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C9 SPT-1 Socket Wire 1000 ft Bulk Spool | 6", 12", 15", 18" & 24" Spacing
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$297.00
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Built for installers. Used on real jobs.
This is the gear working contractors run on real rooflines. C9 and C7 LED bulbs, socket wire, clips, plugs, and complete pro light kits at contractor wholesale pricing. Most orders ship same day if placed before 2 PM ET. Free shipping over $349.
The 4-sentence answer
The C9 SPT-1 1,000 ft Socket Wire Spool is the contractor build-your-own-line standard — 18 AWG copper conductor inside a 0.030″ SPT-1 jacket with E17 sockets pre-installed at 6″, 12″, 15″, 18″, or 24″ spacing. The 1,000 ft spool outperforms shorter spools on cost-per-foot and supports 4–8 medium residential properties per spool depending on bulb count per home. Pick the spacing by the look: 15″ is the residential roofline default (paired with Tuff or Minleon V2 C9 bulbs), 12″ reads denser from the street for commercial, 6″ is for tight-coverage accent runs. Pair SPT-1 (0.030″ jacket, indoor / sheltered residential) or step up to SPT-2 (0.045″ jacket) for cold-climate commercial — both are 18 AWG copper so amperage capacity is identical; only the jacket thickness differs.
Verified specifications
Every value below is pulled from the printed spool label and the bulk-wire cluster page. No marketing inflation.
| Spool length | 1,000 ft per spool |
|---|---|
| Conductor gauge | 18 AWG copper |
| Jacket spec | SPT-1 (0.030″ jacket thickness) |
| Voltage rating | 120V AC line voltage |
| Continuous amp draw (practical) | 7 amps continuous |
| Socket type | E17 (C9 candelabra intermediate) |
| Socket spacing options | 6″ / 12″ / 15″ / 18″ / 24″ |
| Wire color | Green (standard) or White (residential gutter-line) |
| Certification | cETLus listed — Intertek file 5019711 |
| Plug compatibility | Gilbert SPT-1 male plug for SPT-1 jacket (don't cross-match plug to jacket spec) |
Who this spool is built for
Multi-property contractor — build to length, cut on-site
One 1,000 ft spool supports 4–8 medium residential properties depending on roofline length and bulb count. Cut to length on-site, slide on an SPT-1 male plug at the supply end, cap the other end with a knockout female plug. Cost-per-foot beats pre-built stringers once you’re past ~3 properties per season — the inventory math wins.
Residential roofline at 15″ spacing (the bestseller)
15″ spacing is the residential roofline default. Pairs with Tuff Bulbs C9 or Minleon V2 C9 + Wedge Tuff Clip on the shingle edge. A 60 ft front facade needs ~48 bulbs at 15″ spacing; a typical home runs 200–400 bulbs total. The 15″ spacing reads clean from the street without crossing into “commercial dense.”
Permanent / multi-year installs where toughness premium pays back
SPT-1 jacket handles residential and sheltered commercial. For exposed cold-climate outdoor (Minnesota, Wisconsin, North Dakota, mountain) where the wire sees direct sub-zero conditions all season, step up to SPT-2 (0.045″ jacket). Both jackets carry the same 18 AWG copper inside — the only mechanical difference is the jacket thickness.
What this spool works with
- Bulbs
- Any C9 (E17 base) LED bulb — Tuff Bulbs C9 (0.72W), Minleon V2 C9 (0.78W), and other E17 LED variants. The sockets are E17 industry-standard; bulb brand and Kelvin choice are independent. Shop Minleon V2 C9
- Clips
- C9 Wedge Tuff Clip (volume install — shingle + gutter dual-mount), C9 Tuff Clip Original (detail work), C9 Tuff Tile Clip (Spanish / concrete tile), C9 Parapet Clip (stone caps). The clip clamps to the wire at the socket; clip type is independent of jacket spec. Shop C9 Wedge Tuff Clip
- Plugs
- SPT-1 male plug for THIS spool's SPT-1 jacket. Don't slide an SPT-2 plug onto SPT-1 wire — the plug seats too loose, the spike doesn't make a clean conductor bite, and you’ll see corrosion or arcing within a season. Shop SPT-1 plugs
- Timers / controllers
- Any 120V outdoor timer rated for LED loads. The wire passes power transparently; timer compatibility is between the bulb and the timer, not the wire.
- Will NOT work with
- C7 bulbs (E12 base — use C7 socket wire instead). SPT-2 plugs (jacket mismatch). Bare-wire applications without sockets (use bulk zip cord for those).
SPT-1 vs SPT-2 socket wire
| Spec | SPT-1 (this spool) | SPT-2 |
|---|---|---|
| Conductor gauge | 18 AWG copper | 18 AWG copper (identical) |
| Jacket thickness | 0.030″ | 0.045″ |
| Continuous amp draw | 7 amps | 7 amps (identical — same copper) |
| Voltage rating | 120V AC | 120V AC |
| Cold-weather rating | Indoor / sheltered residential | Cold-climate outdoor (sub-zero) |
| UV degradation timeline | 3–4 seasons direct sun | 5–7 seasons direct sun |
| Best for | Residential, sheltered commercial | Commercial, exposed, cold-climate |
| Per-foot cost | Lower | ~15–25% premium for the heavier jacket |
See all C9 socket wire side by side →
How to install
- Measure the run + cut to length. Walk the eave and pace the install length. Cut from the spool with sharp scissors or a wire cutter — SPT-1 jacket cuts clean without stripping. Use the measure-as-you-go workflow: cut one run at a time, plug-test, then cut the next.
- Slide on the male plug + cap the female end. Use the SPT-1 male plug to match the jacket spec (don’t cross-match SPT-2 plugs to SPT-1 wire). The vampire spike on the plug pierces both copper conductors when seated firmly. Cap the line end with an SPT-1 female plug with knockout tab so it’s ready for end-to-end connection if you extend the run.
- Pre-bulb at the shop, install at the property. Twist a C9 LED bulb into every socket before transport. Coil the assembled stringer into a labeled garbage can. On the roof, snap a Wedge Tuff Clip onto each bulb base and snap the clip to the shingle or gutter edge. Mid-roof bulb swaps cost 4x the time of pre-mount swaps — bench-test the line before walking onto the ladder.
Certifications and compliance
- cETLus mark — The wire is tested as part of the cETLus-listed seasonal lighting system (Intertek file 5019711). Equivalent to UL Listed for code-compliant installations in the US + Canada.
- 18 AWG copper conductor — Solid copper, not copper-clad aluminum. Critical for long-run amp capacity and corrosion resistance over multiple seasons.
- Gilbert SPT plug standard — The vampire-plug topology is the contractor industry default. Compatible plug brands include Gilbert, Stayhold, and store-brand equivalents that meet the same SPT spec.
- Outdoor seasonal use — Rated for residential and sheltered commercial install conditions. For exposed cold-climate runs, step to SPT-2.
Warranty
Multi-season reuse warranty on C9 SPT-1 1,000 ft Socket Wire Spools from Christmas Lights HQ. Covers jacket cracking, socket failure, or conductor break under normal install conditions.
Not covered: wire damaged by lawn equipment, animal chew through, cuts from the installer at the wrong measure, runs left exposed to direct UV year-round (use SPT-2 or remove between seasons), exceeding the 7-amp continuous load.
Full warranty terms → | Warranty claim contact →
Questions contractors actually ask
What’s the actual difference between SPT-1 and SPT-2?
Jacket thickness only. SPT-1 is 0.030″ jacket; SPT-2 is 0.045″. Both are 18 AWG copper conductor inside — identical amp capacity and identical voltage rating. SPT-2’s thicker jacket survives sub-zero outdoor exposure and direct UV better; SPT-1 wins on per-foot cost for residential and sheltered runs.
How many bulbs can I run on one 1,000 ft spool?
Depends on spacing: at 15″ spacing (residential default) a 1,000 ft spool holds ~800 sockets. At 12″ spacing ~1,000 sockets. At 24″ spacing ~500 sockets. Practical install: split the 1,000 ft across 4–8 medium residential properties depending on roofline length. Don’t exceed the 7-amp continuous limit per circuit (~1,800 Minleon V2 bulbs theoretical at 0.78W each, but cap at 80% of circuit capacity per code).
Which spacing should I order?
15″ is the residential roofline default — the bestseller across the SPT-1 spool variants. 12″ reads denser from the street, used for commercial storefronts and high-impact residential. 18″ or 24″ are for accent runs (driveway gates, light poles, fence runs). 6″ is for tight-coverage display work like garland-style runs. Most contractors stock 15″ in volume + a smaller set of 12″ for commercial bids.
Cuts cleanly with scissors or do I need a wire stripper?
Cuts cleanly with sharp scissors or a wire cutter. SPT-1 jacket scores easily; the copper conductor inside cuts straight through. You don’t need to strip the jacket for vampire-plug install — the plug spike pierces both jacket and conductor when you crimp it down.
What plug brand should I use?
Any Gilbert SPT-1 male plug is the industry default. CLHQ stocks Male Gilbert Plugs SPT-1 for sliding onto the line supply end and Female Gilbert Plugs SPT-1 with knockout tab for capping line ends. Don’t mix SPT-2 plugs onto SPT-1 wire — the slide-on fit is too loose and the spike won’t make a clean conductor bite.
How do I store the spool between seasons?
Indoor climate-controlled storage if possible. Direct UV ages the SPT-1 jacket faster than the install season itself does — summer storage on a hot porch shortens spool life by 1–2 seasons. Keep the cut ends capped (a piece of electrical tape over each end works) to prevent dust in the sockets.
UV degradation timeline?
3–4 seasons of direct-sun exposure before SPT-1 jacket starts to chalk and lose flexibility. Most contractors remove the wire at season’s end, which extends spool life to 5–7 seasons. Permanent year-round installs should step to SPT-2 or to a permanent-lighting system like King 24V.
Compatible with Tuff bulbs and Minleon V2?
Yes — both. The sockets are E17 industry-standard, which is what both Tuff Bulbs C9 (0.72W) and Minleon V2 C9 (0.78W) screw into. You can also mix bulb brands on the same spool — run Minleon V2 on the high-visibility front facade and Tuff on the side / back / valley runs.
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Orders placed before 2 PM ET ship the same day. Free shipping on orders over $349. Most orders arrive in 2-5 business days via UPS or FedEx Ground.