The Champion Power Equipment 100416 8000 W tri-fuel portable natural gas ready generator with CO Shield® is a reliable source of power with the flexibility you need. When you are not running your generator on natural gas, you also have the option of operating it on gasoline or propane. The ability to operate your generator on three types of fuel out of the box makes this one of the most versatile generators on the market. The fuel select dial allows you to safely select gasoline, propane (LPG) or natural gas (NG) as your fuel source, plus a propane/natural gas selector is located on the side panel. Using natural gas, the engine produces 8750 starting watts and 7000 running watts. A 6 ft propane hose with a built-in regulator is included. To connect this generator to your home's natural gas source, this generator includes a 25 ft NG hose kit, which includes a female quick-connect end, a female flare fitting end and an NPT male adapter. Using gasoline, the 459 cc Champion engine produces 10000 starting watts and 8000 running watts and will run for 12.5 hr at 50% load when the 8.5 gal fuel tank is full. When using a 20 lb propane tank, it produces 9000 starting watts and 7200 running watts and will run for 5 hr at 50% load. The electric start includes a battery, plus cold start technology ensures quick cold weather starts. With a 1.2 qt oil capacity, this unit has a low oil shut-off sensor and includes engine oil all you need is fuel. Easily monitor power output and track maintenance intervals with Intelligauge, which allows you to keep track of voltage, frequency, session runtime and total runtime to easily monitor output and track maintenance intervals. This generator has a noise level of 74 dBA from 23 ft, which is a bit louder than a vacuum. The covered outlets include a 120 V 30 A locking outlet (L5-30R), a 120/240 V 30 A locking outlet (L14-30R) and four 120 V 20 A GFCI protected household outlets (5-20R). CO Shield® technology monitors the accumulation of carbon monoxide (CO), a poisonous gas produced by engine exhaust when the generator is running. If CO Shield® detects unsafe elevated levels of CO gas, it automatically shuts off the engine. CO Shield® is not a substitute for an indoor carbon monoxide alarm or for safe operation. Do not allow engine exhaust fumes to enter a confined area through windows, doors, vents or other openings. Generators must always be used outdoors, far away from occupied buildings with engine exhaust pointed away from people and buildings. Meets the requirements of ANSI/PGMA G300-2018.