BX became the registered trade name of AC Cable distributed by General Electric who had acquired Sprague Electric. Armored cable was first listed with Underwriters Laboratories bx cable definition Inc. in 1899 for the Sprague Electric Co. of New York. It was originally called “Greenfield Flexible Steel-Armored Conductors,” after one of its inventors, Harry Greenfield.
This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional. If you expect to be doing a lot of cutting, you may wish to invest in a special BX cutter, such as the Roto-Split. This tool costs between $20 and $50 and makes the job of splitting and ripping back BX cable far easier and safer than by hand. Neither of us has had a reply to his cable; instead, he has been told two enemy submarines are on their way to pay us a visit. The second cable quotes mine of last night wherein I ask leave to call for the East Lancs. HBOGo has become such a massive success for cable network HBO that they will start to offer the service as a stand-alone option. Hart Electric LLC An Illinois- based manufacturer of electrical components, and H.I.
Forms of BX can still be found by homeowners renovating their homes. It is not certain how the term “BX” came to represent metal-armored bookkeeping cable, but it may have something to do with the product first being produced in the Bronx borough of New York.
We’ve arranged the synonyms in length order so that they are easier to find. Building wiring is the electrical wiring and associated devices such as switches, meters and light fittings used in buildings or other structures. The QAnon conspiracy theory, which the FBI has labeled a potential domestic terrorism threat, accuses Democrats and some Republicans of being beholden to a cabal of bureaucrats, pedophiles and Satanists. plot, intrigue, machination, conspiracy, cabal mean a plan secretly devised to accomplish an evil or treacherous end. plot implies careful foresight in planning a complex scheme. 12/2 is used for 20-amp circuits and 14/3 wire has 2 “hot” wires and is rated for 15-amp circuits. You can easily find spools of BX cable up to 1,000 feet long.
The installation and construction requirements for Type AC, “armored cable” are located in Article 320 of the NEC. Many in the industry may still incorrectly refer to Type AC as BX cable. Edwin Greenfield and Gus Johnson developed basic armored cable in the early 1900s. The abbreviation BX has stuck to all metal-jacketed cables for decades. Type AC cable, as constructed today, is a significantly improved product.
Section 250.118 permits the armor of Type AC cable to be used as an EGC in accordance with 320.108, which requires an adequate path for fault current. normal balance, a cable consisting of wires contained in a flexible metal tubing, used chiefly in wiring buildings and in supplying electric power to equipment. Cut a 20 centimeter (7.9 in) length of the armor using either a hacksaw or a rotary cutter designed for the purpose. When the cut is nearly through, grab the cable jacket above and below the cut and twist sharply – this should break the remaining armor without the need for the saw to contact the wires inside. Use caution – the metal edges are sharp.Carefully inspect the interior insulation to make sure none of the conductors have been exposed by nicks or gashes. If there is damage, you may need to try again by moving back and redoing another cut.
The requirements in Section 110.21 pertain only to “field applied hazard markings.” Where the NEC requires a caution, warning or danger sign to be field applied, the provisions of 110.21 must be followed. The marking is required to adequately warn of the hazards using words, colors or symbols. The NEC does not require specific text sizes or colors that would be assigned to a warning and the use of symbols. DisclaimerAll content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only.
MC cable has a green-insulated ground wire, used like the bare ground wire in bx cable definition NM cable. BX is also known as Armor Clad or Flexible Metal Conduit cable.
As home inspectors we see a lot of wiring in locations that need protection. Many common areas I find unprotected wiring are in closets and cabinets. Armored or Metal Clad Cables used in exterior installations.
Here are two examples from home inspections of AC/MC cables being used in exterior application that are not appropriate. As you can see they do not have a protective PVC outer jacket that would allow the use on exterior applications. During a Chelan Home Inspection I came across the use of what is often called BX cable. BX is not defined as a term by the NEC and is technically called AC . But another very common area I find unprotected wiring during a home inspection is on the exterior of homes. Any wiring that is on the exterior of the home needs to be rated for use in damp or wet locations.
But then, this show has always been more than just the parody of right-wing cable punditry it was originally made out to be. Well, one expert I talked to said that physically it involves little more than a $20 cable. Almost all of the network and cable news channels said that they would not be showing the cartoons either. Once outdoors, you should supply your lights via 1.5mm² three core steel-wire-armoured cable . Make sure that you only fit weatherproof lights that are suitable for outdoor use and that your circuit is RCD-protected.
A Little Bs On Bx Cables Armored Or Metal Clad Cables Used In Exterior Installations.
The actual gauge for your project will depend upon the length and the operating load to be fed at the far end. Visually verify that your wiring is complete, no exposed conductors remain.Double-check within anyone else working with you, for safety, before proceeding to the next step. Secure the connector to the electrical box with the threaded ring.Many new installations require an inspection at this stage of “rough-in” prior to getting permission to connect any devices to the conductors. Insert a BX connector over the end of the newly cut armor and tighten the screw to secure it to the armor. Be sure to obtain any necessary electrical permits, even if your jurisdiction allows the work to be done by a non-licensed electrician. There is also FMC, called by the slang of “Greenfield” that comes without conductors installed. Knowing when and where a type of cabling system can and cannot be used is very important in electrical installations and is often a mark that a professional has not done the work.
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Bx Cable In American English
If you rip back the metal sheathing, you may find that the insulation is still good. That’s right, the lunchbox special enveloping all food groups between two slices of bread is named for the 4th Earl of Sandwich, an English aristocrat who lived in the 1700s. Words named after people are called “eponyms.” How acquainted are you with the people who inspired these words? Take this quiz to see what you know about the people behind the words. Type MC cable shall be supported and secured by staples, cable ties, straps, hangers, or similar fittings or other approved means designed and installed so as not to damage the cable. A. Type MC cable can be used for service-entrance conductors, feeders and branch circuits in many applications. Section 330.10 of the National Electrical Code includes the general uses permitted for Type MC cable.
So “BX” is defined as “AC” cable and “MC” is defined as Metal Clad cable. These two cable assemblies are very similar in construction.
- Like any other cable, if the armor is nicked, cut, or shredded, the wires inside can be compromised.
- Like conduit, loose but insulated individual wires are encased in BX’s metal shell.
- However, with the exception of electrical wires that run through rigid metal conduits, no other type of electrical cable has as strong an outer casing as does BX cable.
- BX’s metal sheathing runs in a helix-like or twisted manner around the wires.
- BX’s armor, while much stronger than NM’s vinyl, can still be pierced by a determined and ill-placed nail or screw.
Teflon insulated wire is permitted in plenums in many areas. Digital signal 800kHz through long cable; reflections and how to compensate. Infoplease knows the value of having sources you can trust. Infoplease is a reference and learning site, combining the contents of an encyclopedia, a dictionary, an bookkeeping atlas and several almanacs loaded with facts. Our editors update and regularly refine this enormous body of information to bring you reliable information. All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only.
BX is sheathed in a flexible metal spiral made either from aluminum or galvanized steel. BX provides all the advantages of NM cable plus some additional benefits. The flexible metal sheathing is easy to install, about as easy as NM cable. or NM cable in flexible conduit to “jump” to the appliance. Romex is a brand name for a type of plastic insulated wire. If your word has any anagrams, they’ll be listed too along with a definition for the word if we have one. We hope that the following list of synonyms for the word BX cable will help you to finish your crossword today.
These cables are not constructed with an internal bonding strip to ensure an adequate path for fault current and are not recognized in 250.118 as an EGC. Electricity cable wrapped in rubber with a flexible steel outer covering. In addition, while home improvement stores still do carry BX cable, do-it-yourselfers will find a far greater selection of NM cables at retail outlets.
It is possible to cut and rip the armor without a BX cutting tool. You can cut the outer armor with a hacksaw, assisted with a strong pair of wire snippers or pliers. Wires within the armor may display degradation of their rubber insulation.
Many other uses are permitted in other articles for specific applications. As others have said armoured cable, we have lots of it running fom the house down the garden to get power to a shed, greenhouse, workshop and exterior power point. 3/8″ Flexible Metal Conduit connectors are designed to for a variety of cables including BX, AC, AC90 and Metal Clad when connecting https://personal-accounting.org/ to steel enclosures or junction boxes in dry lcoations. Assuming you are installing two switches in a two switch box, you probably should have used 14/2 and 14/3 instead of replacing 14/2 with 12/2. If you are only installing one switch in a one switch box, you should only have one cable in the box. The necklace crossed a plug terminal and shorted the receptacle.
Section 320.2 defines Type AC cable as a fabricated assembly of insulated conductors in a flexible, interlocked metallic armor. The definition sends the NEC user to Section 320.100, Construction, for information. Type AC cable is required to have an armor of flexible tape with an internal bonding strip of copper or aluminum in intimate contact with the armor for the entire length.
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