Answer
Can the Generac GP3500iO run ResMed AirSense 11, typical power from the user guide?
Runs
Runs. Running draw 56 W fits within 3,000 running watts, and published startup 73 W fits within 3,500 starting watts.
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The comparison
| Generac GP3500iO | ResMed AirSense 11, typical power from the user guide | |
|---|---|---|
| Running watts | 3,000 W | 56 W |
| Starting / surge watts | 3,500 W | 73 W |
| Type | inverter, Gasoline | Medical |
| Published runtime | 11 hr at 25% load, 8 hr at 50% load | |
| Sources | Generator source | Appliance source |
Questions
Can the Generac GP3500iO run ResMed AirSense 11, typical power from the user guide?
Runs. Running draw 56 W fits within 3,000 running watts, and published startup 73 W fits within 3,500 starting watts.
What watts were compared?
Generator: 3,000 running W and 3,500 starting W on gasoline. Appliance: 56 W running, 73 W startup.
How long will it run?
Fuel runtime depends on total load. Published runtime: 11 hr at 25% load, 8 hr at 50% load.
Where did the numbers come from?
Generac spec sheet (7128): 3000 W running, 3500 W starting; L5-30R with 30A breaker; 2.37 gal; 11 hr at 25%, 8 hr at 50%. Americas user guide, 65 W power supply section: typical power consumption 56.1 W (111.5 VA) and peak power consumption 73.2 W (137.6 VA). This is the published system figure, not the lower no-humidifier row on ResMed's separate therapy-power sheet.
Safety first
- Run a generator outdoors only, at least 20 feet from the house, with the exhaust pointed away from doors, windows and vents. Never in a garage, basement, shed or crawlspace, even with the door open.
- Carbon monoxide is odorless and can kill in minutes. Keep battery CO alarms working inside the home.
- Never backfeed a house by plugging a generator into a wall outlet or dryer receptacle. It can energize utility lines and kill a lineworker or a neighbor.
- Connecting to home wiring requires a transfer switch or a listed breaker interlock with a power inlet box, installed by a licensed electrician and permitted where your jurisdiction requires it.