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Bulk zip cord for building custom extension runs and power feeds. SPT-1 and SPT-2 gauges in 125-foot to 1,000-foot rolls. Green and white wire available.
When You Need Bulk Wire
Every job has power runs that pre-made extension cords cannot handle. Long runs across commercial properties. Custom lengths between outlets and display start points. Feeds that need to be hidden in gutters or along trim. Bulk zip cord lets you cut exactly what the job needs.
SPT-1 vs SPT-2
- SPT-1 (18 AWG). Standard gauge for residential runs under 200 feet. Lighter and easier to work with.
- SPT-2 (16 AWG). Heavier gauge for commercial runs, longer distances, and higher wattage loads. Required for large displays and daisy-chain setups.
Pair With the Right Connectors
Terminate your custom runs with Gilbert plugs and connectors. Male, female, and inline options for SPT-1 and SPT-2. Build exactly what the job requires.
Need pre-built socket wire instead? Check our C9 stringers and spools or C7 stringers and spools with sockets already installed.
Contractor-Grade Quality
UL-listed wire rated for outdoor commercial use. This is the same wire professional installers have been running for years across thousands of jobs. Built to handle cold temperatures, UV exposure, and multiple seasons of use.
Jason Geiman and the ChristmasLightHQ team source every spool from manufacturers that meet our quality standards.
How many feet are you running per job this season?
Frequently Asked Questions
What is the difference between SPT-1 and SPT-2 wire?
Both are 18 AWG copper wire. SPT-2 has thicker insulation for better outdoor durability and moisture resistance. Use SPT-1 for standard residential runs under 200 feet. Use SPT-2 for commercial runs, longer distances, and any job that demands maximum durability.
What wire spacing should I order for socket wire?
For C9 roofline installs, 12-inch spacing is standard residential. 15-inch spacing works for commercial buildings. For C7 detail work, 6-inch spacing fills in tight areas. For mini light connections, you need blank zip cord. Check C9 stringers for pre-socketed options.
How much wire do I need per job?
Measure the roofline or installation run. Add 10 percent for connections, returns around corners, and power feed runs back to the outlet. A 200-foot roofline job needs about 220 feet of wire minimum. Always order extra for the trailer.
Can I add sockets to blank zip cord?
Blank zip cord is for power feeds and extension runs. For socketed stringer wire with C7 or C9 sockets pre-installed, check our C9 stringers or C7 stringers. Those come ready to accept bulbs.