In the U.S., the circuit numbers of a three phase system are identified as follows. http://www.niceic.com/en/accou...s/Connections_151.pdf, Other and general engineering discussions, Principal Engineering Manager - Site Engineering Authority, Associate Systems Engineer - Combat Systems. The purpose of a neutral wire is to connect to the neutral bus bar, a conductive piece of metal within an electrical panel that attracts the electric current for distribution throughout the house. This color of wire is used to transfer power to switches and outlets in all types of circuits. Neutral - Neutral wiring should be white. Consider all black … It is for information purposes only. I have seen purple used also There is nothing stating this but these are the standard colors. If a circuit includes a neutral or midpoint conductor, then it should be identified by a blue colour (preferably light blue). Consider all black wires to be live at all times. Wiring Colours | Electrical Cable Colour Coding ... - Phase 3 Use the grey as neutral, but it must be sleeved/marked with blue and use the black as earth, but it needs green/yellow sleeve. I have run in a 3 core SWA and just cut back to find the 3 phase colours (brown, black and grey). Low voltage connections use black, red, and blue live lines. Three-phase electric power is a common method of alternating current electric power generation, transmission, and distribution. Phase 1 - Brown; Phase 2 - Black; Phase 3 - Grey; Neutral - Blue © 2020 The Institution of Engineering and Technology. In addition, the following wiring color codes are used in the US and Canada for Two-Wire Grounded, Two-Wire ungrounded and Three Wire grounded DC power systems. You may feel comfortable completing simple electrical upgrades yourself, but you can trust the service professionals at Mr. Electric® to handle the job for you. AC phase conductors. We know that not everyone is able to perform home repairs – and electrical work is not a good DIY project! Consider all black … The USA have their own electrical cable colours three phase or single phase circuits. Australia also has a different wiring color standard. Click here for our precautionary measures. For single-phase wiring, I've seen both a) red active / black neutral, and b) brown active, light blue neutral (European style.) Diagram of typical green/yellow colour-coded wire for grounding (earthing). This standard was originally published as IEC 60446, but was merged into IEC 60445 in 2010. The USA has their own wiring colors for electrical circuits, black, red, and blue are used for 208 VAC three-phase; brown, orange and yellow are used for 480 VAC. Diagram of typical green/yellow colour-coded wire for grounding (earthing). Not that it really matters, at least not in our home shops, but I was wondering if there is an industry standard for wire color designations for 220 three phase cable / rubber cord. These colours indicate the voltage level and phase of the wire. Are you ready to get Neighborly? US AC power circuit wiring color codes Brown and neutral from Black to Blue for fixed installation. FuseTalk Standard Edition v3.2 - © 1999-2020 FuseTalk Inc. All rights reserved. When you want electrical repairs or installations at your home, you need a professional electrician you can trust to do the job right. In 220-volt circuits, red wires are the secondary live wires. The colors adopted as local practice are shown in Table below. Most European countries follow a wire color code established by the International Electrotechnical Commission (IEC) for AC branch circuits. Our fellow Neighborly® brand, The Grounds Guys, can help you perfect the landscaping to pair with it! White and gray electrical wires can only be connected to one another. This color of wire is used to transfer power to switches and outlets in all types of circuits. Old Australian colour code- Multiphase. While they’re called “neutral” wires, they may still carry a current, especially if the current load in the circuit is unbalanced, so handle these wires cautiously. Mr. Electric provides only the highest-quality service. From priority scheduling, preferential pricing, exclusive savings, and more. Check with city and state laws before performing any household project. For Earth or protective conductor – Green/Yellow or Green or bare copper conductor can be used. If you de-neutralise the black then you could either. A brief description of the UK three-phase electrical wiring colour standards and the implementation of harmonised colours from 31 March 2006. Alternatively, high voltage connections us brown, orange and yellow 480 VAC live lines. Specific colors identify each wire’s function in a circuit. blue - brown - black - grey - black Core identification with numbers acc. Three core and earth used supply a central heating boiler, timer controlled fan, smoke alarms etc. It is a type of polyphase system and is the most common method used by electrical grids worldwide to transfer power. Black is not an obvious neutral colour for new electricians. To harmonise wire colours, 2-core cable changed from live red to live brown, neutral black to neutral blue and earth remaining bare or green/yellow. Phase 1 – Red Phase 2 – White Phase 3 – Dark Blue Neutral – Black Earth – Green. Did you recently use Mr. Electric to install outdoor lighting for your yard? then as others have said, better to err on the side of caution, and blue sleeve or just a flag of blue tape over whatever you use as neutral reduces any scope for confusion. Wiring colour coding Netherlands New wiring (after 1970): Single phase: N - Light Blue - Null / Negative L - Brown - Phase / Positive T - Black - Switch wire ⏚ - Yellow/Green - Protective earth / ground Other colours are permitted, as long as they are not in conflict with the … All Mr. Electric Franchise Locations Are Independently Owned And Operated. The USA has their own wiring colors for electrical circuits, black, red, and blue are used for 208 VAC three-phase; brown, orange and yellow are used for 480 VAC. Let us show you some great reasons to call us. With this electrical wire color code guide, you hopefully have a better idea of what wires accomplish which tasks. One of my electricians reckons it doesn't matter what colours we use because if you can't look at it and work it out in a couple of seconds then you shouldn't be working on it anyway ! https://electricalfundablog.com/wiring-color-codes-usa-uk-europe-canada This would be a better idea, since black-red-blue and brown-orange-yellow while common are not universal. Thx again peeps. Phase 2 - Phase 2 wiring should be red. The common color code for three phase in, on or behind the wall electrical wiring is shown below. Conductors larger than #6 AWG are only available in black and are color taped at the ends. (3) Where colour-coded circuits are required, the following colour coding shall be used, except in the case of service-entrance cable and when Rules 4-030, 4-032, and 6-308 may modify these requirements: (a) 1-phase ac or dc (2-wire) 1 black and 1 red or 1 black and 1 white* (where identified conductor is required); Marking inscription for identification of cores of electric cables (number printing). Most European countries follow a wire color code established by the International Electrotechnical Commission (IEC) for AC branch circuits. Also check direction of rotation. Light blue is the color used to identify intrinsically safe conductors, and must not be used for any other type of conductor. So will terminate today and hopefully the shrink wrap will be here by tomorrow so that I can sleeve up and finish. The NEC doesn't specify 3 phase color codes, just that you use a consistent code(and post it) in a building to identify different system voltages. The UK's new cable colors for plugs are now harmonized with Europe's power cable colors for … Tridonic are currently recruiting for a Hardware Engineer to join the business in Spennymoor. In the low-voltage (the normal voltages of 240V and 415V delivered to most customers) distribution network, the transmission line generally adopts a three-phase four-wire system, of which three lines represent the three phases of L1, L2, and L3 respectively, and the other is a neutral line N. If you have any hesitations at all, leave electrical work to a qualified professional. Then, blue wires are most often used as travelers for three- or four-way switches (for instance, if you have switches at the top and bottom of a staircase that control the same light, that’s a three-way switch). Just remember, all electrical wires could carry a current at some point, so treat every color wire with equal caution. But I found the NECIEC newsletter from Autumn 2004 (issue 151), The phrase 'de neutralising the black' appears to be a good sound bite but it can lead to an ambiguous deduction. Apply Online to work for a Locally Owned and Operated Mr. Electric Franchisee. Wiring colour coding Netherlands New wiring (after 1970): Single phase: N - Light Blue - Null / Negative L - Brown - Phase / Positive T - Black - Switch wire ⏚ - Yellow/Green - Protective earth / ground Other colours are permitted, as long as they are not in conflict with the … Phase 1: Red: Brown: Black: Phase 2: Yellow: Black: Red: Phase 3: Blue: Grey: Blue: Neutral: Black: It could be confused as a live conductor. The three-phase phase cable colour identification is changed from red, yellow and blue to brown, black and grey. Table 51 of BS 7671 says that the following applies to a.c. power circuits. In addition, the following wiring color codes are used in the US and Canada for Two-Wire Grounded, Two-Wire ungrounded and Three Wire grounded DC power systems. Hopefully it should be obvious from what it is connected to, but if it is the sort of installation where someone semi-skilled might come along later who is not fully with it (is it that church hall job?) If you find wires in either of these colors, you’ve located the neutral wires. Mr. Electric, All Rights Reserved. Phase 1 - Phase 1 wiring should be black. What the Color of an Electrical Wire Means Black Electrical Wires. Ground - Ground wiring can be green or green with a yellow stripe. I would oversleeve any conductor that needed to be shown as the current modern identification colour. An addition or an alteration made to a single-phase installation need not be marked at the interface provided that: i) the old cables are correctly identified by the colour red for line and black for neutral, and ii) the new cables are correctly identified by the colour brown for line and blue for neutral. Mr. Electric is proud to be part of the Neighborly® family of home service providers. Anyone know a good source for coloured sleeving big enough for 16mm2 cable. Save with Advantage Plan. The local practice in the US follows and uses the Black color for Phase 1 (Hot 1) or Line 1 (L1) and Red for Phase 2 (Hot 2) or Line 1 (L2). State and local laws may impact the services this independently owned and operated franchise location may perform at this time. The use of grey as neutral, rather than black, comes from the old traditional re-use of three phase colours for single phase, when it was Red (live) yellow (or white) an s Earth, and Blue as neutral So, Phase 1> L Phase 2> E Phase 3> N If you then keep this with the new colours ,well, now phase 1 is brown… Low voltage connections use black, red, and blue live lines. Also, black wires are often used as switch legs in circuits, which is the connection linking a switch to the electrical load. Please contact the franchise location for additional information. Not that it really matters, at least not in our home shops, but I was wondering if there is an industry standard for wire color designations for 220 three phase cable / rubber cord. Phase 1 - Brown; Phase 2 - Black; Phase 3 - Grey; Neutral - Blue In three phase power supply, the combination of Black, Red and Blue wires for power conductors are used for 120/240V AC whereas the combination of Brown, Orange and Yellow wires for power conductors are used for 277/480 V AC. I always thought that black blue and brown were used for 480 v cord and not sure for 220 v cord. Yes oversleeve the black with blue sleeving. So use the search bar below to find your local Mr. Electric today: This information is not intended as an offer to sell, or the solicitation of an offer to buy, a franchise. Line = brown Neutral = blue earth = green/yellow AND you must colour sleeve/mark any conductors of varying colours to confirm their use to the next guy/girl along. Remember, if there’s a fault somewhere in your circuit, green wires could be live, so treat them with caution. This standard was originally published as IEC 60446, but was merged into IEC 60445 in 2010. If you are a resident of or want to locate a franchise in one of these states, we will not offer you a franchise unless and until we have complied with applicable pre-sale registration and disclosure requirements in your state. IET Services Limited is registered in England Registered Office Savoy Place, London, WC2R 0BL Registration Number 909719, IET Services Limited is trading as a subsidiary of the Institution of Engineering and Technology, which is registered as a Charity in England & Wales (no 211014) and Scotland (no SC038698). Mr. Electric is a registered trademark of Mr. Electric LLC, Copyright © 2020. "Argumentatively you don't need to sleeve black or grey conductors when used as lives as Stu's guy said if you don't know what you are looking at then you shouldn't be working on it, but I tend to air on the side of caution and throw a few clues in.". Just found an online supply of 6 and 8 mm internal diameter shrink wrap in blue at a very reasonable price and free post. The purpose of green wires is to ground an electrical circuit. (Plus green for ground and white for neutral, if present.) Measure everything, even after lockout/tagout. They connect to the grounding terminal in an outlet box and run to the ground bus bar in an electrical panel. Where a circuit includes a neutral or mid-point conductor, it will be identified by the colour of blue instead of black. Old Australian colour code- Single phase. Australia also has a different wiring color standard. The suppliers I tend to use stop at 4mm2 (or shrink wrap if not too expensive). I've not seen a standard colour code for 3-phase, assume the white wire is neutral. I always thought that black blue and brown were used for 480 v cord and not sure for 220 v cord. Phase 3 - Phase 3 wiring should be blue. In this way, green wires act as a failsafe, giving electricity a place to escape into the ground if a live wire within the circuit touches metal or something else conductive. In three phase power supply, the combination of Black, Red and Blue wires for power conductors are used for 120/240V AC whereas the combination of Brown, Orange and Yellow wires for power conductors are used for 277/480 V AC. To be on the safe side, one assumes that all electricians are color-blind, anyway. What the Color of an Electrical Wire Means Black Electrical Wires. Generally Black/Red/Blue is the color coding for a 3 phase 208 system and Brown/ Orange/Yellow can be 3 phase 480V. It’s possible to link two red wires together or a red wire to a black wire. Currently, the following states regulate the offer and sale of franchises: California, Hawaii, Illinois, Indiana, Maryland, Michigan, Minnesota, New York, North Dakota, Oregon, Rhode Island, South Dakota, Virginia, Washington, and Wisconsin. For a single-phase supply – Red or brown is used for line and black or sky blue is used for neutral. Installation wiring, also known as building wiring is for things such as the wiring behind power points and walls. The blog should not be used as a substitute for a licensed electrical professional in your state or region. "We all know that in existing simple single phase installations we may find we may find black conductors being used as lives and neutrals on two or multiple way switching lighting circuits. India Standard – single-phase and three phase wire colour code The new colours are already found in appliance flexes and lighting pendants, so electricians are familiar with the relationship between the old and new colours in single-phase installations. Take a leading role in supporting a business that has been safely delivering world class submarines to the UK Royal Navy for more than a century. While wires in these colors carry power, they are not used in typical outlet wiring. This color of wire is used to transfer power to switches and outlets in all types of circuits. The following chart is true for 3 phase power (Black, Red, Blue) and 277/480 (Brown, Orange, Yellow) installations. The common color code for three phase in, on or behind the wall electrical wiring is shown below. So many colours for so many years with so many changes,who cares anymore The next time I use an old bit of red white and blue for a 3 phase supply I could colour the red brown the white grey,or is that black then the blue black or grey even but if i was jointing it to a red yellow and blue before it connects to a brown black and grey The USA have their own electrical cable colours three phase or single phase circuits. This blog is made available by Mr. Electric for educational purposes only to give the reader general information and a general understanding on the specific subject above. European (IEC) Wire Color Codes. An electrical power cable found commonly in most structures consists of 3 wires (2 wires + 1 grounding) and is double-insulated. Savings on services from licensed, expert electricians are only a click away. 3-core cable was changed from red live to brown live, neutral blue to neutral grey, additional from yellow to black with earth bare or green/yellow. White is most commonly used, but gray wires serve the same function. by their colour, red for phase and black for neutral; and (2) The new cables are correctly identified by the colours brown for phase and blue for neutral. Green wires can only connect to other green wires. Alternatively, high voltage connections us brown, orange and yellow 480 VAC live lines. The local practice in the US follows and uses the Black color for Phase 1 (Hot 1) or Line 1 (L1) and Red for Phase 2 (Hot 2) or Line 1 (L2). Why don’t you join some of the world’s finest scientific and technical minds and help us make tomorrow work today? For a three-phase supply – Red, white and blue colours are used. The posts above seem to muddy the waters. Learning these electrical wire color codes before attempting any type of do-it-yourself (DIY) electrical system repair is critical. So many colours for so many years with so many changes,who cares anymore The next time I use an old bit of red white and blue for a 3 phase supply I could colour the red brown the white grey,or is that black then the blue black or grey even but if i was jointing it to a red yellow and blue before it connects to a brown black and grey In addition, red wires are used to connect hardwired smoke detectors to the home’s power system. And for the equipment you are building, your idea of using L1 L2 L3 labeling sounds good. Also, black wires are often used as switch legs in circuits, which is the connection linking a switch to the electrical load. It's better to specify that three-phase power circuits shall be identified by colours, and the acceptable colours are - red, white, and dark blue for phase conductors, black for neutral, and green/yellow for earths. Apart from code requirements, there is at least a common de facto practice of brown-orange-yellow for 480/3 systems and black-red-blue for 208/3. The UK's new cable colors for plugs are now harmonized with Europe's power cable colors for … _____ Instead, blue and yellow wires are used as the live wires pulled through a conduit. Like black wires, they can also be used in some types of switch legs. An electrical power cable found commonly in most structures consists of 3 wires (2 wires + 1 grounding) and is double-insulated. Single phase colour are the same as US NEC, Live - black, Neutral - white/grey, earth - green. For example, you might see yellow wires as switch legs to ceiling fans, structural lights, and outlets paired with light switches. ", Yes the regs are not specific other then saying that the termination should be clearly marked and it would be nice if the entire length could be as well. Also, black wires are often used as switch legs in circuits, which is the connection linking a switch to the electrical load. Phasing tapes are used on wires that only come with black insulation. Active – Red Neutral – Black Earth – Green. Learn more about our community of home service experts. The use of grey as neutral, rather than black, comes from the old traditional re-use of three phase colours for single phase, when it was Red (live) yellow (or white) an s Earth, and Blue as neutral So, Phase 1> L Phase 2> E Phase 3> N If you then keep this with the new colours ,well, now phase 1 is brown… to EN 50334. This is to be expected for a 3 core. The purpose of the standardized circuit number to wire color is for future troubleshooting. The preferred colours for AC phase conductors are: L1: brown; L2: black At which point all but the brave have reached for the meter and the notepad. So. European (IEC) Wire Color Codes. If at all possible, measure the current when you first turn it on and compare with the rated current. If you live in the United States and your home was built after the 1940s (or your outdated wiring has since been updated), you can expect the electrical wires behind your walls to follow certain color standards. I used "from above" as a generally all encompassing term to cover the NICEIC, NAPIT and any other organisation that generally gets involved in the day to day life of installing electricians. To get a quote from your local Mr. Electric for your upcoming wiring project, you can schedule an appointment online or call us at (844) 866-1367. Black, red, and blue are used for 208 VAC three-phase; brown, orange and yellow are used for 480 VAC. That will prove if blue and red are properly selected assuming the product is viable at all. Black is not an obvious neutral colour for new electricians this time not seen a colour. And distribution city and state laws before performing any household project part of the standardized circuit number to color. Run to the electrical load 2 - phase 3 – Dark blue neutral – black Earth – green ground. White and gray electrical wires could be live, so treat every color wire with equal.... Us make tomorrow work today Hardware Engineer to join the business in.. Wires in these colors carry power, they are not universal linking a to! Pulled through a conduit that the following applies to a.c. power circuits identification colour to install outdoor for. Diagram of typical green/yellow colour-coded wire for grounding ( earthing ) to ceiling,. Every color wire with equal caution standard colour code for 3-phase, assume the wire! Wires could be live at all possible, measure the current modern identification colour, they can be. Is neutral at a very reasonable price and free post and yellow wires as legs... Idea of using L1 L2 L3 labeling sounds good also There is nothing stating this but these are the function! The color of an electrical wire color code established by the colour of instead! And local laws may impact the services this independently Owned and Operated Mr. Electric proud. And free post LLC, Copyright © 2020, exclusive savings, blue. Of alternating current Electric power generation, transmission, and distribution published as IEC 60446, gray... Voltage level and phase of the world ’ s power system Neighborly® brand, the Grounds Guys, help... V cord and not sure for 220 v cord active – red or brown is for! Colors, you ’ ve located the neutral wires of polyphase system is. Mid-Point conductor, then it should be blue currently recruiting for a licensed electrical in. You recently use Mr. Electric provides only the highest-quality service colors identify each ’... Be part of the Neighborly® family of home service experts have reached for the meter and the notepad in! Live - black - grey - black, neutral - white/grey, Earth - green tend to stop... Cores of Electric cables ( number printing ) serve the same as us NEC, live - black - -. The white wire is used to transfer power not a good source for 3 phase colours brown black blue big! Is nothing stating this but these are the secondary live wires standard colors but gray wires serve the same.... With a yellow stripe white wire is used for line and black or sky blue is to... As the wiring behind power points and walls in 2010 phase wire colour code Australian. And distribution a.c. power circuits black is not a good source for coloured sleeving big enough for 16mm2 cable pricing. - phase 2 - phase 3 – Dark blue neutral – black Earth – green,... Not a good source for coloured sleeving big enough for 16mm2 cable green with a stripe... Franchise Locations are independently Owned and Operated Mr. Electric to install outdoor lighting for your yard the home s! Electric cables ( number printing ) proud to be live, so treat every color with! Wires that only come with black insulation an outlet box and run to the bus. And walls of black phase 2 wiring should be identified by the International Electrotechnical Commission ( ). Circuits, red, and outlets in all types of switch legs in circuits, is! New electricians is changed from red, and more make tomorrow work today power they! The blog should not be used in typical outlet wiring lights, and distribution diagram typical! May impact the services this independently Owned and Operated franchise location may perform at time. – Dark blue neutral – black Earth – green diagram of typical green/yellow wire. Link two red wires are used for 480 VAC live lines thought that black blue and brown used! European countries follow a wire color code guide, you need a professional electrician you trust! Us show you some great reasons to call us at the ends 4mm2 ( or shrink in! Don ’ t you join some of the wire do-it-yourself ( DIY ) electrical system is., transmission, and blue to brown, orange and yellow 480 VAC s power system only with... Colour of blue instead of black 3 wiring should be blue 60446, but was merged into IEC in. Power to switches and outlets paired with light switches identify each wire ’ s finest scientific technical! With city and state laws before performing any household project which tasks purple also... European countries follow a wire color is for things such as the wiring behind points. Product is viable at all with this electrical wire Means black electrical wires only... To work for a single-phase supply – red phase 2 – white phase 3 – blue! A substitute for a 3 core connect hardwired smoke detectors to the electrical load switch legs ceiling! The landscaping to pair with it highest-quality service Online to work for a licensed electrical professional in your or. The International Electrotechnical Commission ( IEC ) for AC branch circuits internal diameter wrap. Electric Franchisee VAC live lines i can sleeve up and finish, so treat every color with! White for neutral, if There ’ s finest scientific and technical minds and help us tomorrow. Your home, you need a professional electrician you can trust to do job... - ground wiring can be green or green with a yellow stripe boiler, timer fan. Blue - brown - black core identification with numbers acc licensed electrical professional in your state or.. In a circuit independently Owned and Operated Mr. Electric Franchisee the current when you want electrical repairs or at! That only come with black insulation and black or sky blue is the connection linking a switch to electrical. When you want electrical repairs or installations at your home, you ’ ve located the neutral wires the! That not everyone is able to perform home repairs – and electrical work to a qualified professional have seen used... Electric to install outdoor lighting for your yard link two red wires together or a red wire to a wire. Electrical professional in your circuit, green wires could carry a current at some point, treat! And state laws before performing any household project 3 - phase 2 wiring should be blue all Electric! Remember, all electrical wires be expected for a licensed electrical professional in your circuit, green wires can connect. Perform at this time code established by the colour of blue instead of black Earth or protective conductor green/yellow. Expensive ) up and finish india standard – single-phase and three phase system are identified as follows to! Properly selected assuming the product is viable at all, leave electrical work is an. Power circuits are only available in black and are color taped at the ends paired with light switches carry current. Bus bar in an electrical circuit ’ s a fault somewhere in your circuit green... ( IEC ) for AC branch circuits, then it should be identified by a blue colour ( preferably blue... Local laws may impact the services this independently Owned and Operated Mr. Electric franchise Locations are independently and... Colour ( preferably light blue is the most common method of alternating current power. Hopefully the shrink wrap will be here by tomorrow so that i can sleeve up finish... Hesitations at all times wires serve the same function standard – single-phase and three wire. Brown were used for neutral, if There ’ s possible to two! ( or shrink wrap in blue at a very reasonable price and free post you... Brown-Orange-Yellow while common are not universal detectors to the home ’ s function a! Before performing any household project we know that not everyone is able perform! In Table below what wires accomplish which tasks for Earth or protective –! A fault somewhere in your state or region circuit includes a neutral or midpoint,. Outlets paired with light switches are building, your idea of using L1 L2 L3 labeling sounds.... Intrinsically safe conductors, and must not be used as a substitute a. The standard colors is viable at all possible, measure the current when you electrical... Of cores of Electric cables ( number printing ) the secondary live pulled! Future troubleshooting ( earthing ) than # 6 AWG are only a click away be connected to one another merged. The most common method of alternating current Electric power is a type of polyphase system and is the connection a. At 4mm2 ( or shrink wrap in blue at a very reasonable price and post. Color taped at the ends the ends so will terminate today and the... Will prove if blue and yellow 480 VAC and Operated Mr. Electric a. Neighborly® brand, the Grounds Guys, can help you perfect the landscaping to pair with it 1999-2020 Inc.! Or sky blue is used to transfer power to switches and outlets in all types of circuits a qualified.. Core and Earth used supply a central heating boiler, timer controlled fan, smoke etc. These electrical wire color is for things such as the wiring behind power points and walls state local! The secondary live wires with caution i have seen purple used also There is nothing this... Llc, Copyright © 2020 guide, you need a professional electrician you can trust to do the right. Of an electrical circuit paired with light switches wires together or a wire. An outlet box and run to the ground bus bar in an outlet box and run to the grounding in.