{"product_id":"female-gilbert-plugs-spt-1-with-knockout-tab","title":"Female Gilbert Plugs SPT-1 (with Knockout Tab)","description":"\u003c!-- PDP v1-merge — 2026-05-22 — female-gilbert-plugs-spt-1-with-knockout-tab merged: existing handcrafted prose + spt-2-male-zip-plugs archetype scaffolding --\u003e\n\n\u003c!-- Section 2: Quick-answer --\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 SPT-1 Female Gilbert Plug with knockout tab is the line-end connector for SPT-1 stringers. The knockout tab is removable — leave it in to cap the line, pop it out to chain a downstream stringer. Slide-on insulation-displacement contact teeth bite through the SPT-1 jacket when the cover snaps. Use when the line ends at the last bulb (tab in) or when you need to chain another stringer (tab popped).\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c!-- Section 2.5 (preserved): Why SPT-1 Female Plug (with knockout) — handcrafted prose preserved from existing PDP --\u003e\n\n\u003ch2\u003eWhy the SPT-1 Female Plug (with knockout) earns its place on the contractor truck\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eFemale Gilbert SPT-1 Zip Plugs with Knockout Tab - Best Choice for Custom Christmas Light Strings\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFor creating reliable and custom Christmas light strings or extension cords, the \u003cstrong\u003eFemale Gilbert SPT-1 Zip Plugs with Knockout Tab\u003c\/strong\u003e from Christmas Lights HQ are the ideal solution. Engineered for durability, these female zip plugs outperform others, with prongs that won't bend even in cold weather. These plugs are perfect for connecting Christmas light strands end to end or for crafting your own custom extension cords with SPT-1 zip cord wire.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features:\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDesigned for SPT-1 Wire:\u003c\/strong\u003e These female zip plugs are specifically made to pair with SPT-1 zip cord, providing a reliable connection for custom Christmas light strings and extension cords.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e2-Prong Polarized Plug:\u003c\/strong\u003e The 2-prong polarized design ensures a secure and stable electrical connection, perfect for both indoor and outdoor Christmas lighting installations.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHeavy-Duty Plastic Construction:\u003c\/strong\u003e Built with high-quality, durable plastic, these female zip plugs are made to withstand the elements, ensuring long-lasting performance in any Christmas lighting setup.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCold Weather Resilience:\u003c\/strong\u003e Unlike other zip plugs, these \u003cstrong\u003eFemale Gilbert SPT-1 Zip Plugs\u003c\/strong\u003e are engineered to resist bending and damage in cold conditions, making them ideal for outdoor use in harsh winter environments.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy Choose Female Gilbert SPT-1 Zip Plugs from Christmas Lights HQ?\u003c\/h3\u003e\n\n\u003cp\u003eAt Christmas Lights HQ, we offer the best in Christmas lighting supplies. The \u003cstrong\u003eFemale Gilbert SPT-1 Zip Plugs with Knockout Tab\u003c\/strong\u003e are a must-have for anyone creating custom holiday lighting solutions. Whether you're a professional installer or decorating your own home, these plugs ensure a seamless and durable connection for all your Christmas light displays.\u003c\/p\u003e\n\n\u003ch3\u003eUsage Tips:\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003eEasily attach these female zip plugs to SPT-1 zip cord electrical wire for custom Christmas light stringers or extension cords.\u003c\/li\u003e\n\u003cli\u003eSecure the prongs into the wire before closing the plug for a tight connection.\u003c\/li\u003e\n\u003cli\u003eSuitable for both indoor and outdoor use, making these plugs versatile for any holiday lighting project.\u003c\/li\u003e\n\u003c\/ul\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 \/ spec sheet. No marketing inflation.\u003c\/p\u003e\n\u003ctable class=\"clhq-specs-table\"\u003e\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-1 (0.030″ jacket)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eKnockout tab\u003c\/th\u003e\n\u003ctd\u003eYes (removable for chaining)\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\u003eAmperage rating\u003c\/th\u003e\n\u003ctd\u003e7 A\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\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\u003c\/table\u003e\n\n\u003c!-- Section 4: Use-case scenarios --\u003e\n\u003ch2\u003eWhen to spec the SPT-1 female plug (with knockout)\u003c\/h2\u003e\n\u003cdiv class=\"clhq-best-for-grid\"\u003e\n  \u003cdiv class=\"clhq-best-for-card\"\u003e\n    \u003ch3\u003eChainable indoor + sheltered stringers\u003c\/h3\u003e\n    \u003cp\u003eWhen the install needs flexibility — cap the line now, chain another stringer later by popping the knockout tab. Common pick for residential indoor + covered-outdoor displays that may extend.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"clhq-best-for-card\"\u003e\n    \u003ch3\u003eCustom stringer assembly with future expansion\u003c\/h3\u003e\n    \u003cp\u003eCustom-cut stringer build where you might add another segment in a future season. Knockout tab gives the option without re-doing the plug.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"clhq-best-for-card\"\u003e\n    \u003ch3\u003eMulti-circuit indoor display installs\u003c\/h3\u003e\n    \u003cp\u003eMall trees, lobby setups where multiple stringers chain end-to-end on the same circuit. Each chain point uses the knockout-popped variant.\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 spec\u003c\/dt\u003e\n  \u003cdd\u003eSPT-1 (0.030″) ONLY.\u003c\/dd\u003e\n  \u003cdt\u003ePairing plug\u003c\/dt\u003e\n  \u003cdd\u003eMale SPT-1 plug at the supply end. Optional downstream Male SPT-1 plug if chaining (after popping the knockout).\u003c\/dd\u003e\n  \u003cdt\u003eLoad\u003c\/dt\u003e\n  \u003cdd\u003eUp to 7 A; stay under 80% of circuit capacity per code.\u003c\/dd\u003e\n  \u003cdt\u003eWill NOT work with\u003c\/dt\u003e\n  \u003cdd\u003eSPT-2 wire, 240V circuits, outdoor cold-climate direct exposure.\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003c!-- Section 6: Comparison --\u003e\n\u003ch2\u003eFemale SPT-1 (with knockout) vs (no knockout)\u003c\/h2\u003e\n\u003ctable class=\"clhq-compare-table\"\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n\u003cth\u003eSpec\u003c\/th\u003e\n\u003cth\u003eWith knockout (this plug)\u003c\/th\u003e\n\u003cth\u003eNo knockout\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003cth\u003eChain downstream?\u003c\/th\u003e\n\u003ctd\u003eYes (pop the tab)\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eSealed against moisture\u003c\/th\u003e\n\u003ctd\u003eNo (tab opening)\u003c\/td\u003e\n\u003ctd\u003eYes (solid body)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003ePer-plug cost\u003c\/th\u003e\n\u003ctd\u003eHigher (knockout feature)\u003c\/td\u003e\n\u003ctd\u003eLower\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eBest for\u003c\/th\u003e\n\u003ctd\u003eChainable line-end (when needed)\u003c\/td\u003e\n\u003ctd\u003eDedicated line-end cap\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003c!-- Section 7: Install how-to --\u003e\n\u003ch2\u003eHow to install the SPT-1 female plug\u003c\/h2\u003e\n\u003col class=\"clhq-howto-steps\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCut the SPT-1 wire flush at the line end.\u003c\/strong\u003e Don't strip the jacket.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLay the wire into the plug body.\u003c\/strong\u003e Wire flat into the channel. The plug body sets the polarity to match the supply-end male plug.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSnap the cover.\u003c\/strong\u003e Press until you hear the click — IDC teeth bite the jacket.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOptional: pop the knockout tab.\u003c\/strong\u003e Only if chaining a downstream stringer NOW. Otherwise leave the tab in and the plug functions as a sealed line-end cap.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTest polarity.\u003c\/strong\u003e Outlet tester at the supply-end male plug confirms the line.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003c!-- Section 8: Build quality + materials --\u003e\n\u003ch2\u003eBuild quality + materials\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUV-stabilized polymer body\u003c\/strong\u003e — survives indoor and sheltered-outdoor environments.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsulation-displacement contact\u003c\/strong\u003e — gas-tight connection without strip-and-crimp.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRemovable knockout tab\u003c\/strong\u003e — design choice — leave in or pop out per install need.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c!-- Section 9: Warranty --\u003e\n\u003ch2\u003eWarranty\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003e1-year manufacturer warranty\u003c\/strong\u003e on SPT-1 female plugs from Christmas Lights HQ. \u003cstrong\u003eNot covered:\u003c\/strong\u003e cross-matched SPT-2 wire installs, knockout tab re-installation (it's designed to pop once), exceeding amperage rating.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"\/pages\/warranty-policies\"\u003eFull warranty terms →\u003c\/a\u003e\u003c\/p\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  \u003cdetails\u003e\u003csummary\u003eWhat is the knockout tab for?\u003c\/summary\u003e\u003cp\u003eThe knockout tab is the small plastic dimple on the 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 on SPT-2 wire?\u003c\/summary\u003e\u003cp\u003eNo. SPT-1 plugs only fit SPT-1 wire. The contact teeth are sized for SPT-1; using on SPT-2 damages the teeth and gives intermittent connections.\u003c\/p\u003e\u003c\/details\u003e\n  \u003cdetails\u003e\u003csummary\u003eWill the knockout tab let in moisture?\u003c\/summary\u003e\u003cp\u003eOnce popped, the knockout opening exposes the chain socket. For outdoor cold-climate sealed installs, use the no-knockout variant or step up to SPT-2 with-knockout. For indoor and sheltered installs, the knockout-popped plug performs fine across the season.\u003c\/p\u003e\u003c\/details\u003e\n  \u003cdetails\u003e\u003csummary\u003eHow many stringers can I chain end-to-end?\u003c\/summary\u003e\u003cp\u003ePer code, stay under 80% of circuit capacity. On a 15A circuit you can chain stringers up to ~840W total load. Most contractors split chains at 500-800 bulbs per supply point for serviceability and circuit-protection headroom.\u003c\/p\u003e\u003c\/details\u003e\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=\"8807929413806\"\u003e\n  \u003c!-- Judge.me widget renders here via the theme\u0026rsquo;s snippets\/judgeme_widgets.liquid render-tag --\u003e\n\u003c\/div\u003e\n\n\u003c!-- Section 13: Related --\u003e\n\u003ch2\u003eBuild the complete SPT-1 chainable line\u003c\/h2\u003e\n\u003cdiv class=\"clhq-related-grid\"\u003e\n  \u003ca href=\"\/products\/male-gilbert-plugs-spt-1\" class=\"clhq-related-card\"\u003e\n    \u003ch3\u003eMale SPT-1 Plugs\u003c\/h3\u003e\n    \u003cp\u003eSupply-end pair for this female plug.\u003c\/p\u003e\n  \u003c\/a\u003e\n  \u003ca href=\"\/products\/spt1-lamp-cord-extension-wire-bulk-spool\" class=\"clhq-related-card\"\u003e\n    \u003ch3\u003eSPT-1 Lamp Cord Extension Wire\u003c\/h3\u003e\n    \u003cp\u003eBulk SPT-1 wire that matches this plug.\u003c\/p\u003e\n  \u003c\/a\u003e\n  \u003ca href=\"\/products\/female-plugs-with-knockout-tab-spt-2\" class=\"clhq-related-card\"\u003e\n    \u003ch3\u003eFemale SPT-2 with Knockout\u003c\/h3\u003e\n    \u003cp\u003eOutdoor cold-climate spec version.\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\u003eBrowse the full plug lineup.\u003c\/p\u003e\n  \u003c\/a\u003e\n\u003c\/div\u003e\n","brand":"Christmas Lights HQ","offers":[{"title":"Green \/ 50\/Pack","offer_id":46772072480942,"sku":"FEMALEPLUG1-P","price":48.99,"currency_code":"USD","in_stock":true},{"title":"Green \/ 1000\/Case","offer_id":46772072513710,"sku":"FEMALEPLUG-C","price":695.0,"currency_code":"USD","in_stock":true},{"title":"White \/ 50\/Pack","offer_id":46772072546478,"sku":"FEMALEPLUGW1-P","price":48.99,"currency_code":"USD","in_stock":false},{"title":"White \/ 1000\/Case","offer_id":46772072579246,"sku":"FEMALEPLUGW1-C","price":695.0,"currency_code":"USD","in_stock":true},{"title":"Brown \/ 50\/Pack","offer_id":46772072612014,"sku":"FEMALEPLUGBRN1-P","price":48.99,"currency_code":"USD","in_stock":false},{"title":"Brown \/ 1000\/Case","offer_id":46772072644782,"sku":"FEMALEPLUGBRN1-C","price":695.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ 50\/Pack","offer_id":46772072677550,"sku":"FEMALEPLUGBLK1-P","price":48.99,"currency_code":"USD","in_stock":false},{"title":"Black \/ 1000\/Case","offer_id":46772072710318,"sku":"FEMALEPLUGBLK1-C","price":695.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/6704\/2990\/files\/FemaleGilPlug-Photoroom.jpg?v=1754949610","url":"https:\/\/christmaslightshq.com\/products\/female-gilbert-plugs-spt-1-with-knockout-tab","provider":"Christmas Lights HQ","version":"1.0","type":"link"}