All American Christmas Co. offers a large selection of Christmas lights spools which are perfect for the individual or businesses. These 500 and 1000 foot spools allow you to create light strings specific for your decorating needs. Both 500' and 1000' lengths are available in black, brown, green and white color options as well as choices for SPT-1 or SPT-2 insulation rating. C7 sockets fit candelabra/E-12 base bulbs and work for both incandescent and LED bulb styles.
The difference between SPT-1 and SPT-2 wire. This rating refers to the thickness of the insulation, which in part determines the amperage the wire itself can handle. SPT-1 can handle a maximum 7 Amps per run. SPT-2 can handle 10 amps.