NEMA HP 5:2009 Electrical And Electronic Crosslinked, Modified Polyethylene (xlpe) Insulated 125 Degrees C Hook-up Wire, Types L (600 V), Ll (1000 V), And Lx (3000 V) Addresses specific requirements for crosslinked, modified polyethylene insulated solid and stranded wire, designed to the internal wiring of high reliability electrical and electronic equipment.