Which generator delivers more running wattage, the GP9200E (7687) or the GN875i?

Generac GP9200E (7687) delivers higher continuous output with 9200 running watts on gasoline.

Is the GP9200E (7687) quieter than the GN875i?

WEN GN875i is quieter at 50% load, measured at 72 dBA at 23 feet.

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

WEN GN875i features a factory floating neutral ready for standard transfer switch hookup without modification.

ReaLoadREVIEWS

Home Backup & Portable Power Guide

ReaLoad Engineering Benchmark

Generac GP9200E (7687) vs. WEN GN875i

Highlight Differences

Fuel Benchmark:

Elevation:

ReaLoad Technical Verdict & Engineering Dossier

Motor Surge & HVAC Starting

Generac GP9200E (7687) delivers 11,500W 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

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

Natural Gas Leader

Generac GP9200E (7687)

7,360 W running on NG (+7360 W lead)

Acoustic Winner

WEN GN875i

69 dBA at 23ft (-3.5 dBA quieter)

Easiest Home Hookup

WEN GN875i

Floating Neutral (Home Interlock Ready)

Best $/Running Watt

WEN GN875i

$0.12/W ($849)

Technical Specification	Open-Frame Inverter Generac GP9200E (7687) $1,199Read Review	Open-Frame Inverter WEN GN875i $849Read Review
Running Watts Power Output	9,200 WBest	7,000 W
Peak Starting Surge Power Output	11,500 WBest	8,750 W
240V Output Amps Power Output	38.3 ABest	29.2 A
Sine Wave Purity Power Quality	<2.9% THD (Pure Sine)	<2.5% THD (Pure Sine)Best
Fuel Burn (25%) Fuel Consumption	0.53 GPH	0.44 GPHBest
Fuel Burn (50%) Fuel Consumption	0.85 GPH	0.82 GPHBest
Runtime (25% Load) Fuel Consumption	15 HoursBest	13 Hours
Fuel Tank Capacity Fuel Consumption	7.9 GallonsBest	4.2 Gallons
14-50R 50A Outlet Outlets & Receptacles	1x NEMA 14-50R (50A)Best	1x NEMA 14-50R (50A)Best
L14-30R 30A Outlet Outlets & Receptacles	1x NEMA L14-30R (30A)Best	1x NEMA L14-30R (30A)Best
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	72.5 dBA	69 dBABest
Chassis Dimensions Acoustics & Physical	27.2" L × 27" W × 26.5" H	25.6" L × 24.8" W × 23.2" H
Dry Weight Acoustics & Physical	211 lbs	145 lbsBest
Neutral Bonding NEC 2026 Hookup	Bonded Neutral (Unbonding Required for Home ATS)	Floating Neutral (Ready for Home Interlock)
Verified Street Price Cost & Value	$1,199.00	$849.00Best

ReaLoad Technical Verdict Dossier

Motor Inrush Starting Surge

The Generac GP9200E (7687) delivers 11500W peak surge compared to 8750W on the WEN GN875i. 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, GP9200E (7687) consumes about 61 gallons while GN875i burns 59 gallons. Homeowners need 13 sealed 5-gallon gasoline cans or utility natural gas.

Home Panel Interlock Safety

Generac GP9200E (7687) features a bonded neutral, requiring ground jumper removal before connecting to home breaker panels. Follow NEC 250.20 safety grounding rules.

Head-to-Head Telemetry Comparison

Specification	Generac GP9200E (7687)	WEN GN875i
Running Watts (Gasoline)	9200W	7000W
Peak Watts (Gasoline)	11500W	8750W
Operating Noise @ 23ft	75.5 dBA	72 dBA
Factory Neutral Status	Bonded Neutral	Floating Neutral
Dry Weight	211 lbs	145 lbs
Verified Street Price	$1199	$849