Which generator delivers more running wattage, the SUA12000EC / GXS12000iRD or the Protector RG027 (27kW)?

A-iPower SUA12000EC / GXS12000iRD delivers higher continuous output with 9500 running watts on gasoline.

Is the SUA12000EC / GXS12000iRD quieter than the Protector RG027 (27kW)?

Generac Protector RG027 (27kW) is quieter at 50% load, measured at 61 dBA at 23 feet.

Which model is better suited for a whole home transfer switch interlock?

A-iPower SUA12000EC / GXS12000iRD features a factory floating neutral ready for standard transfer switch hookup without modification.

ReaLoadREVIEWS

Home Backup & Portable Power Guide

ReaLoad Engineering Benchmark

A-iPower SUA12000EC / GXS12000iRD vs. Generac Protector RG027 (27kW)

Highlight Differences

Fuel Benchmark:

Elevation:

ReaLoad Technical Verdict & Engineering Dossier

Motor Surge & HVAC Starting

Generac Protector RG027 (27kW) delivers 6,250W surge, sufficient for a 3.5-Ton central A/C with soft-starter. Inverters under 7,500W surge will trip breaker overcurrent protection on direct compressor starts.

72-Hour Fuel Logistics

At 50% load over 72 hours, continuous gasoline generators consume ~56 gallons (11x 5-gallon cans). Direct utility Natural Gas hookup eliminates fuel storage degradation, winter freezing, and gas station queues.

NEC 250.20 Neutral Bonding

A-iPower has factory floating neutral, safely compliant with 3-pole transfer switches and manual panel interlocks without ground loop faults.

Natural Gas Leader

Generac Protector RG027 (27kW)

25,000 W running on NG (+17400 W lead)

Acoustic Winner

Generac Protector RG027 (27kW)

56 dBA at 23ft (-7 dBA quieter)

Easiest Home Hookup

A-iPower SUA12000EC / GXS12000iRD

Floating Neutral (Home Interlock Ready)

Best $/Running Watt

A-iPower SUA12000EC / GXS12000iRD

$0.21/W ($1,999)

Technical Specification	Enclosed Inverter A-iPower SUA12000EC / GXS12000iRD $1,999Read Review	Enclosed Inverter Generac Protector RG027 (27kW) $12,499Read Review
Running Watts Power Output	9,500 WBest	5,000 W
Peak Starting Surge Power Output	12,000 WBest	6,250 W
240V Output Amps Power Output	39.6 ABest	20.8 A
Sine Wave Purity Power Quality	<2.2% THD (Pure Sine)	<2% THD (Pure Sine)Best
Fuel Burn (25%) Fuel Consumption	0.48 GPHBest	1.80 GPH
Fuel Burn (50%) Fuel Consumption	0.78 GPHBest	3.10 GPH
Runtime (25% Load) Fuel Consumption	15.5 Hours	999 HoursBest
Fuel Tank Capacity Fuel Consumption	7.5 GallonsBest	0 Gallons
14-50R 50A Outlet Outlets & Receptacles	1x NEMA 14-50R (50A)Best	None (Use Adapter)
L14-30R 30A Outlet Outlets & Receptacles	1x NEMA L14-30R (30A)Best	None
TT-30R RV Outlet Outlets & Receptacles	NoneBest	NoneBest
5-20R Duplex Outlets Outlets & Receptacles	4x NEMA 5-20R DuplexBest	2x NEMA 5-20R Duplex
Engine Start Method Starting & Safety	Wireless Remote, Electric Key & Recoil	Electric Push-Button & Recoil Pull
Carbon Monoxide Sensor Starting & Safety	CO Watchdog / Shield Sensor (ANSI/PGMA G300)	CO Watchdog / Shield Sensor (ANSI/PGMA G300)
Noise Level (23ft) Acoustics & Physical	63 dBA	56 dBABest
Chassis Dimensions Acoustics & Physical	33.8" L × 25" W × 29" H	62.2" L × 30.6" W × 38.6" H
Dry Weight Acoustics & Physical	218 lbsBest	895 lbs
Neutral Bonding NEC 2026 Hookup	Floating Neutral (Ready for Home Interlock)	Floating Neutral (Ready for Home Interlock)
Verified Street Price Cost & Value	$1,999.00Best	$12,499.00

ReaLoad Technical Verdict Dossier

Motor Inrush Starting Surge

The A-iPower SUA12000EC / GXS12000iRD delivers 12000W peak surge compared to 6250W on the Generac Protector RG027 (27kW). Starting a 3.5-ton central air conditioner requires an electronic soft-starter to reduce compressor inrush below breaker trip thresholds.

72-Hour Outage Fuel Logistics

At 50% electrical load over a 72-hour power outage, SUA12000EC / GXS12000iRD consumes about 56 gallons while Protector RG027 (27kW) burns 223 gallons. Homeowners need 12 sealed 5-gallon gasoline cans or utility natural gas.

Home Panel Interlock Safety

A-iPower SUA12000EC / GXS12000iRD provides a factory floating neutral ready for standard 3-pole manual transfer switches. Follow NEC 250.20 safety grounding rules.

Head-to-Head Telemetry Comparison

Specification	A-iPower SUA12000EC / GXS12000iRD	Generac Protector RG027 (27kW)
Running Watts (Gasoline)	9500W	5000W
Peak Watts (Gasoline)	12000W	6250W
Operating Noise @ 23ft	66 dBA	61 dBA
Factory Neutral Status	Floating Neutral	Floating Neutral
Dry Weight	218 lbs	895 lbs
Verified Street Price	$1999	$12499