Root-mean-square. Of current voltage or recurring variable quantities. It is the square root of the average value of the squares of the instantaneous values taken over one or more complete cycles
H. J. Porter (Chairman - Technical Committee), Dictionary of Fire Technology, The Institution of Fire Engineers, The Victory Press (Leicester) Ltd. 1979 UK. (Fr Tech - Brit) {81}
Federal Emergency Management Agency, U.S. Department of Homeland Security, Acronyms Abbreviations &Terms (A Capability Assurance Job Aid), FEMA P-524, Washington, DC, USA 2009. http://www.fema.gov/pdf/plan/prepare/faatlist07_09 .pdf, (D&E - Amer) {844}