What Does Xhhw-2 Mean

XHHW-2, or XLPE High Heat-Resistant Water-Resistant, Wire is a general-purpose wire suitable for use in conduit, raceways, feeders, and branch circuits. It is also often found in power distribution systems in industrial, commercial, and residential buildings. It features XLPE (Cross-linked Polyethylene) insulation.

What does the 2 stand for in Rhw 2?

RHW-2/USE-2 600v and 2KV It can be solid or stranded, bare or tinned annealed copper, designed to operate up to 90°C and up to 600 V in dry and wet environments (the ‘-2’ designation indicates the ‘upgraded’ version of plain old USE/RHW, which can operate up to 90°C in dry environments, but only 75°C in wet ones).

What is XHHW rated for?

XHHW-2 is rated up to 90° C in both wet and dry environments. THHN is rated up to 90° C in dry environments only. Dual-rated THHN/THWN carries a 75° C wet-environment rating. The 0.004” nylon jacket on the THHN is hydroscopic (that is, it absorbs moisture), which prohibits its use in wet locations at any temperature.