Building Wires
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TW
Heat and moisture resistant thermoplastic insulation, solid or stranded wire used for building electrical installation in wet and dry location not to exceed 600 volts. Maximum conductor operating temperature 60oC.
THW
Moisture resistant thermoplastic insulation, solid or stranded wire used for building electrical installation in wet and dry location not to exceed 600 volts. Maximum conductor operating temperature 75oC.
