This 20-gauge MTW wire has heat- and moisture-resistant, color-coded or striped insulating PVC jackets. The 20 AWG wire features a smaller diameter for terminal block connections that cannot accept larger wire. Available in 500-ft spools, the electrical wire is offered in 10 solid colors or striped in white with blue, blue with white, white with orange or green with yellow spiral stripes to make them easily identifiable from any angle. The wire is UL-listed and RoHS- and CSA-compliant.