1 Acronym Finder. 2015. 2  AcronymFinder.com 13 Oct. 2015 http://www.acronymfinder.com/Provider-Transaction-Access-Number-(medicare-reimbursements)-(PTAN).html. 3  Chicago style: Acronym Finder. 4  S.v.
The U.S. National Electric code and Canadian Electric Code mandates only white or grey color be used for neutral wires. The International Electrotechnical Commission and countries that abide by it, such as the United Kingdom, use blue for the wiring color code for neutral wire of AC branch circuit. Continue Reading
Gray colored insulated wire and gray phase tape were available but not natural gray. Where a 120/240 V grounded conductor and a 277 V, or other system grounded conductor, are present, then one can be white or gray, and the other is white with a stripe, other than green. Section 400.22 Grounded-Conductor Identification.