RHH-2 : A rubber or XLPE insulated, moisture resistant conductor designed to be used at operating temperatures up to 90 degrees Celsius in dry and wet locations
Young & Company Electric Power Products and Related Engineering Services, Glossary of Electrical Terms, http://www.youngco.com/young2.asp?ID=4&Type=3, CA., USA 2001. (Electr Sfty - Amer) {514}