AC/DC Wire and Supply 10' EA THHN THWN MTW 4 AWG Gauge - Black - White - Red - Green - Ground Hook Up Copper Stranded Building Hook Up Wire: Amazon.com: Tools & Home Improvement
Southwire 20500501 THHN 4 Gauge Building Wire, Stranded Type, White, 500 ft
Southwire SIMpull 1000-ft 4-AWG Stranded Blue Copper THHN Wire (By-the-roll) in the TFFN & THHN Wire department at Lowes.com
Black #4 Gauge THHN 19-Stranded Copper Building Wire (100ft Cut) - Amazon.com