{"product_id":"female-plugs-with-knockout-tab-spt-2","title":"Female Gilbert Plugs SPT-2 (with Knockout Tab)","description":"\u003c!-- PDP v1-clone — 2026-05-22 — female-plugs-with-knockout-tab-spt-2 cloned from spt-2-male-zip-plugs archetype --\u003e\n\n\u003c!-- Section 2: Quick-answer block --\u003e\n\u003cdiv class=\"clhq-quick-answer\" style=\"padding:24px;background:#f8f5f0;border-left:4px solid #c8102e;margin:24px 0;\"\u003e\n  \u003ch2 style=\"margin-top:0;font-size:1.25rem;\"\u003eThe 4-sentence answer\u003c\/h2\u003e\n  \u003cp\u003eThe Female Gilbert Plug SPT-2 (with knockout tab) is the line-end connector that lets you chain a downstream stringer OR cap the end of a SPT-2 run. The knockout tab is removable — pop it out to chain another segment, leave it in to cap the line. Same UL-rated slide-on construction as the male SPT-2 plug: insulation-displacement contact teeth bite through the wire jacket when the cover snaps. Match SPT-2 plugs to SPT-2 wire (0.045″ jacket) — never cross-match with SPT-1.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c!-- Section 3: Verified specs --\u003e\n\u003ch2\u003eVerified specifications\u003c\/h2\u003e\n\u003cp class=\"clhq-source-note\"\u003eEvery value below is pulled from the printed bag label and the plugs cluster spec source. No marketing inflation.\u003c\/p\u003e\n\u003ctable class=\"clhq-specs-table\"\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003cth\u003ePlug type\u003c\/th\u003e\n\u003ctd\u003eFemale (line-end \/ chain-end)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eWire spec\u003c\/th\u003e\n\u003ctd\u003eSPT-2 (0.045″ jacket)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eConductor\u003c\/th\u003e\n\u003ctd\u003e18 AWG copper compatible\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eKnockout tab\u003c\/th\u003e\n\u003ctd\u003eYes (removable for chaining downstream)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eConnection method\u003c\/th\u003e\n\u003ctd\u003eSlide-on with insulation-displacement contact\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eVoltage rating\u003c\/th\u003e\n\u003ctd\u003e120V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eAmperage rating\u003c\/th\u003e\n\u003ctd\u003e10A\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003ePack size\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eCertification\u003c\/th\u003e\n\u003ctd\u003eUL Listed\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003c!-- Section 4: Use-case scenarios --\u003e\n\u003ch2\u003eWho this plug is built for\u003c\/h2\u003e\n\u003cdiv class=\"clhq-best-for-grid\"\u003e\n  \u003cdiv class=\"clhq-best-for-card\"\u003e\n    \u003ch3\u003eContractor cutting custom-length runs from 1,000 ft spools\u003c\/h3\u003e\n    \u003cp\u003eThe volume use case. A 1,000 ft SPT-2 bulk spool supports 4–8 medium residential properties when you cut to length. Each custom run needs one female plug at the supply end and a fefemale plug at the line end (capped if it’s a single stringer; with knockout tab if you’re daisy-chaining). 50\/Pack covers ~25 single-stringer runs; 1,000\/Case is the contractor inventory base for a busy season.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"clhq-best-for-card\"\u003e\n    \u003ch3\u003eMid-season replacement of damaged factory plugs\u003c\/h3\u003e\n    \u003cp\u003eWhen a factory plug on a pre-built stringer gets damaged (animal chew, lawn-equipment cut, water ingress), splice in a Gilbert Female SPT-2. Cut back to clean conductor, slide on the Gilbert, crimp down. Mid-season repair takes 30 seconds vs returning the whole stringer for warranty.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"clhq-best-for-card\"\u003e\n    \u003ch3\u003eBuild-your-own kit assembly for new install crews\u003c\/h3\u003e\n    \u003cp\u003eTeaching new crew members to assemble custom stringers from bulk SPT-2 + Gilbert plugs is a skill multiplier — one trained installer can build custom-length stringers for the rest of the crew to hang. 50\/Pack is the apprentice training set; once they’re fluent, the crew transitions to 1,000\/Case inventory.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- Section 5: Compatibility --\u003e\n\u003ch2\u003eWhat this plug works with\u003c\/h2\u003e\n\u003cdl class=\"clhq-compat-list\"\u003e\n  \u003cdt\u003eWire\u003c\/dt\u003e\n  \u003cdd\u003eSPT-2 socket wire (0.045″ jacket) ONLY. Don’t cross-match to SPT-1 (0.030″ jacket) — the slide-on plug fits too loose, the vampire spike doesn’t bite the conductor cleanly, and you’ll see corrosion or arcing within a season. Use the matching Male Gilbert Plug SPT-1 on SPT-1 wire. \u003ca href=\"\/collections\/bulk-wire-zip-cord\"\u003eShop SPT-2 socket wire\u003c\/a\u003e\n\u003c\/dd\u003e\n  \u003cdt\u003eLine-end partner\u003c\/dt\u003e\n  \u003cdd\u003eFemale Gilbert Plug SPT-2 with knockout tab (for daisy-chain ends) or Female Gilbert Plug SPT-2 without knockout tab (for final terminating ends). The full Gilbert SPT-2 family covers both daisy-chain and terminate-here line ends. \u003ca href=\"\/collections\/plugs-connectors\"\u003eShop Female Gilbert SPT-2\u003c\/a\u003e\n\u003c\/dd\u003e\n  \u003cdt\u003eExtension cords\u003c\/dt\u003e\n  \u003cdd\u003eAny standard 120V outdoor extension cord with a polarized female outlet. The Gilbert Male plug seats into the cord like any standard 2-prong line-voltage plug.\u003c\/dd\u003e\n  \u003cdt\u003eBulbs and clips\u003c\/dt\u003e\n  \u003cdd\u003eIndependent of plug spec. The plug terminates the wire; bulb brand and clip type are independent choices on the stringer.\u003c\/dd\u003e\n  \u003cdt\u003eWill NOT work with\u003c\/dt\u003e\n  \u003cdd\u003eSPT-1 socket wire (use SPT-1 female plug instead). Mini-light pre-built strings (those use molded factory plugs, not vampire-spike Gilberts). C9 or C7 sockets directly (the plug terminates wire, not sockets).\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003c!-- Section 6: Comparison --\u003e\n\u003ch2\u003eFemale SPT-2 (knockout) vs Female SPT-2 plugs\u003c\/h2\u003e\n\u003ctable class=\"clhq-compare-table\"\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n\u003cth\u003eSpec\u003c\/th\u003e\n\u003cth\u003eFemale SPT-2 (knockout)\u003c\/th\u003e\n\u003cth\u003eFemale SPT-2\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003cth\u003ePosition on line\u003c\/th\u003e\n\u003ctd\u003eDownstream \/ line-end\u003c\/td\u003e\n\u003ctd\u003eUpstream \/ supply-end\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eChains another segment?\u003c\/th\u003e\n\u003ctd\u003eYes (pop the knockout tab)\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eWire spec\u003c\/th\u003e\n\u003ctd\u003eSPT-2 only\u003c\/td\u003e\n\u003ctd\u003eSPT-2 only\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eConnection method\u003c\/th\u003e\n\u003ctd\u003eSlide-on IDC\u003c\/td\u003e\n\u003ctd\u003eSlide-on IDC\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eBest for\u003c\/th\u003e\n\u003ctd\u003eLine-end cap OR chain point\u003c\/td\u003e\n\u003ctd\u003eSupply end of every C9\/C7 stringer\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003ca href=\"\/collections\/plugs-connectors\"\u003eSee all Gilbert plug variants side by side →\u003c\/a\u003e\u003c\/p\u003e\n\n\u003c!-- Section 7: Install how-to --\u003e\n\u003ch2\u003eHow to install\u003c\/h2\u003e\n\u003col class=\"clhq-howto-steps\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCut the SPT-2 socket wire to length and trim the end square.\u003c\/strong\u003e Use sharp scissors or wire cutters. Cut straight across the jacket so both conductor strands are even — a slanted cut makes the vampire spikes bite one conductor before the other and produces an unbalanced connection.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSlide the wire into the Gilbert Female SPT-2.\u003c\/strong\u003e The plug body has a slot that accepts the SPT-2 jacket. Push the wire in until it’s fully seated — the jacket should bottom out against the back of the plug body. Don’t leave the wire short-inserted, the spikes won’t reach both conductors.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCrimp the plug shut with hand pressure or pliers.\u003c\/strong\u003e Press the two halves of the plug body together until they snap closed. The vampire spikes pierce both jacket and copper conductor simultaneously, making the supply connection. Test the line by plugging into a GFCI outlet — full string should light. If only half the string lights, the wire was cross-aligned in the plug body; cut back and re-terminate.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003c!-- Section 8: Certifications --\u003e\n\u003ch2\u003eCertifications and compliance\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGilbert brand — industry-standard SPT plug\u003c\/strong\u003e — The vampire-spike Gilbert topology is the contractor industry default. Compatible across all SPT-rated socket wire from any manufacturer that meets the SPT-1 or SPT-2 spec.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePolarized 2-prong line voltage\u003c\/strong\u003e — One prong wider than the other, matching standard US polarized outlets. Prevents reverse-polarity insertion that could energize the neutral side of the line.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSPT-rated jacket \/ 18 AWG conductor compatibility\u003c\/strong\u003e — Designed for 18 AWG copper conductor inside SPT-1 or SPT-2 jacket. Don’t use with non-SPT wire (different jacket cross-section won’t seat properly).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutdoor seasonal use\u003c\/strong\u003e — Same UV and freeze-thaw tolerance as the matching SPT-2 wire jacket. For permanent year-round installs, step up to a sealed-gasket plug system.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c!-- Section 9: Warranty --\u003e\n\u003ch2\u003eWarranty\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eManufacturer defect warranty\u003c\/strong\u003e on Male Gilbert SPT-2 Plugs from Christmas Lights HQ. Covers cracked plug bodies, misaligned spikes, or premature corrosion under normal install conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNot covered:\u003c\/strong\u003e plugs cross-matched to SPT-1 wire (wrong jacket spec), plugs installed on cut conductor that wasn’t square, water pooling at the plug seam (use drip loops on outdoor chains), animal damage, attempts to splice non-SPT wire into the plug.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"\/pages\/warranty-policies\"\u003eFull warranty terms →\u003c\/a\u003e  |  \u003ca href=\"\/pages\/contact\"\u003eWarranty claim contact →\u003c\/a\u003e\u003c\/p\u003e\n\n\u003c!-- Section 10: V8 video — OMITTED (V8 build-your-own line demo not verified live as of 2026-05-20) --\u003e\n\n\u003c!-- Section 11: FAQ --\u003e\n\u003ch2\u003eQuestions contractors actually ask\u003c\/h2\u003e\n\u003cdiv class=\"clhq-faq-grid\"\u003e\n  \n  \u003cdetails\u003e\u003csummary\u003eWhat's the knockout tab for?\u003c\/summary\u003e\u003cp\u003eThe knockout tab is the small plastic dimple on the fefemale plug body. Leave it in to cap the end of the line (final stringer in a chain). Pop it out (with pliers) to expose a male-plug socket so you can chain another downstream stringer to extend the run.\u003c\/p\u003e\u003c\/details\u003e\n  \u003cdetails\u003e\u003csummary\u003eCan I use this plug on SPT-1 wire?\u003c\/summary\u003e\u003cp\u003eNo. SPT-2 plugs only fit SPT-2 wire (0.045″ jacket). The contact teeth on this plug are sized for the thicker SPT-2 jacket; using on SPT-1 (0.030″) gives loose, intermittent contact and damages the teeth.\u003c\/p\u003e\u003c\/details\u003e\n  \u003cdetails\u003e\u003csummary\u003eHow many stringers can I chain end-to-end with these?\u003c\/summary\u003e\u003cp\u003ePer code, stay under 80% of circuit capacity (1440W on a 15A circuit). At 0.78W per C9 bulb, that's ~1,800 bulbs across all chained stringers. Most contractors split the chain at 500-800 bulbs per supply point for serviceability.\u003c\/p\u003e\u003c\/details\u003e\n  \u003cdetails\u003e\u003csummary\u003eWill the knockout-tab feature wear out from repeated install\/takedown?\u003c\/summary\u003e\u003cp\u003eNo — the knockout tab is designed to be removed once at first install. After it's popped, the plug stays in chain-mode for the life of the install. Reinstalling the tab is not supported.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003c\/div\u003e\n\n\u003c!-- Section 12: Reviews --\u003e\n\u003ch2\u003eCustomer reviews\u003c\/h2\u003e\n\u003cdiv id=\"judgeme-product-reviews\" class=\"judgeme-product-reviews\" data-product-id=\"8807928529070\"\u003e\n  \u003c!-- Judge.me OS 2.0 app embed renders the review widget here automatically --\u003e\n\u003c\/div\u003e\n\n\u003c!-- Section 13: Related products --\u003e\n\u003ch2\u003eBuild the complete SPT-2 plug line\u003c\/h2\u003e\n\u003cdiv class=\"clhq-related-grid\"\u003e\n  \n  \u003ca href=\"\/products\/spt-2-male-zip-plugs\" class=\"clhq-related-card\"\u003e\n    \u003ch3\u003eFemale Gilbert Plugs SPT-2\u003c\/h3\u003e\n    \u003cp\u003eSupply-end plug for SPT-2 wire. Buy in pairs with this fefemale plug.\u003c\/p\u003e\n  \u003c\/a\u003e\n  \u003ca href=\"\/products\/female-gilbert-plugs-spt-2-without-knockout-tab\" class=\"clhq-related-card\"\u003e\n    \u003ch3\u003eFemale SPT-2 (no knockout)\u003c\/h3\u003e\n    \u003cp\u003eDedicated line-end cap. Use when you're NOT chaining downstream.\u003c\/p\u003e\n  \u003c\/a\u003e\n  \u003ca href=\"\/products\/c9-1000-socket-spools\" class=\"clhq-related-card\"\u003e\n    \u003ch3\u003eC9 SPT-2 Socket Wire\u003c\/h3\u003e\n    \u003cp\u003eMatch this plug to SPT-2 wire (0.045″ jacket).\u003c\/p\u003e\n  \u003c\/a\u003e\n  \u003ca href=\"\/collections\/plugs-connectors\" class=\"clhq-related-card\"\u003e\n    \u003ch3\u003eAll Plugs \u0026amp; Connectors\u003c\/h3\u003e\n    \u003cp\u003eSee the full slide-on plug lineup.\u003c\/p\u003e\n  \u003c\/a\u003e\n\n\u003c\/div\u003e\n","brand":"Christmas Lights HQ","offers":[{"title":"Green \/ 50\/Pack","offer_id":46772061536430,"sku":"FEMALEPLUG2-P","price":48.99,"currency_code":"USD","in_stock":false},{"title":"Green \/ 1000\/Case","offer_id":46772061569198,"sku":"FEMALEPLUG2-C","price":695.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ 50\/Pack","offer_id":46772061601966,"sku":"FEMALEPLUGBLK2-P","price":48.99,"currency_code":"USD","in_stock":false},{"title":"Black \/ 1000\/Case","offer_id":46772061634734,"sku":"FEMALEPLUGBLK2-C","price":695.0,"currency_code":"USD","in_stock":true},{"title":"White \/ 50\/Pack","offer_id":47822632878254,"sku":"FEMALEPLUGW2-P","price":48.99,"currency_code":"USD","in_stock":false},{"title":"Brown \/ 50\/Pack","offer_id":47822633468078,"sku":"FEMALEPLUGBR2-P","price":48.99,"currency_code":"USD","in_stock":false},{"title":"Brown \/ 1000\/Case","offer_id":47822633500846,"sku":"FEMALEPLUGBR2-C","price":695.0,"currency_code":"USD","in_stock":true},{"title":"White \/ 1000\/Case","offer_id":47822633959598,"sku":"FEMALEPLUGW2-C","price":695.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/6704\/2990\/files\/FemaleGreen_e68bf984-690c-4fa2-ab5c-8e08692dbe45.jpg?v=1754949674","url":"https:\/\/christmaslightshq.com\/products\/female-plugs-with-knockout-tab-spt-2","provider":"Christmas Lights HQ","version":"1.0","type":"link"}