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واحد طراحی
واحد طراحی

دانشجویان برق دانشگاه خمینی شهر

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  L1L2L3NeutralGround/
protective earth
Australia and New Zealand (per AS/NZS 3000:2007 Figure 3.2) Red1 White1 (prev. yellow) Dark blue1 Black1 Green/yellow striped (green on very old installations)
Canada (mandatory)[5] Red Black Blue White Green or bare copper
Canada (isolated three-phase installations)[6] Orange Brown Yellow White Green
European Union and all countries who use European CENELEC standards April 2004 (IEC 60446), Hong Kong from July 2007 Brown Black Grey Blue Green/yellow striped2
Older European (IEC 60446, varies by country3) Black or brown Black or brown Black or brown Blue Green/yellow striped3
UK until April 2006, Hong Kong until April 2009, South Africa, Malaysia, Singapore Red Yellow Blue Black Green/yellow striped (green on installations approx. before 1970)
Republic of India and Pakistan Red Yellow Blue Black Green
People"s Republic of China (per GB 50303-2002 Section 15.2.2) Yellow Green Red Light blue Green/yellow striped
Norway Black White/Grey Brown Blue Yellow/green striped, older may be only yellow or bare copper
United States (common practice)4 Black Red Blue White, or grey Green, green/yellow striped or a bare copper wire
United States (alternative practice)5 Brown Orange(delta) Violet(wye) Yellow Grey, or white Green

^1 In Australia and New


ارسال شده در توسط میلاد طاهری-آرش کاویانی