What Color Wire Is L1 And L2 240v
Guide to Edifice Electric Wiring Color Codes
- POST a QUESTION or COMMENT about Electrical Wiring Color Codes & Conventions for 120V or 240V A/C Circuits in Buildings
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Electrical wiring colour codes:
This article describes the electric wiring color code conventions for 120V or 240V Air conditioning circuit wiring in buildings in Canada, the U.S., the U.K. and the I.E.C.
Quoting from administrative codes & standards for each region we provide a table summarizing the electric current and prior wiring color code conventions used by electricians in building wiring.
For each color code table we include potency citations and links to sources of codes, books, standards and wiring guidelines.
We point out with photo-examples that while wire color lawmaking theory is squeamish and all that, in the existent world of working on existing buildings, wires are not always reliably color-coded and colors may in fact be impossible to discern. Some of the wire color images here were adapted from information provided by the Malta Resource Authorisation's excellent document on Harmonisation of Wiring Colour Codes - cited below.
Nosotros likewise provide an Commodity Alphabetize for this topic, or you can try the page top or bottom SEARCH BOX equally a quick way to observe data you need.
Building Electrical Wiring Color Codes & Conventions for 120V or 240V A/C Circuits
This new type NM-B 14-three electric wire has color coded conductors that are piece of cake to spot and sympathise:
- Black - use for line voltage or "hot" wire
- Cherry - a second line voltage or "hot" wire
- White - neutral
- Bare - protective ground
But as we will illustrate below, on some older buildings spotting any color at all in the wiring insulation or jacket can be difficult or even incommunicable. Here are links to the electrical wiring color code conventions used past diverse countries.
Article Contents:
- ELECTRICAL WIRING Color CODES
- I.E.C. I.Due east.E. ELECTRICAL WIRING Colour Lawmaking Chart
- U.K. ELECTRICAL WIRING COLOUR Code CHART
- U.s.A. ELECTRICAL WIRING COLOR CODE Nautical chart
- WIRE COLOR Code ABBREVIATIONS
| | ||||
| Wire Insulation Colour | Culling Wire Colors | Label | Function | Comments |
Black | | Line voltage, single phase | Abbreviation: BK | |
| Blackness | Brown | | Line voltage, three-phase | Abbreviation: BK, BN, RD |
Red | | Line voltage, single phase, second "hot" wire | Frequently used to indicate switched power | |
| Cerise | Orangish | | Line voltage, three-phase | Abbreviation: RD |
White | Gray | | Neutral | In wiring a switch the electrician may use the white wire equally a 2nd hot conductor and will marker each end of the wire with black electrical record - shown below. Abbreviation: WT, GY |
Blue | Yellow | | Line voltage, 3-phase | Abbreviation: BL, YL |
Green | | Protective ground wire Abridgement: GN | ||
Green + Yellow | | Protective ground wire Abbreviation: GN+YL | ||
Bare | | Protective ground wire, no insulation | ||
| Orange | Yellowish | | "Excepted voltage", these wires may be hot when main disconnect is switched off" Abbreviation: OR, YL | |
Notes to the table to a higher place
Wiring color code standard sources:
one. National Electric Code 2011 (NEC) - see http://world wide web.nfpa.org/ (adopted in all fifty U.S. states)
2. UL508A, Section 66.five.3 & 66.9
3. NFPA 79, Chapter 13 - see http://world wide web.nfpa.org/
Some sources include ruddy with white tracer line = switched neutral
On older wiring such as this rubber and fabric-jacketed household wiring from a U.S. dwelling house, figuring out what the heck the wire colors are can itself exist a challenge.
Await closely at the textile roofing of the two wiring strands in our photograph.
The upper wire is the "white" or neutral wire.
The lower wire, whose fabric insulation is black with red and white tracer threads is the "blackness" or hot wire.
But sometimes there is no clear color distinction between the two wires: you lot'll need to trace the wiring and utilize a DMM or VOM to figure out which wire is "hot" and which is neutral or footing.
| | ||||
| Wire Insulation Color | Alternative Wire Colors | Label | Function | Comments |
| Black | | Line voltage, single phase | Abbreviation: BK | |
| Reddish | | Line voltage, single phase, 2d "hot" wire | Abbreviation: RD | |
| White | | Neutral | Abbreviation: WT | |
| Black | | Line voltage, iii-phase | ||
| Cherry | | Line voltage, iii-phase | ||
| Blue | | Line voltage, three-phase | Abbreviation: BL | |
| Green | | Protective ground wire Abbreviation: GN | ||
| Green + Yellow stripe | | Protective footing wire Abbreviation: GN+YL | ||
| Blank | | Protective ground wire | ||
Notes to the table above
1. 2012 Canadian Electrical Lawmaking (CEC) - come across http://shop.csa.ca
Mississauga Function 5060 Spectrum Fashion, Suite 100 Mississauga, Ontario Canada, L4W 5N6 Price-Costless: (800) 463-6727 Tel: (416) 747-4000 Fax: (416) 747-2473
Edmonton Office 1707-94 Street N Westward Edmonton, Alberta Canada, T6N 1E6 Main: (780) 450-2111 Sales: (780) 490-2007 Fax: (780) 490-2059
This knob-and-tube electrical wiring photo has useful information for the electrician or building inspector.
First we tin see that if we're in luck, the fabric portion of the wiring insulation may be intact and may clearly show that one conductor is white (neutral) and the other black (hot). With age the white insulation may accept go tan or even chocolate-brown in color.
2d I'm a scrap nervous about how that white wire is stripped back and is in contact with the hot black wire (arrow).
Finally, of form there is no protective ground on this circuit - we've got just two wires with which to debate.
Notes to the table higher up
Three Stage Wiring Colour Codes
Notes:
The U.Thousand. currently follows the IEC Ac wiring colour codes given at I.E.C. I.East.Due east. Electric WIRING Color Lawmaking CHART
New wiring colour codes replaced existing red & blackness stage & neutral conductors (left) with dark-brown and blueish (right) beginning in 2005.
Where extensions or new piece of work can outcome in mixed wiring colours, a warning must be fixed near the distribution board stating:
CAUTION: this installation has wiring colours to two versions of BS 7671. Great care should be taken before undertaking extension, alteration or repair that all conductors are correctly identified.
Regulating dominance, IEC Air conditioning
I.Due east.E. Regulations (UK Standard BS 7671:2001) Requirements for Electrical Installations, IEE Wiring Regulations, Sixteenth Edition Amendment No. 2: AMD 14905, March 2004
"New Stock-still Wiring Colours - A Practical Guide", world wide web.nicelc.org.uk
"The IEE, ELectrician'due south Guide to the building regulations, including Approved Certificate P: Electrical Condom in Dwellings, Chapter 11"
Republic of malta Resources Authority, "Harmonisation of Wiring Colour Codes, Practical Guidelines", http://mra.org.mt
www.i.eastward.e.org/cablecolours
Iii Stage Wiring Colour Codes & Colour Changes
Three stage wiring colour codes & color changes are shown only below:
Failure to Follow Wiring Colour Code Conventions
This wiring shown beneath: well don't even think well-nigh figuring this out by colour codes. Someone has simply grabbed a slice of yellow wire and a bluish wire, left an open splice, and jury-rigged something (not shown in our photo).
Sentry out: Simply when yous see patently amateur electrical--wiring similar this it's a red flag to watch out, asking "what else did this swain wire in this edifice?" How dangerous is it?
| ||||
| Wire Insulation Color | Alternative Wire Colors | Label | Office | Comments |
| Brownish | Black | | Line voltage, single stage | Abbreviation: BN, BK |
| Blueish | Blue | | Neutral | Abbreviation: BL |
| Brownish | Black | | Line voltage, 3-stage | L1 is dark-brown, black alternating |
| Black | Brown | | Line voltage, 3-phase | L2 is black, dark-brown is an alternating |
| Gray | Chocolate-brown Blackness | | Line voltage, 3-phase | L3 is gray, dark-brown and black are alternates Abridgement: GY, BN, BK |
| Dark-green + Yellow stripe | | Protective Earth wire Abridgement: GN+YL | ||
Note to the tabular array above
Regulating authority, IEC Air conditioning
Notation to the table above
[i] In the U.S. UL (the Underwriter's Laboratory) has published wiring color acronyms and abbreviations. We have included the standard wiring colour code abbreviations along witht the full color name in our tables of wire color standards in the article above. - retrieved 24 Feb 2014, original source: http://industries.ul.com/plastics-and-components/plastics/color-codes-and-abbreviations
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What Color Wire Is L1 And L2 240v,
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