#1 Insulated Copper

#1 Insulated Copper Wire

Insulated copper electrical wire bearing between 65-79% copper, untinned.  Most THHN electrician's wire qualifies.  Can be stranded or not.  Must be bigger than 18 AWG.  Includes some well-pump wire and romex.  Excludes older cloth insulated romex.  Wire is stiff and holds its shape when bent.