I picked up two of the "screw-in" fittings to connect the MC to the boxes. . Did you use a clamp rated for the type of cable you are using (AC or MC)? When it comes to exactly what situations armoured cable should be used in, generally if the cable itself is going to be exposed to the weather and needs to be fully sealed and water proof e.g. The easy way around all the 2nd guessing is to just change out the plastic j-box for a metal one. 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. Use it to try out great new products and services nationwide without paying full pricewine, food delivery, clothing and more. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. If the homeowner isnt too bothered about visual appearance then in pretty much all cases its much cheaper and easier to surface mount the cable along any nearby walls or fences.Armoured cable surface mountedif(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'diydoctor_org_uk-large-leaderboard-2','ezslot_9',685,'0','0'])};__ez_fad_position('div-gpt-ad-diydoctor_org_uk-large-leaderboard-2-0'); If however the homeowner or customer is particular about how visible the cable maybe then burying it is the way to go for sure, however this can in some cases be costly and involve a fair amount of work. --Bertrand Russell. For this the electrician chose to use 10mm SWA cable. The very last job for our electrician now is to connect the other end of the armoured cable into the consumer unit on its own MCB. 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. An SWA Cable Junction Box is a general purpose junction box suitable for all surface applications. Just use a normal IP65 plastic adapt box and drill your 20mm holes to suit and fasten gland or copex with nut !!!!!!! 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. For a better experience, please enable JavaScript in your browser before proceeding. Is BX cable required in NY in a one-story church assembly area? Installation should only be carried out by a competent person, with relevant knowledge and skilled in the installation of Cable Glands. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. In terms of burying armoured cable, it should be buried at 450mm down from the surface with ideally a layer of sand in the base of the trench. 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. Continue with Recommended Cookies. 2. 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 . If you go to the trouble of making the correct size hole in the box and using an approved clamp you can use other methods, but you still have to watch for the grounding conductor. Now, what's the proper way to cut MC without spending $30 on a cutter for a one-time small job? 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. With a hacksaw at 90 degrees to the armor spiral. The short aluminum "wire" is the bonding strap and can be cut off. This video will help you work with older electrical conduit and junction boxes to connect to modern Romex cable. A metal box can be grounded by AC or metallic conduit, but a plastic box needs a run ground conductor. . For a better experience, please enable JavaScript in your browser before proceeding. 1: Where internal bonding means are provided between all entries, nonmetallic boxes shall be permitted to be used with metal raceways or metal-armored cables. Modern conduit is made of rigid metal that can be bent into elbows, plastic that includes pre-bent elbows, and flexible metal and plastic ENT materials. An electrical conduit is a metal or plastic pipe through which electrical wires are run. Was told more then once I could not do it. Thanks to all authors for creating a page that has been read 79,772 times. . Step 1: Determine the type of steel in the cable. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. Select the supplier or trade you require, enter your location to begin your search. The PG series cable glands start from PG7 to PG63 as normal sizes in the worldwide market. I assume those will be OK. These piranha nuts - do they fit onto the armoured cable before the gland ? 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. Single triad shielded signal cables . When it comes to surface mounting armoured cable it should be clipped up securely to a sturdy solid surface using the correct cable cleats. Free shipping. Repeat the previous steps at the opposite end of your cable Put a BX connector on the end of the cut armor and then tighten the screw for you to secure the armor. A craptastic decision, IMHO. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. Apply firm pressure to the handle, but don't squeeze too hard or the crank will be difficult to turn. The cable is 3 core so one core will be the earth , but what if it was 2 - core ? 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. Fasten the box to the bar. Use Wago's to make the splice, Screw solidly to a wall or beam, wall preferably. Mike makes an excellent point about putting a hole in a box designed for NM cable. If you plan on installing outside sockets or running power supplies to sheds or outbuildings then using SWA cable is certainly the way to go. 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.) 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. Junction Box Waterproof ABS . The cable was then run along an existing fence that bordered the property that ran from the rear entrance and porch area all the way down to the out building. The armoured cable is the garage feed. What are the shipping options for Conduit Fittings? 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. If the manufacturer doesn't say it's approved for a particular wiring method, then it's not approved. 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. That does not sound like an approved permanent wiring method. In this case it will be fixed inside a porch area. Houzz utiliza cookies y tecnologas similares para personalizar mi experiencia, ofrecerme contenido relevante y mejorar los productos y servicios de Houzz. Greenfield tubing is still cut with a hacksaw in many applications due to the limited size range of each crank cutter. Acceptable cables will be marked with their type, not a vague thing like "appliance cable.". And advice on mixing finishes? Where does it come out of the wall? In the event I run into this situation Ill use a double inlet type mc connector so there is continuous metal contact. Step 2: Check the gland pack. 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. What if the BX cable is in a wet location? In these situations the point that the cable enters the object is a weak point and could be subject to water ingress. 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. wikiHow is where trusted research and expert knowledge come together. Can you imagine putting a bonding connector in a one gang old work gem box? Attach conduit and armored cable to a knockout in an outlet box or enclosure. 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. Securely connect cable in sanitary environments such as food plants with these watertight cord grips. Before any work was carried out the entire consumer unit was isolated before the new MCB was added. The cable appears to be "similar" to MC but may not be actual MC. Never overload a wirefor instance, never wire a 20-amp circuit with 14-gauge wire. Measure the length you need. Installation of cable glands must be carried whilst following the appropriate codes of practice, local regulations and in accordance with manufacturer guidelines. If the manufacturer doesn't say it's approved for a particular wiring method, then it's not approved.". (18) 1.25. This type of cable is available with at least two main wires (live and neutral), where the steel wires are used as an earth. lol. 3) Individual conductors run inside conduit: Individual . http://www.tlc-direct.co.uk/Main_Index/Earthing_Index/Piranhna_Earth_Nuts/index.html, Armour cable connection to a consumer box?/. 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. Now I need to find the correct cable clamp to secure the MC to the box. You are using an out of date browser. National Electrical Code has requirements for the minimum amount of conductor that must extend beyond the face of a junction box. Step 5: Cut the cable. Manage Settings Are you a trade or supplier? The main difference between the AC wire and the MC wire is that the metal-clad cable has a standard ground wire, whereas the AC cable relies on a jacket in combination with a wire or thin strip to secure the grounding. Free shipping for many products! Cut off the sheathing with scissors or a utility knife, up to the clamp door. Repeat for the connections at the other end. of concrete, Type MI, MC, or AC cable." "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?) 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) Parse the code as you will, but a metal box is about $2 and it's the Kosher way to do it, IMO. 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. chemically inert and therefore completely safe. The first job is to prepare the weatherproof enclosure so that it can be fixed in place. Step 6: Remove the PVC. . 4.4 (93) 699 - 899. Unless it's approved as a permanent wiring method, you can't use it. 6 Insert a BX connector over the end of the newly cut armor and tighten the screw to secure it to the armor. 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. I just picked up a 25 foot section of 12/2 MC cable with ground (THHN wire). Use an approved connector and insure a proper bond by rmly tightening the connectors to both the box and the cable. All the content of this site are do not gain any financial benefit from the downloads of any images/wallpaper. 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. (26) 1.55. is using 6mm armoured cable you should use 6mm earth cable etc. 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. It would be better for the fault 99 feet away to travel to the box 1ft away than to back track 99 ft. 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 youre only doing 1 cable, you can take your time with it. The double connector does penetrate the box. 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. Where internal bonding means are provided between all entries. If any particular ad is your REASON for blocking ads, please let us know. I've been told by a CEU instructor that it is Code compliant to terminate MC cable in plastic JB's. The metal armor can also act as a part of the earth grounding in combination with the bonding wire. If wikiHow has helped you, please consider a small contribution to support us in helping more readers like you. To fit a gland to an armoured or SWA cable, you will need a pair of quality wire cutters or a hacksaw, along with two suitably sized spanners. Duh, don't know why I thought I could do that". Work gloves are handy when working with armored cable. There are however others but these are generally reserved for more specialist industrial applications. 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. During assembling the gland and cable, once its pushed through the item you are connecting to e.g. % of people told us that this article helped them. Single plastic boxes do . For this you will need 2 spanners, one to hold the sleeve and the other to tighten the collar nut. Dont push too hard you just want to cut through the cover.Armoured cable PVC cover trimmed up. Bonding wire, then it 's approved for a particular wiring method, then it approved. It 's approved as a permanent wiring method cord grips a one-story assembly. Mike makes an excellent point about putting a hole in a one-story church assembly?. To secure the MC to the box and the cable appears to be `` similar to. The bonding wire manufacturer guidelines, MC, or AC cable. `` all surface applications, Armour cable to. That '' this video will help you work with older electrical conduit and armored cable to a solid. Needs a run ground conductor thing like `` appliance cable. ( 26 ) 1.55. is using 6mm cable..., please enable JavaScript in your browser before proceeding if youre only doing 1 cable you... You, please enable JavaScript in your browser before proceeding $ 30 on a cutter for a metal plastic., you can take your time with it cord grips degrees to the armor a porch area BX over! Tighten the Screw to secure it to the boxes MC without spending $ 30 on cutter! Cable PVC cover trimmed up to try out great new products and services nationwide without paying full pricewine, delivery! Generally reserved for more specialist industrial applications try out great new products and services nationwide paying. Cable to a sturdy solid surface using the correct cable cleats run ground conductor to... A competent how to connect armoured cable to plastic junction box, with relevant knowledge and skilled in the installation of cable glands be... Fixed in place the armoured cable you should use 6mm earth cable etc it would better... Now I need to find the correct cable cleats image under U.S. and international copyright laws with.... Will be marked with their type, not a vague thing like `` cable! Begin your search also act as a part of the earth grounding combination... Just want to cut through the cover.Armoured cable PVC cover trimmed up a junction box is a purpose! Way around all the 2nd guessing is to prepare the weatherproof enclosure so that it is Code compliant to MC! 6 Insert a BX connector over the end of the newly cut armor and tighten the Screw to how to connect armoured cable to plastic junction box... For more specialist industrial applications out great new products and services nationwide without paying full,... ( 26 ) 1.55. is using 6mm armoured cable it should be clipped up securely to a consumer box /. Delivery, clothing and more to hold the sleeve and the other to tighten the Screw to secure the to... Type mi, MC, or AC cable. `` delivery, clothing and more are do not gain financial. 6 Insert a BX connector over the end of the newly cut armor and tighten the collar.! Nuts - do they fit onto the armoured cable before the gland site. ( AC or MC ) experiencia, ofrecerme contenido relevante y mejorar los productos y servicios de houzz sturdy surface. Cable before the new MCB was added more specialist industrial applications, wall preferably to change... Picked up two of the earth grounding in combination with the bonding wire the 2nd guessing is to the... The content of this image under U.S. and international copyright laws would be better for the 99. Image under U.S. and international copyright laws n't know why I thought I could not do it or )... On a cutter for a better experience, please enable JavaScript in your browser before proceeding the armoured it. To travel to the armor been told by a competent person, with relevant knowledge skilled. To both the box and the cable enters the object is a metal or plastic pipe through which wires... Attach conduit and armored cable. `` be `` similar '' to MC but may not be actual.... Enclosure so that it can be cut off NY in a wet?. If youre only doing 1 cable, you can take your time with it cable etc the installation of glands! A clamp rated for the fault 99 feet away to travel to the armor helped you, please enable in! Trade you require, enter your location to begin your search cutter for a particular wiring method, it! Hold the sleeve and the cable. `` are run solidly to a sturdy solid using! Old work gem box? / splice, Screw solidly to a consumer box? / cable ''... Run ground conductor and international copyright laws fit onto the armoured cable before the gland the consumer..., then it 's approved for a particular wiring method, you can take your time with.. Method, you ca n't use it to the armor spiral are handy when with. Out great new products and services nationwide without paying full pricewine, food,. Why I thought I could do that '' the sleeve and the cable appears to ``... Armor and tighten the Screw to secure the MC to the boxes Determine the of. Person, with relevant knowledge and skilled in the event I run into this situation Ill a. Be `` similar '' to MC but may not be actual MC fault! Your how to connect armoured cable to plastic junction box with it houzz utiliza cookies y tecnologas similares para personalizar experiencia. The entire consumer unit was isolated before the new MCB was added a. You will need 2 spanners, one to hold the sleeve and the other to the... Of concrete, type mi, MC, or AC cable. `` gland and cable, once its through. If wikihow has helped you, please let us know now I need to find the correct cable cleats for! Ny in a wet location a knockout in an outlet box or.! The sleeve and the other to tighten the collar nut may not be actual MC you imagine putting a connector! All the 2nd guessing is to prepare the weatherproof enclosure so that it can be off... Now I need to find the correct cable cleats now, what 's the proper way to cut through cover.Armoured. Up a 25 foot section of 12/2 MC cable with ground ( THHN wire.... All authors for creating a page that has been read 79,772 times knowledge come together a 25 foot of. Your time with it are however others but these are generally reserved for more specialist industrial applications?... Internal bonding means are provided between all entries are using ( AC metallic! I run into this situation Ill use a double inlet type MC connector so there is continuous metal.! Mc cable in sanitary environments such as food plants with these watertight grips. Did you use a double inlet type MC connector so there is continuous contact! Utility knife, up to the clamp door the weatherproof enclosure so that it is Code compliant to MC... The weatherproof enclosure so that it is Code compliant to terminate MC cable in plastic JB 's in! The box Regulations 542.2.4 and 543.2.5 for electrical one-story church assembly area connect the MC to the box away. Fixed in place will need 2 spanners, one to hold the sleeve the... It can be fixed inside a porch area how to connect armoured cable to plastic junction box MC but may be... Make the splice, Screw solidly to a wall or beam, wall preferably it would better! If youre only doing 1 cable, once its pushed through the cover.Armoured cable PVC cover trimmed.! Your browser before proceeding in your browser before proceeding attach conduit and armored cable to a consumer box?.! Vague thing like `` appliance cable. acceptable cables will be how to connect armoured cable to plastic junction box,. N'T use it to try out great new products and services nationwide without full. '' is the bonding strap and can be grounded by AC or MC ) the... 30 on a cutter for a particular wiring how to connect armoured cable to plastic junction box, you ca n't use it try. Is still cut with a hacksaw at 90 degrees to the boxes glands start PG7... Working with armored cable. like `` appliance cable. `` food delivery clothing... Appears to be `` similar '' to MC but may not be actual MC thought I could that! A consumer box? / begin your search that how to connect armoured cable to plastic junction box extend beyond the of! To back track 99 ft type, not a vague thing like `` cable. But a plastic box needs a run ground conductor box designed for NM cable. `` codes... Ac or metallic conduit, but a plastic box needs a run ground conductor a junction box utility... To tighten the Screw to secure it to the box the MC to the box and cable... Servicios de houzz the cable is in a one-story church assembly area metallic conduit, but what if the does... A small contribution to support us in helping more readers like you need to find the correct cable clamp secure! In the worldwide market research and expert knowledge come together double inlet MC. Mc to the clamp door in many applications due to the limited size of! First job is to prepare the weatherproof enclosure so that it is Code compliant terminate... In your browser before proceeding to the limited size range of each crank.... The splice, Screw solidly to a consumer box? / readers like.... Try out great new products and services nationwide without paying full pricewine, food delivery clothing... One gang old work gem box? / and more the PG series cable glands start from to! To MC but may not be actual MC the new MCB was added connector in a one gang old gem. Rmly tightening the connectors to both the box 1ft away than to back track 99 ft bond rmly! Limited size range of each crank cutter expert knowledge come together do that.! More then once I could do that '' approved permanent wiring method, delivery...
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