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Running Watts product guide

Generac GP9500E Tri Fuel Portable Generator, 49-State

Home backup on natural gas through a 50A or 30A transfer switch

A 500cc tri fuel generator rated 9,500 running watts on gasoline, 8,550 on propane and 7,000 on natural gas, with a GFCI duplex, L14-30R and 14-50R outlets, electric start and COsense shutoff. It weighs 219 pounds. Natural gas use needs a contractor-installed line with a shutoff valve, and Generac's own runtime figures disagree.

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Published specifications

  • Spec sheet: 9,500 / 12,500 W gas; 8,550 / 11,250 LP; 7,000 / 9,000 NG
  • Outlets: 5-20R GFCI duplex, L14-30R, 14-50R; bonded neutral
  • Gas at 50%: 9.5 h (page) vs 8.5 h (spec sheet, manual); 7.5 gal
  • 219 lb; electric start, 12V 9Ah battery included; COsense
  • NG inlet 3.5 to 7.0 in water column; external shutoff valve needed
  • 3 yr consumer (yr 1 parts and labor); 2 yr or 1,000 h commercial

Fit and limits

Strengths

  • Runs on gasoline, propane or natural gas with published ratings for each
  • Both an L14-30R and a 14-50R with HomeLink transfer switch compatibility
  • COsense shutoff and electric start with the battery included

Caveats

  • Natural gas hookup needs a contractor, a shutoff valve and correct pressure
  • Generac's page, spec sheet and manual disagree on runtime
  • 49-state version; warranty work must go through authorized dealers

A 500cc tri fuel generator in its 49-state version

This listing's part number, G0080632, matches the variant on Generac's page for the GP9500E Tri Fuel 49ST, and the listing's selected option reads 49 State. Generac's spec sheet calls it model 8063-0 in a 49-state configuration. The UPC on Amazon differs from the one on the spec sheet, and Amazon's model number field reads G0080631, so check the carton label matches G0080632 on delivery.

It is a 500cc OHV generator with automatic voltage regulation, a 7.5-gallon gasoline tank, COsense carbon monoxide shutoff and electric start with a 12V 9Ah lead-acid battery included. The spec sheet lists engine oil, a handle and wheel kit, the battery, the manual and an LP supply hose in the box. Generac's owner's manual covers several GP Series multi-fuel models, not just this one.

Running watts drop on propane and natural gas

Generac's spec sheet gives 9,500 running and 12,500 starting watts on gasoline, 8,550 and 11,250 on propane, and 7,000 and 9,000 on natural gas. The listing title's 12,500 is the gasoline starting figure. If you plan to run on natural gas through an outage, size your loads against 7,000 running watts, about a quarter less than the gasoline number.

Runtime figures do not agree across Generac's own documents. The product page and Amazon say 9.5 hours at 50 percent load on gasoline, while the spec sheet and the manual say 8.5. On a 20-pound propane tank, the page and spec sheet say 4.5 hours and the manual says 4.75. The spec sheet adds 14 hours at 25 percent load on gasoline and 6 on propane.

Natural gas needs a proper fuel line, not just a hose

The manual says natural gas and propane fuel line connections should be made by a certified contractor familiar with local codes, that the generator needs an external manual fuel shutoff valve on the line, and that gas piping must follow NFPA 54 for natural gas. It lists required inlet pressure of 3.5 to 7.0 inches of water column for natural gas and 10 to 12 for propane.

The manual also gives natural gas consumption of 75 cubic feet per hour at half load and 101 at full load, and a pipe-sizing table for the 9.5 kW unit. The spec sheet's included list names an LP supply hose but no natural gas hose. Plan for a contractor if natural gas is the reason you are choosing a tri fuel model.

Outlets: a GFCI duplex, an L14-30R and a 14-50R

The spec sheet lists one 120V 20A 5-20R GFCI duplex, one 120/240V L14-30R twist-lock and one 120/240V 14-50R. The manual rates the L14-30R for up to 7,200 watts at 240 volts and the 14-50R for up to 9,600 watts, protected by a 40-amp breaker. Amazon's bullet says two GFCI duplex outlets, which does not match Generac's single duplex; there is no TT-30R.

Generac describes it as compatible with its HomeLink manual transfer switches, and the spec sheet lists the neutral as bonded to ground. The manual says a building connection must use a transfer switch that isolates utility power, installed by a qualified electrician, and that the National Electrical Code requires the frame to be connected to an approved earth ground.

Weight, starting, COsense and placement

Generac lists 219 pounds and 27.5 by 27.1 by 27.6 inches, and the manual labels it a two-person lift; the wheels and handle are assembled by the owner and are not intended for road towing. Starting is by an Off/Run/Start switch with the included battery or by recoil pull. An hour meter flags oil changes every 100 hours and air filter service every 200.

COsense shuts the engine off when CO builds up, only monitors while running, blinks red after a CO shutoff and yellow for a fault that must be repaired by a dealer, and is not a substitute for an indoor CO alarm. The manual says to use it only outdoors, far from windows, doors, vents and crawl spaces, with the exhaust pointed away from people and buildings.

Oil and a warranty that runs through dealers

Oil capacity is 1.06 quarts on the spec sheet and 1.16 quarts in the manual's 9.5 kW table. Check it before each use or every 8 hours. The manual's schedule says change it after the first 30 hours, then every 100 hours or every year, monthly under heavy load or heat; Amazon's bullet instead says first change at 20 hours. Valve clearance is checked after 50 hours, then every 300.

Generac's warranty starts on registration: consumer use gets three years, with parts and labor in year one and parts only in years two and three; commercial and rental use gets two years or 1,000 hours. Repairs must go through an Independent Authorized Service Dealer, proof of maintenance may be required, and starting batteries and prime power use are excluded. Amazon's warranty field says eight years, which Generac's documents do not support.

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Primary sources

  1. Generac product page for the GP9500E Tri Fuel portable generator, 49ST (variant G0080632)
  2. Generac spec sheet, GP9500ETF 49ST
  3. Generac GP Series Multi-Fuel portable generator owner's manual
  4. Generac limited 3-year warranty for portable generators

Primary sources checked .

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