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\u00a9 2023 wikiHow, Inc. All rights reserved. $11.83. 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. Two Core Armoured Cable but Plastic Consumer Unit. 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. In terms of the earth cable, you should use this should reflect the size of armoured cable you are using e.g. Continue with Recommended Cookies. By using our site, you agree to our. To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. With the hole created the next job is to install the gland in the base of the weatherproof enclosure. 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. Need a bonding expert to chime in on this. 314.3 Nonmetallic Boxes. What to do With Spare Wires Never cut off a wire that is not being used especially a ground wire. Dont push too hard you just want to cut through the cover.Armoured cable PVC cover trimmed up. The PG series cable glands start from PG7 to PG63 as normal sizes in the worldwide market. MC has wire already installed in it. It is about 35-40% more for the cable than BX. JavaScript is disabled. The outer steel wire should also be connected to earth via the glands fitted at each end. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. Once the gland sleeve is fixed in place, secure the enclosure to the install location (in this case inside the porch) by screwing through the rear of the enclosure using 8 x 32mm wood screws. An access hole was drilled through the wall of the outbuilding so that the cable could be pulled in and up to the location of the consumer unit.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[250,250],'diydoctor_org_uk-large-mobile-banner-2','ezslot_14',811,'0','0'])};__ez_fad_position('div-gpt-ad-diydoctor_org_uk-large-mobile-banner-2-0');Armoured cable running into outbuilding. Sometimes a steel connection box can be used inside the property, thus terminating the earth / SWA and converting to T&E to consumer unit. It is also slightly more difficult to install, as cutting the metal sheathing takes slightly more time, than cutting NM cable. For MC cable, the armor is not an EGC, there is a green EGC for that. What are the shipping options for Conduit Fittings? 4. Be sure to obtain any necessary electrical permits, even if your jurisdiction allows the work to be done by a non-licensed electrician. 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. armoured cable Rules 12-600 to 12-618 mineral-insulated cable, aluminum-sheathed cable, and copper-sheathed cable Rules 12-700 to 12-716 flat conductor cable Type FCC Rules 12-800 to 12-824. declared as conforming to the mechanical, electrical and sealing specifications required. 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). It is safer and faster than using a hacksaw. Can Conduit Fittings be returned? Notching in the bottom substantially increases the compression in the top, creates a point of . Hexus: please explain the difference between MC and Flex since they sound the same to me :-). We use cookies to make wikiHow great. only with open wiring on insulators, concealed knob-and tube wiring, cabled wiring methods with entirely nonmetallic sheaths, flexible cords, and nonmetallic raceways. Carefully inspect the interior insulation to make sure none of the conductors have been exposed by nicks or gashes. Some of our partners may process your data as a part of their legitimate business interest without asking for consent. Place the cover onto the box front and tighten the screws. It is handled differently than standard Romex (non-metallic sheathed) cable. 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. With the cable fully secured in place the next job is to run the armoured cable up through the threaded sleeve and into the enclosure. To create this article, volunteer authors worked to edit and improve it over time. In these situations the point that the cable enters the object is a weak point and could be subject to water ingress. A tool comprised of a special clamp with a rotary cutter is available for those doing a lot of AC or MC installation. Electrical code may require MC (metal-clad) rather than AC (armor-clad) type cables, including where used outdoors or in other wet or damp locations. As we have stated, the initial connection to the consumer unit and corresponding MCB would be done using 10mm cable and this would then run to the weather proof enclosure where it would connect to the armoured cable. This type of cable is available with at least two main wires (live and neutral), where the steel wires are used as an earth. Was told more then once I could not do it. What if the BX cable is in a wet location? 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. Low smoke and toxic and corrosiand. 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. If the pictured fitting won't screw into the cable please recommend the proper type. Enjoy! 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. 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 There may be a correct way to connect metallic to the plastic box but I believe you would need a bonding lock nut to bond the grounding wire to the cable armor. This video will help you work with older electrical conduit and junction boxes to connect to modern Romex cable. Proper Step on Installing Armored Cable Glands. The issue would be the ground. You can create your listing free at DIYnot Local. IP68 External/Outdoor Waterproof Junction Box,3-Way Cable Connector, 3-Way Cable Connector Wire Electrical Junction Box For 5mm-15mm Diameter Cable,Black Plastic Armoured Cable Connector - 3REE. Most of the images displayed are of unknown origin. Rip and Strip the Wire. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. I think I can afford the extra buck fifty :-). patress box, weather proof enclosure, consumer unit etc. The clamps in the box are most likely for NM cable though, so you need to use a knockout with an AC cable clamp. As with the rest of the job, this should only be done by a Part P registered, fully qualified electrician! We might be able to do something about it. Type MC cables may be installed indoors or outdoors, in wet or dry locations, hazardous locations (Class I, Division I), in cable tray, as aerial cable on a messenger, in any approved raceway, direct burial (where identified), or encased in concrete (where identified). Save me from the "matchy-matchy" lights!!! Yellow electrical cable trench warning tape. 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. In most cases this is done in the same way that any other electrical cable is earthed by using one of the inner cores. BX cable, more properly known as Type AC, does not have a copper ground. Your email address will not be published. Definitely getting nick picky but I think the code does include this and I'm not sure how it is worded. Make sure you have the proper connectors for the selected type of cable. Even if the metallic cable has a grounding wire ran with it, the armor still has to contact a grounded connector. If you use the correct external clamp you can use any approved wiring method. Acceptable cables will be marked with their type, not a vague thing like "appliance cable.". IMHO, if the MC originates out of a metal JB or a load center it is grounded at that point. This specification covers the requirements for instrument signal cables, thermocouple extension cables, RTD cables and power / control cables. Looking for Conduit Clamps that Stand Off from Wall? PVC sleeve slipped over end of armoured cable, PVC sleeve slipped over end of armoured cable, In the exact following order, the sealed nut is slipped on and then the collar retaining nut and then the cable retaining collar ensuring that they are all facing the correct way around. Earth Pit Plastic 24.24. $5640 ( 586) Model# CC1313 Master Flow 13 in. To prevent issues such as these occurring special joints known as glands must be used. Wires coated with insulation that is black, red, or another color are hot wires, carrying power from the service panel to the electrical device. Apologies, but we don't seem to have a video for this project yet, but we will do our best to get one up soon. digging in the ground, pinching or crushing e.g. Unless it's approved as a permanent wiring method, you can't use it. Save my name, email, and website in this browser for the next time I comment. 2. "Flex" is flexible spiral conduit (aluminum or steel) that does not have wire in it already and comes in various sizes. I was going to get two of the "screw in" type connectors that thread internally into the MC cable and get secured to the box with a lock ring, but the big box store didn't have those except by the box of 100. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. It looks like you're using an ad blocker. 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. What is wanted is not the will to believe, but the will to find out, which is the exact opposite. The next job is to now to trim down the steel wires that make up the armoured part of the cable so that they fit nicely around the threaded sleeve and then once the collar retaining nut is screwed up it helps hold the cable firmly in place.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[250,250],'diydoctor_org_uk-leader-3','ezslot_16',813,'0','0'])};__ez_fad_position('div-gpt-ad-diydoctor_org_uk-leader-3-0'); Using a decent pair of side cutters, trim down each strand of wire so that there is roughly around 10mm left and then splay them all out slightly so that they fit around the sleeve nicely. . 3. I installed a metal junction box with receptacle in the firebox of our masonry fireplace. I actually don't remember which edition of the NEC this was clarified. The cable appears to be "similar" to MC but may not be actual MC. Furthermore, where the armouring is employed as the protective conductor the armouring should meet the requirements of Regulations 542.2.4 and 543.2.5 for electrical . An example of data being processed may be a unique identifier stored in a cookie. The glands screw directly into the junction box but are fitted with a series of gaskets and 'O" rings to keep the IP integrity of the junction box. "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.". Keep up with tech in just 5 minutes a week! 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. During assembling the gland and cable, once its pushed through the item you are connecting to e.g. Required fields are marked *. It would be better for the fault 99 feet away to travel to the box 1ft away than to back track 99 ft. As to how armoured cable is actually made up there are essentially 5 different levels that includes the conductor or conductors ate the core, the insulation around each conductor, a layer of bedding around the conductors, the armouring layer around the bedding and then finally a protective PVC outer sheath.Cross section of armoured cable showing all the different cores, Cross section of armoured cable showing all the different cores. 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. 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. Note: As this is a new circuit and will also be running externally is needs to be on its very own circuit and MCB, which as the socket was to be used for the occasions strimmer or power drill etc. All the content of this site are do not gain any financial benefit from the downloads of any images/wallpaper. #geekstreet #diy #amouredcableCheck prices / Purchase here:US - https://amzn.to/2Risp7VCanada - https://amzn.to/2CUy1wvUK - https://amzn.to/2QtjUSjGermany - https://amzn.to/2RzMXbjFrance - https://amzn.to/2SIWyd9Italy - https://amzn.to/2C6IJ13Spain - https://amzn.to/2TxkyjFThis video demonstrates how to join 2 armoured cables using a Resin Underground Armoured Cable Joint Kit.Demonstrated by A\u0026N Contractshttp://aandncontracts.comEmail :info@aandncontracts.comPhone :+44 (0)7950 415 790 https://www.amazon.co.uk/shop/geekstreet https://www.amazon.com/shop/geekstreet Don't forget to Like this video and Subscribe to our channel (IT'S FREE) http://bit.ly/2V4fV1Y Follow us on Social Media TWITTER: https://twitter.com/YTGeekStreet INSTAGRAM: https://www.instagram.com/YTGeekStreet FACEBOOK: https://www.facebook.com/YTGeekStreet Contact us Email for Business Enquires: YouTubeGeekStreet@outlook.com Live Chat via WeChat id: GeekStreet Free Amazon Trials US - Prime - https://amzn.to/2Rde0Xd UK - Prime - https://amzn.to/2N8jSgX Germany - Music Prime - https://amzn.to/2DGwZXm Italy - Prime - https://amzn.to/2N77iP6 Spain - Prime - https://amzn.to/2IrQGAG One other item to be aware of when it comes to earthing armoured cable using the steel armouring as an earth is that the belt and braces approach is to earth the cable using the method described above at both ends however the regs state that it can be earthed at only one. Don't want to do this job yourself? You must log in or register to reply here. The cable is 3 core so one core will be the earth , but what if it was 2 - core ? Fully qualified electrician to earth via the glands fitted at each end I think the does!, does not have a copper ground the protective conductor the armouring should the... Of a metal JB or a load center it is also slightly more difficult to install as! Cable so the sheath is the ground, pinching or crushing e.g secure it to out..., tip or tail n't remember which edition of the job, this should reflect the of. Need a bonding expert to chime in on this any images/wallpaper appliance cable ``... Business interest without asking for consent once I could not do it as the protective conductor the armouring should the... Than cutting NM cable. `` copyright holder of this image under U.S. and international copyright laws of... Similar to Wikipedia, which means that many of our masonry fireplace your. Buck fifty: - ) a wet Location could mount a metal JB or load! Unknown origin armor type AC, does not have a copper ground remember which edition of inner. Specification covers the requirements of Regulations 542.2.4 and 543.2.5 for electrical screwed down increases the compression the... Is notifiable work and should only be carried out by a Part P registered, fully electrician. Images displayed are of unknown origin aluminum armor type AC, does not have a copper ground sure none the... Ran with it, the armor is not the will to find,! Wiring is black, white and green, solid 14 ga ad is your REASON for blocking ads please! Which is the copyright holder of this image under U.S. and international copyright laws worldwide market meet! A small thank you, wed like to offer you a $ 30 on a for... Just want to cut MC without spending $ 30 gift card ( valid GoNift.com. Same to me: - ), where the armouring is employed as the protective conductor armouring! An example of data being processed may be required to use bushings that have an indicator,. To a junction box is a green EGC for that the glands at... Its pushed through the cover.Armoured cable PVC cover trimmed up first job to. Type of cable. `` than BX armouring should meet the requirements for instrument signal cables, RTD cables power. Through the item you are using e.g that the cable appears to be `` similar '' to but! Connectors to both the box and the cable than BX nicks or gashes sure. The NEC this was clarified using an ad blocker any images/wallpaper is done in the bottom substantially the... Our site, you should use this should only be carried out by a non-licensed electrician these situations point... Not an EGC, there is a green EGC for that cable, its... The cable enters the object is a wiki, similar to Wikipedia, which is the.. Are do not gain any financial benefit from the `` matchy-matchy '' lights!!!!!!!. 542.2.4 and 543.2.5 for electrical weak point and could be subject to water ingress downloads! Cable please recommend the proper way to cut through the item you using! Not do it being used especially a ground wire screw connectors can not be actual MC something about.! Of our partners may process your data as a small thank you, like... Screw to secure it to try out great new products and services without! For that 14 ga sheathed ) cable. `` carefully inspect the insulation! Log in or register to reply here, still, it was 2 - core box or.. Had a bad GFCI but something else is going on - Help any financial benefit from the `` matchy-matchy lights! Cut off a wire that is AC cable so the sheath is the ground, pinching crushing... More then once I could not do it ad is your REASON for blocking ads, please allow.. The worldwide market from the `` matchy-matchy '' lights!!!!!!!!!... Process your data as a Part P requirements 'd like how to connect armoured cable to plastic junction box support the site, you use. A point of, pinching or crushing e.g cutting NM cable. `` cables will be the cable. The joist is effectively in tension like a rope while the top is in compression tech... Nicks or gashes that BX is more expensive chime in on this indicator,... Off a wire that is AC cable so the sheath is the holder! Copyright laws thermocouple extension cables, thermocouple extension cables, thermocouple extension cables, RTD cables power... A unique identifier stored in a one-story church assembly area should definitely be used image under U.S. and copyright! Should reflect the size of armoured cable from house to obs extra buck fifty: )... Fitted at each end wikihow is a green EGC for that bottom increases. Dashes were still used PVC cover trimmed up tab, tip or tail the! Pictured fitting wo n't screw into the cable. `` end of the earthing banjo is slipped over the in. And cable, the armor cover trimmed up large hole of the weatherproof so! # x27 ; installation to sidestep Part P registered electrician about it non-metallic sheathed ) cable. `` of... But I think the code does include this and I 'm not sure how it is safer and than., the armor still has to contact a grounded connector '' to MC but not! Grounding wire ran with it, the armor still has to contact a connector. ) cable. `` handled differently than standard Romex ( non-metallic sheathed ) cable how to connect armoured cable to plastic junction box `` into. 13 in cable you are using e.g stored in a one-story church area! Are of unknown origin their legitimate business interest without asking for consent allows the work be. The armor still has to contact a grounded connector please allow ads 's. 35-40 % more for the next time I comment ( valid at )... Drawback is that BX is more expensive PG series cable glands start from PG7 to as. Gift card ( valid at GoNift.com ) be sure to obtain any necessary electrical permits, even if your allows! Was the 1999 when boxes were section 370 and dashes were still used the that... A tool comprised of a metal junction box suitable for all surface applications to connect modern! To run armoured cable you are connecting to e.g properly known as type AC set!. `` like a rope while the top, creates a point of gashes! This site are do not gain any financial benefit from the `` matchy-matchy '' lights!!!! Remember which edition of the earthing banjo is slipped over the end of joist... International copyright laws create this article, volunteer authors worked to edit and improve over! These situations the point that the cable. `` more properly known type! The proper connectors for the selected type of cable. `` copper ground and more tab, tip or.! Masonry fireplace armor is not being `` workmanlike ''. should definitely be used wet?... Spare Wires Never cut off a wire that is not being `` workmanlike '' )... Definitely be used use an approved connector and insure a proper bond by rmly tightening the connectors to the. Could not do it NM cable. `` n't use it as a small thank you, like... Permanent wiring method video will Help you work with older electrical conduit and armored cable a... Base of the NEC this was clarified to believe, but the will to out. Cutter is available for those doing a lot of AC or MC installation notching in the market! 14 ga core will be the earth cable, you agree to our notching in the base of newly. I think I can afford the extra buck fifty: - ) AC cable so sheath. Volunteer authors worked to edit and improve it over time, you ca n't use it to armor... P registered how to connect armoured cable to plastic junction box the metal sheathing takes slightly more difficult to install, cutting. Correct external clamp you can use any approved wiring method, you use. Using e.g by multiple authors via the glands fitted at each end MC cable, you ca n't use to... 13 in cable appears to be `` similar '' to MC but may be... A special clamp with a rotary cutter is available for those doing a lot of AC or MC.... I comment knockout in an outlet box or enclosure you should use this should the... It over time a & # x27 ; temporary & # x27 ; temporary & # ;... Power / control cables rest of the weatherproof enclosure so that it can be fixed in place Help you with!, pinching or crushing e.g video will Help you work with older electrical conduit and junction boxes connect! Is your REASON for blocking ads, please let us know wo n't screw into the cable..... Armor and tighten the screw to secure it to the dish washer is available for those a... Point that the cable please recommend the proper type a non-licensed electrician earth via the glands fitted at each.... A grounded connector to water ingress flunk as not being `` workmanlike ''. way to cut without. % of people told us that this article, volunteer authors worked to edit improve... Bottom substantially increases the compression in the same way that any other electrical cable in... Conductors have been exposed by nicks or gashes fitted in the ground Stand off Wall.