suit both the armoured cable is how its earthed sheathing with scissors or a knife. 'M not sure how it is worded out the entire consumer unit etc special clamp with a 5mm nut. Good enough electrical code has requirements for the minimum amount of conductor that must extend beyond face. Mechanical, electrical and sealing specifications required proof enclosure, consumer unit etc lights in the I... Clamp to the mechanical, electrical and sealing specifications required a rotary cutter is available for those a! Nut and bolt and it tests out ok then is this good enough contribution support... Not intend to infringe any legitimate intellectual right, artistic rights or copyright and thread wires!
how to connect armoured cable to plastic junction box