{"product_id":"amerisun-4500w-open-frame-inverter-generator-3800-running","title":"AMERISUN 4500W Open Frame Inverter Generator, 3800 Running Watts, Portable Gas Generator","description":"\u003cdiv class=\"product-description-rich\"\u003e\n\u003cdiv style=\"background:#1a1a1a;border-left:4px solid #ff9800;padding:14px 18px;margin:0 0 14px 0;color:#f5e6d3;\"\u003e\n\u003cstrong style=\"color:#ffb74d;\"\u003eAmazon customer rating: 4.4 \/ 5\u003c\/strong\u003e - WC Safety review of the AMERISUN 4500W Open Frame Inverter Generator, 3800 Running Watts, Portable Gas Generator.\u003cbr\u003e\n\u003cspan style=\"font-size:0.9em;\"\u003eWritten by Steven Eaton, WC Safety Editorial, from the published AMERISUN listing. The score above is the live Amazon customer rating captured at review time - not a WC Safety test result. We did not laboratory-test this product.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp\u003eThe AMERISUN 4500W Open Frame Inverter Generator, 3800 Running Watts, Portable Gas Generator is one of our picks for the \u003ca href=\"\/collections\/jobsite-generators\"\u003eCO-shutoff generator\u003c\/a\u003e lineup. Everything below comes straight from the manufacturer's published listing - specs, capacities, and dimensions are theirs, not ours.\u003c\/p\u003e\n\u003cp\u003eEvery generator in this collection has one non-negotiable feature: a built-in carbon monoxide sensor that shuts the engine down when CO accumulates - the technology (CO Sensor, CO Shield, CO Watchdog and similar, named per listing) that the CPSC credits with preventing generator CO deaths. It does not make indoor use safe: generators run outdoors, 20+ feet from openings, exhaust pointed away, with working \u003ca href=\"\/collections\/carbon-monoxide-alarms-detectors\"\u003eCO alarms\u003c\/a\u003e in the building. See \u003ca href=\"\/blogs\/how-to-guide\/how-to-run-a-generator-safely\"\u003ehow to run a generator safely\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eKey details, quoted from the manufacturer's published listing:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRELIABLE 4500W POWER OUTPUT – Delivers 4500 peak watts and 3800 running watts to power refrigerators, freezers, sump pumps, power tools, RV appliances, and other essentials. Ideal for home backup, camping, tailgating, jobsites, and emergency power outages.\u003c\/li\u003e\n\u003cli\u003eBUILT-IN CO ALERT FOR ENHANCED SAFETY – Integrated carbon monoxide detection continuously monitors CO levels and automatically shuts down the generator when unsafe concentrations are detected, providing added protection for your family during indoor-adjacent outdoor operation and emergency use.\u003c\/li\u003e\n\u003cli\u003ePARALLEL READY FOR MORE POWER – Connect two compatible inverter generators with an optional parallel kit (sold separately) to increase available output for larger RV systems, multiple household appliances, construction equipment, or expanded backup power.\u003c\/li\u003e\n\u003cli\u003eECO MODE FOR LONGER RUNTIME – Smart Eco Mode automatically adjusts engine speed based on power demand, reducing fuel consumption, minimizing engine wear, and extending runtime up to 6.5 hours at 50% load for efficient operation.\u003c\/li\u003e\n\u003cli\u003eRV READY \u0026amp; EASY TO TRANSPORT – Features a 120V 30A TT-30R RV outlet, household outlets, 12V DC output, and a VFT digital display showing voltage, frequency, and runtime. The lightweight 68 lb open-frame design makes it easy to carry for camping, RV travel, job sites, and emergency preparedness.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCompare all \u003ca href=\"\/collections\/jobsite-generators\"\u003eCO-shutoff generators\u003c\/a\u003e, run power through rated \u003ca href=\"\/collections\/extension-cords-reels\"\u003eheavy-gauge cords\u003c\/a\u003e, and browse all \u003ca href=\"\/collections\/jobsite-equipment\"\u003ejobsite equipment\u003c\/a\u003e.\u003c\/p\u003e\n\u003cdiv class=\"wcs-buyer-guidance\"\u003e\n\u003ch2\u003eWhat to check before you buy\u003c\/h2\u003e\n\u003cdl\u003e\n\u003cdt\u003e\u003cstrong\u003eCarbon monoxide is the headline hazard\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eA portable generator produces CO in quantities that can be fatal indoors within minutes. It runs outdoors only, well away from doors, windows and vents - never in a garage, basement or crawlspace, even with the door open.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eRunning versus starting watts\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eStarting (surge) watts cover the momentary draw of motors; running watts cover continuous load. Sizing to the running figure alone leaves you short the moment a compressor or pump kicks in.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eTransfer switch for any building connection\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eConnecting a generator to building wiring without a properly installed transfer switch can backfeed the utility line and endanger line workers. That connection is electrician territory.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eGFCI and cord condition\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eWet or outdoor use needs GFCI protection and outdoor-rated cords sized for the load and the run length.\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003ch2\u003eHow it compares to other portable generators we review\u003c\/h2\u003e\n\u003cdiv style=\"overflow-x:auto;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:8px 10px;\"\u003eProduct\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:8px 10px;\"\u003eList price\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 10px;\"\u003e\n\u003cstrong\u003eAMERISUN 4500W Open Frame Inverter Generator, 3800 Running Watts, Portable Gas Generator\u003c\/strong\u003e (this page)\u003c\/td\u003e\n\u003ctd style=\"padding:7px 10px;\"\u003e$256.19\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 10px;\"\u003e\u003ca href=\"\/products\/westinghouse-6500-watt-dual-fuel-home-backup-portable\"\u003eWestinghouse 6500 Watt Dual Fuel Home Backup Portable Generator, Transfer Switch Ready\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:7px 10px;\"\u003e$579.00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 10px;\"\u003e\u003ca href=\"\/products\/westinghouse-4650-peak-watt-portable-generator-rv-ready-30a\"\u003eWestinghouse 4650 Peak Watt Portable Generator, RV Ready 30A Outlet, Gas Powered, CO\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:7px 10px;\"\u003e$349.00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 10px;\"\u003e\u003ca href=\"\/products\/westinghouse-12500-peak-watt-dual-fuel-home-backup-portable\"\u003eWestinghouse 12500 Peak Watt Dual Fuel Home Backup Portable Generator, Remote Electric\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:7px 10px;\"\u003e$1049.00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 10px;\"\u003e\u003ca href=\"\/products\/westinghouse-12000-peak-watt-dual-fuel-portable-inverter\"\u003eWestinghouse 12000 Peak Watt Dual Fuel Portable Inverter Generator, Remote Electric\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:7px 10px;\"\u003e$1899.00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 10px;\"\u003e\u003ca href=\"\/products\/westinghouse-2550-peak-watt-super-quiet-portable-inverter\"\u003eWestinghouse 2550 Peak Watt Super Quiet Portable Inverter Generator, RV Ready 30A, CO\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:7px 10px;\"\u003e$434.65\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 10px;\"\u003e\u003ca href=\"\/products\/wen-4500-watt-inverter-generator-rv-ready-quiet-portable\"\u003eWEN 4500-Watt Inverter Generator, RV-Ready, Quiet, Portable and Lightweight with Fuel\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:7px 10px;\"\u003e$559.48\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cp\u003eList prices recorded when this page was last updated; Amazon pricing moves frequently, so check the live listing. Browse the full \u003ca href=\"\/collections\/jobsite-generators\"\u003eportable generators\u003c\/a\u003e range, or see all \u003ca href=\"\/collections\/jobsite-equipment\"\u003ejobsite equipment\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2 id=\"faq\"\u003eFrequently asked questions\u003c\/h2\u003e\n\u003ch3\u003eHow far from the house should a generator be placed?\u003c\/h3\u003e\n\u003cp\u003eGuidance from the CPSC is to run it outdoors and at least 20 feet from the building, with the exhaust directed away from doors, windows and vents. Distance alone does not help if exhaust can drift back inside.\u003c\/p\u003e\n\u003ch3\u003eCan I run a generator in the garage with the door open?\u003c\/h3\u003e\n\u003cp\u003eNo. An open door does not clear CO from an attached structure, and this scenario appears repeatedly in fatal poisoning investigations. Outdoors and away from the building is the only safe placement.\u003c\/p\u003e\n\u003ch3\u003eWhat size generator do I need?\u003c\/h3\u003e\n\u003cp\u003eAdd the running watts of everything that will run at once, then add the single largest starting surge on top. Motor-driven equipment such as compressors, pumps and refrigeration drives the surge figure.\u003c\/p\u003e\n\u003ch3\u003eDo I need a CO alarm if I own a generator?\u003c\/h3\u003e\n\u003cp\u003eA working CO alarm inside the building is a sensible backstop, and newer portable generators may include a CO shutoff feature. Neither replaces correct outdoor placement.\u003c\/p\u003e\n\u003ch3\u003eCan I plug a generator into a wall outlet?\u003c\/h3\u003e\n\u003cp\u003eNo. Backfeeding through an outlet energizes the utility line and can kill line workers, as well as bypassing overcurrent protection. Use a transfer switch installed by a qualified electrician.\u003c\/p\u003e\n\u003ch3\u003eWhere do the specifications on this page come from?\u003c\/h3\u003e\n\u003cp\u003eThey are taken from the manufacturer's published listing. WC Safety does not laboratory-test products, and nothing is claimed here that the manufacturer does not state.\u003c\/p\u003e\n\u003ch3\u003eDoes WC Safety sell this product?\u003c\/h3\u003e\n\u003cp\u003eNo. WC Safety is an independent review site and an Amazon Associate. Purchases happen on Amazon, and we earn a commission on qualifying purchases at no extra cost to you.\u003c\/p\u003e\n\u003ch3\u003eHow was the rating on this page determined?\u003c\/h3\u003e\n\u003cp\u003eThe score shown is the live Amazon customer rating captured at the time of review. It reflects buyer feedback, not a WC Safety test result.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"wcs-related-mesh\"\u003e\n\u003ch2\u003eMore from our Generator reviews\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/wen-14500-watt-120v-240v-tri-fuel-generator-for-gas-propane\"\u003eWEN 14500-Watt 120V 240V Tri-Fuel Generator for Gas, Propane and Natural Gas\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"AMERISUN","offers":[{"title":"Default Title","offer_id":44465348247640,"sku":null,"price":256.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0594\/1900\/0920\/files\/81WIh8ifECL.jpg?v=1785103006","url":"https:\/\/wcsafety.com\/products\/amerisun-4500w-open-frame-inverter-generator-3800-running","provider":"WC Safety","version":"1.0","type":"link"}