Atlas Copco P3500iW Inverter Generator | 3,300W, Electric Start

Atlas Copco P3500iW Inverter Generator: When You Need Inverter-Clean Power and 240V

The Atlas Copco P3500iW answers a question most generator buyers don't realize they're asking until they've already bought the wrong machine: can I get pure-sine inverter power and a 30-amp 240-volt outlet in the same generator?

For years, the answer was no — you either picked an inverter generator (quiet, clean, but 120V only and usually under 3,000 watts) or a conventional open-frame generator (loud, 240V capable, and so-so power quality). The P3500iW is one of a small number of inverter generators that gives you both: 3,300 surge watts of clean sine power, a NEMA L14-30R twist-lock outlet for 120/240V split-phase, 12V electric start, and a sound rating of just 63 dB(A). All in a soundproof, wheeled package.

Inverter vs. Conventional: A Side-by-Side

Where the conventional P3000W wins is sheer runtime per gallon and a lower upfront cost. Where the P3500iW wins is quiet, clean, electronic-safe power that's still 240V-capable — the best of both worlds for buyers who need a one-generator solution.

What Makes the P3500iW Special

Electric key start

Twist the key and the 212 cc engine fires up — no pull-cord shoulder workout. A 12V battery is built in, with a recoil backup if the battery is dead. This is the smallest Atlas Copco inverter generator with electric start, and it makes a big difference on cold mornings or after long storage.

L14-30R 120/240V outlet

Most inverter generators stop at 120V outlets. The P3500iW adds a NEMA L14-30R twist-lock that delivers up to 30 amps of split-phase 120/240V — enough to wire into a manual transfer switch and feed your home's essential-loads panel during an outage, or to run a 240V well pump on a remote property.

Parallel operation

Need more than 3,300 watts? Pair two P3500iW units with the optional parallel kit for a combined ~6,000-watt output of pure sine power. That's enough for whole-essentials home backup or a serious construction setup — with the redundancy of two independent generators.

Variable-speed inverter technology

The 212 cc engine runs at variable rpm under digital control. The inverter rebuilds the output as a perfect 60 Hz sine wave. Less fuel burned at partial load. Less noise. Less wear on the engine. Safer power for everything you plug in.

Atlas Copco P3500iW Specifications

P3500iW Frequently Asked Questions

Can the P3500iW run a 13,500 BTU RV air conditioner?

Yes. A typical 13,500 BTU RV AC needs about 2,800 starting watts and 1,500 running watts — comfortably within the P3500iW's 3,300-watt surge and 3,000-watt continuous spec.

Can I tie it into my home's transfer switch?

Yes. The L14-30R outlet pairs with a standard 30-amp gen-cord and is compatible with most residential manual transfer switches and interlock kits. Have a licensed electrician do the wiring.

How quiet is it really at 25 feet?

63 dB(A) at 7 m (about 23 ft) is roughly the volume of a normal conversation — significantly quieter than the 73–76 dB(A) of conventional 3–8 kW open-frame generators.

Does it come with the parallel cable?

The parallel kit is sold separately. Order one if you plan to pair two units.

Add the Atlas Copco P3500iW to your cart below, or call our team for help comparing it against the conventional P3000W or the larger P6000iW inverter.