![SPT-1 Type Covered - 2 Line Pattern - Flat Wire SPT-1 Type Covered - 2 Line Pattern - Flat Wire](https://cdn11.bigcommerce.com/s-bqp0js5qot/images/stencil/original/f/spt-1-2linepattern__80838.original.jpg)
SPT-1 Type Covered - 2 Line Pattern - Flat Wire
18/2 SPT-1 - Fabric Covered - 2 Line Pattern - Wire
The main difference between SPT-1 and SPT-2 electrical cord is in the thickness of insulation. SPT-1 gives you insulation that's 0.03" thick while SPT-2 is 0.045". With 50% thicker insulation, SPT-2 is the Wire of choice for anything that is reaching close to 7-amps. Both SPT-1 and SPT-2 have the same maximum amperage. For Common Questions about Lamp Wire click here