{"product_id":"pentair-amerlite-500w-120v-underwater-pool-light-with-50-cord-78458100","title":"Pentair Amerlite 500W 120V Underwater Pool Light with 50' Cord | 78458100","description":"\u003ch2 dir=\"auto\"\u003eProduct Overview\u003c\/h2\u003e\n\u003cp dir=\"auto\"\u003eThe \u003cstrong\u003ePentair Amerlite® 78458100 Underwater Pool Light\u003c\/strong\u003e is a professional-grade \u003cstrong\u003e120V, 500-watt incandescent pool light\u003c\/strong\u003e featuring a \u003cstrong\u003e50-foot factory cord\u003c\/strong\u003e, stainless-steel shell, stainless-steel face ring, and Pentair’s prismatic tempered-glass lens.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eAmerlite has long been used in residential swimming pools where dependable, high-output white underwater illumination is required. The prismatic lens is designed to help diffuse light throughout the pool, while the stainless-steel face ring uses Pentair’s \u003cstrong\u003euni-tension clamp design\u003c\/strong\u003e for secure assembly.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003ePentair currently identifies \u003cstrong\u003e78458100\u003c\/strong\u003e as the \u003cstrong\u003e500W \/ 120V Amerlite with stainless-steel face ring and 50' cord\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine \u003cstrong\u003ePentair Amerlite®\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eManufacturer Part Number: \u003cstrong\u003e78458100\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e120-volt\u003c\/strong\u003e operation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e500-watt incandescent\u003c\/strong\u003e light\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e50-foot factory cord\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eBright white underwater illumination\u003c\/li\u003e\n\u003cli\u003eStainless-steel shell\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eStainless-steel face ring\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003ePentair \u003cstrong\u003euni-tension clamp\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e8-3\/8\" prismatic tempered-glass lens\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eDesigned for superior underwater light diffusion\u003c\/li\u003e\n\u003cli\u003eLow-water cutoff design\u003c\/li\u003e\n\u003cli\u003eCompatible with select full-size Pentair, American, PacFab and Purex niches\u003c\/li\u003e\n\u003cli\u003eSuitable for residential inground swimming pools\u003c\/li\u003e\n\u003cli\u003eGenuine Pentair replacement light assembly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"auto\"\u003ePentair specifies the Amerlite family with an \u003cstrong\u003e8-3\/8\" prismatic tempered-glass lens\u003c\/strong\u003e and stainless-steel construction. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2 dir=\"auto\"\u003eSpecifications\u003c\/h2\u003e\n\u003cdiv dir=\"auto\" class=\"group TyagGW_tableContainer TyagGW_tableContainerWithTableOfContents\"\u003e\n\u003cdiv class=\"TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\"\u003e\n\u003ctable dir=\"auto\" class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth class=\"last:pe-10\"\u003eSpecification\u003c\/th\u003e\n\u003cth class=\"last:pe-10\"\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003ePentair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Line\u003c\/td\u003e\n\u003ctd\u003eAmerlite®\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e78458100\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eUnderwater Pool Light\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLight Type\u003c\/td\u003e\n\u003ctd\u003eIncandescent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLight Color\u003c\/td\u003e\n\u003ctd\u003eWhite\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e120V\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWattage\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e500W\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCord Length\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e50 ft\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFace Ring\u003c\/td\u003e\n\u003ctd\u003eStainless Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShell Material\u003c\/td\u003e\n\u003ctd\u003eStainless Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLens\u003c\/td\u003e\n\u003ctd\u003ePrismatic Tempered Glass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLens Diameter\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e8-3\/8\"\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eInground Pool\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInstallation\u003c\/td\u003e\n\u003ctd\u003eWet-Niche Underwater Light\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUPC \/ Barcode\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e788379649838\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApprox. Product Weight\u003c\/td\u003e\n\u003ctd\u003e9 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePentair Carton Weight\u003c\/td\u003e\n\u003ctd\u003eApprox. 10 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping Dimensions\u003c\/td\u003e\n\u003ctd\u003eApprox. \u003cstrong\u003e12\" × 12\" × 11\"\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp dir=\"auto\"\u003eThe 50-foot cord, 500-watt rating, 120V configuration and UPC are listed for part \u003cstrong\u003e78458100\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2 dir=\"auto\"\u003eDesigned for Full-Size Pentair Niches\u003c\/h2\u003e\n\u003cp dir=\"auto\"\u003ePentair states that Amerlite lights are UL listed for installation in compatible full-size:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003ePentair Pool Products niches\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eAmerican Products niches\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003ePacFab niches\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003ePurex niches\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"auto\"\u003eAlways verify the existing niche model, voltage and electrical configuration before purchasing a replacement underwater light. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2 dir=\"auto\"\u003eBright 500-Watt Incandescent Illumination\u003c\/h2\u003e\n\u003cp dir=\"auto\"\u003eThe \u003cstrong\u003e500-watt incandescent bulb\u003c\/strong\u003e provides the traditional bright white illumination associated with classic underwater pool lighting.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eThis model is an excellent replacement when maintaining an existing Amerlite installation where the homeowner wants to keep the original incandescent lighting system rather than convert to LED.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2 dir=\"auto\"\u003ePrismatic Tempered-Glass Lens\u003c\/h2\u003e\n\u003cp dir=\"auto\"\u003eThe Amerlite uses a \u003cstrong\u003eprismatic tempered-glass lens\u003c\/strong\u003e designed to distribute and diffuse light throughout the swimming pool.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003ePentair lists an \u003cstrong\u003e8-3\/8-inch lens\u003c\/strong\u003e on the Amerlite assembly. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2 dir=\"auto\"\u003eStainless-Steel Face Ring\u003c\/h2\u003e\n\u003cp dir=\"auto\"\u003eThe light features a stainless-steel face ring for durability in underwater applications.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eThe \u003cstrong\u003euni-tension clamp\u003c\/strong\u003e secures the face-ring and lens assembly while helping maintain proper compression around the fixture.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2 dir=\"auto\"\u003e50-Foot Cord\u003c\/h2\u003e\n\u003cp dir=\"auto\"\u003eThe \u003cstrong\u003e78458100 includes a 50-foot factory-installed cord\u003c\/strong\u003e, making it appropriate for equipment layouts where the light junction box can be reached within the supplied cord length.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003ePentair also manufactures other Amerlite configurations with longer cords, so verify the required distance before ordering. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2 dir=\"auto\"\u003eSaltwater Compatibility\u003c\/h2\u003e\n\u003cp dir=\"auto\"\u003ePentair states that its UL-listed underwater lights are certified for use in \u003cstrong\u003efresh water with salinity levels up to 6,000 ppm\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2 dir=\"auto\"\u003eImportant Electrical Information\u003c\/h2\u003e\n\u003cp dir=\"auto\"\u003eThis is a \u003cstrong\u003e120V underwater pool light\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003ePentair specifies that 120V pool and spa lights must be connected to a properly protected electrical circuit, including appropriate \u003cstrong\u003eGFCI protection\u003c\/strong\u003e. Installation should comply with applicable electrical codes and should be performed by a qualified pool professional or electrician. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch1 dir=\"auto\"\u003eFrequently Asked Questions\u003c\/h1\u003e\n\u003ch3 dir=\"auto\"\u003eWhat is Pentair 78458100?\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003e78458100\u003c\/strong\u003e is a Pentair Amerlite underwater incandescent pool light rated at \u003cstrong\u003e120V, 500W with a 50-foot cord\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003eDoes 78458100 have a stainless-steel face ring?\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eYes.\u003c\/strong\u003e This model includes the stainless-steel face ring with Pentair's uni-tension clamp.\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003eWhat color light does it produce?\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003eIt produces traditional \u003cstrong\u003ewhite incandescent pool lighting\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003eHow long is the cord?\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003e50 feet.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003eWhat voltage is it?\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003e120 volts.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003eWhat wattage is the bulb?\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003e500 watts.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003eDoes it include the complete light assembly?\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003eYes. This is the complete Amerlite underwater light fixture assembly with factory cord, stainless-steel shell, face ring, lens and incandescent lighting components.\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003eDoes it include the pool niche?\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eNo.\u003c\/strong\u003e The underwater niche is sold separately.\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003eWhat size is the Amerlite lens?\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003ePentair specifies an approximately \u003cstrong\u003e8-3\/8\" prismatic tempered-glass lens\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003eWill it replace an older Amerlite?\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003eIt is commonly used as a replacement for compatible full-size Amerlite installations, but you should verify \u003cstrong\u003evoltage, cord length and niche compatibility\u003c\/strong\u003e before ordering.\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003eCan it be used in a saltwater pool?\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003ePentair states its UL-listed underwater lights are certified for water with salinity up to \u003cstrong\u003e6,000 ppm\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003eCan I replace a 400W Amerlite with this 500W version?\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003eDo not increase fixture wattage without verifying that the existing fixture, niche and electrical system are approved for the configuration. For a direct replacement, matching the original Pentair model and electrical specifications is preferred.\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":54644597162294,"sku":"78458100","price":365.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0873\/1167\/9798\/files\/9f3d545e-60b6-46a7-af31-4a122aea7972.png?v=1790265465","url":"https:\/\/poolsupplydepot.net\/products\/pentair-amerlite-500w-120v-underwater-pool-light-with-50-cord-78458100","provider":"Pool Supply Depot","version":"1.0","type":"link"}