{"product_id":"led-corn-light-e39","title":"LED Corn Light E39 | 80W to 300W Retrofit for High Bays and Shoeboxes","description":"\u003ch2\u003eOne lamp family, 80W to 300W\u003c\/h2\u003e\n\u003cp\u003eA corn lamp screws into the mogul socket of a fixture you already own and replaces the metal halide or high pressure sodium lamp inside it. The housing, the pole and the wiring all stay. That is why retrofitting a site takes an afternoon and a lift rather than scaffolding and downtime.\u003c\/p\u003e\n\u003cp\u003eThe range runs from 80W to 300W, so one part family covers a low bay, a shoebox and a high mast.\u003c\/p\u003e\n\n\u003ch2\u003eMatching the wattage to what you are replacing\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eOld lamp\u003c\/th\u003e\n\u003cth\u003eTypical wattage\u003c\/th\u003e\n\u003cth\u003eCorn lamp\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMetal halide\u003c\/td\u003e\n\u003ctd\u003e175W – 250W\u003c\/td\u003e\n\u003ctd\u003e80W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMetal halide\u003c\/td\u003e\n\u003ctd\u003e250W – 400W\u003c\/td\u003e\n\u003ctd\u003e100W – 120W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMetal halide\u003c\/td\u003e\n\u003ctd\u003e400W – 750W\u003c\/td\u003e\n\u003ctd\u003e200W – 250W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMetal halide\u003c\/td\u003e\n\u003ctd\u003e750W – 1000W\u003c\/td\u003e\n\u003ctd\u003e300W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHigh pressure sodium\u003c\/td\u003e\n\u003ctd\u003e250W\u003c\/td\u003e\n\u003ctd\u003e80W – 100W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHigh pressure sodium\u003c\/td\u003e\n\u003ctd\u003e400W\u003c\/td\u003e\n\u003ctd\u003e150W – 200W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eThe ratio is not fixed because the old fixture's reflector and lens have usually lost efficiency over the years. Fit one, stand under it at night, and set the rest of the order from what you see.\u003c\/p\u003e\n\n\u003ch2\u003eSpecification\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eWattage\u003c\/td\u003e\n\u003ctd\u003e80W to 300W depending on version\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBase\u003c\/td\u003e\n\u003ctd\u003eE39 mogul\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColour temperature\u003c\/td\u003e\n\u003ctd\u003e5000K, with 5700K and 6300K options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage\u003c\/td\u003e\n\u003ctd\u003e100 to 277V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCover\u003c\/td\u003e\n\u003ctd\u003ePolycarbonate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eThe ballast has to go\u003c\/h3\u003e\n\u003cp\u003eMost corn lamps need the existing ballast removed and the lamp wired direct to the supply. A ballast built for metal halide will damage an LED lamp, and this is the step most often skipped on a rushed retrofit. It is mains wiring and belongs with a licensed electrician.\u003c\/p\u003e\n\n\u003ch3\u003eMeasure inside the housing\u003c\/h3\u003e\n\u003cp\u003eA corn lamp is longer and wider than the lamp it replaces, and the difference grows with wattage. A 300W lamp will not fit where a 100W one will. Open one fixture and measure before ordering a pallet.\u003c\/p\u003e\n\n\u003ch3\u003eEnclosed fixtures trap heat\u003c\/h3\u003e\n\u003cp\u003eCorn lamps shed heat along their fins. In a sealed shoebox or a wall pack with a shallow lens, that heat has nowhere to go and the lamp dims early. Confirm the lamp is rated for enclosed use before fitting it into one.\u003c\/p\u003e\n\n\u003ch2\u003eRelated\u003c\/h2\u003e\n\u003cp\u003eFor sideways sockets see our \u003ca href=\"\/collections\/commercial-ceiling-lights\"\u003ehorizontal corn lamp\u003c\/a\u003e. For new fixtures rather than retrofit, see \u003ca href=\"\/collections\/commercial-ceiling-lights\"\u003ehigh bays\u003c\/a\u003e and \u003ca href=\"\/collections\/outdoor-post-lights\"\u003eshoebox area lights\u003c\/a\u003e.\u003c\/p\u003e\n","brand":"Alvetto Lighting","offers":[{"title":"80W \/ 5000K","offer_id":67594938483053,"sku":"ALV-CORN-80W","price":138.0,"currency_code":"USD","in_stock":false},{"title":"100W \/ 5000K","offer_id":67594938515821,"sku":"ALV-CORN-100W-50K","price":152.0,"currency_code":"USD","in_stock":false},{"title":"100W \/ 5700K","offer_id":67594938548589,"sku":"ALV-CORN-100W-57K","price":152.0,"currency_code":"USD","in_stock":false},{"title":"120W \/ 5000K","offer_id":67594938581357,"sku":"ALV-CORN-120W","price":161.0,"currency_code":"USD","in_stock":false},{"title":"200W \/ 5000K","offer_id":67594938614125,"sku":"ALV-CORN-200W","price":285.0,"currency_code":"USD","in_stock":false},{"title":"250W \/ 5000K","offer_id":67594938646893,"sku":"ALV-CORN-250W-50K","price":313.0,"currency_code":"USD","in_stock":false},{"title":"250W \/ 6300K","offer_id":67594938679661,"sku":"ALV-CORN-250W-63K","price":313.0,"currency_code":"USD","in_stock":false},{"title":"300W \/ 5000K","offer_id":67594938712429,"sku":"ALV-CORN-300W","price":354.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1030\/5434\/4557\/files\/LEDCornLightE3980Wto300WRetrofitforHighBaysandShoeboxes.png?v=1793197949","url":"https:\/\/alvettolighting.com\/products\/led-corn-light-e39","provider":"Alvetto Lighting","version":"1.0","type":"link"}