What SPT wire means
SPT wire is the flat two conductor cord used to build custom length holiday light strands, with sockets clipped onto it where needed.
Also called zip cord, SPT-1, SPT-2.
Where it matters on a holiday lighting job
Cutting strands to the exact roofline looks professional and saves bulbs. Keep a labeled set per customer so takedown and next year's install go faster.
Work it out
- Free calculator: Christmas light installation cost calculator
- Tools, templates and guides: Free holiday lighting resources