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Yamaha EF6300iSDE Inverter Generator

Availability: Out of stock

$3,689.10 Add to Cart to See Price.

The all-new EF6300iSDE is the most powerful, most advanced Yamaha portable generator ever. It quietly cranks out up to 6300 watts/52.5amps of pure sine wave inverter power at 120 or 240 volts at only 58-64 dBA. The ultimate in home standby power, run high demand equipment like well pumps as well as sensitive equipment like flat panel TVs and computers. Features an electric start with an optional wireless remote starting system.


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6,300 watts/52.5 amps @ 120 volts 120/240 volt. Yamaha's most Powerful Inverter Generator.

  • • Noise Block Technology features a decibel rating of 58 ~ 64 dBA.
  • • Pure Sine Wave (Pulse Width Modulation) Inverter System allows you to run your most sensitive electronics.
  • • Smart Throttle adjusts engine speed depending on the load.
  • • Electric Start Standard. Battery Included.
  • • Automatic Choke
  • • Optional Wireless Remote Start
  • • Low Oil Shutdown
  • • Fuel Level Gauge
  • • 120V and 240V operation
  • • Power Meter
  • • Hour Meter 
  • • Built-in wheel kit for easier portability.
  • • Twin Bar - Aid lift, transport and provide security point.
  • • 50 State Compliant - Meets CARB emission regulations.


Additional Info

Manufacturer Part Number EF6300ISDE
Engine Type OHV, Air-Cooled, Four-Stroke, Single Cylinder
Engine Displacement 357 cc
Starting System Electric Start
Ignition System n/a
Oil Capacity 1.37 qt
Fuel Tank Capacity 4.5 gal.
Continuous Operation Time 13.3 hours at 1/4 Rated Load
Maximum AC Output 6300 watts
Rated AC Output 5500 watts
DC Output n/a
Rated AC Current 45.8 amps /52.5 amps @120V; 22.9 amps/26.3 amps @ 240V
Parallel Capable No
Rated Voltage 120V / 240V
Frequency 60 hz
Receptacles GFCI: 120V Duplex, 30amp120V Twist, 30A 120/240V Twist
Noise Level 58 ~ 64 dBA
Dry Weight 200
Overall Dimensions 30.7 in X 24.3 in X 27.2 in
Residential Warranty 3 years
Commercial Warranty 1 Year
Emissions Compliance 50 State Compliant
Ships Via Freight


Great quality generatorReview by Fitz
Starts up, runs quiet, no issues. My only concern is that there is no "pull start" in case the battery fails, although I have not run into this issue yet.
Good experience with Wise sales. Road Runner trucking did a nice job delivering.
Hapy with purchase. Thanks! (Posted on 10/14/13)
Great generator, just expensive.Review by Vlow
Well made & quiet. I do wish it had a recoil in addition to battery as back up. Price is just expensive, but I decided to pay for the quality and lack of noise. I do not think you can go wrong with a Yamaha. (Posted on 10/14/13)
I am power hungryReview by phase2000
Love this generator all the power my 5th wheel needs for state and county parks that are off the grid. Moved up from the EF3000iSEB I Used for 5yrs even a home blackout for 10 hours. Now I am even more prepared for anything. Nothing like Yama-quiet!
(Posted on 6/9/13)
the Best:Review by Allen
recivied mine 2 years ago ;wisesales gave me very fast delevery ; I belive the best generator on the market today: (Posted on 4/29/13)
Good machineReview by Mando
As of this moment, I have only unpacked and run the generator for 30 minutes or so.
But it's a Yamaha...I have a 3000 and it's a gem.
Dealing with Wise was excellent. (Posted on 3/27/13)
Wow! A must have generatorReview by ETHIEL
I ordered this generator few days ago. The shipping was fast and free. Thank you Wise Sales, you have earned my business. The generator is very quiet and powerful. I was amazed on how quiet it is. I was a foot away from the generator talking to my wife and we did not have to scream. I recommend this product to all of you. (Posted on 7/7/12)

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Shipping Information


Shipping Information

Below is a basic overview of our typical Shipping and Delivery Policies. Please note for "Free Shipping" it is our intention to get your purchase to you as quickly as is financially feasible.

Shipment Transit Times: We are located in Schaumburg, IL and ship most products from our warehouse. Transit Times vary based on the size of product purchased and the distance from our warehouse. Here is a color coded chart with our approximate transit times.

Processing Times: Products that ship via Ground are typically processed by the next business day. Freight items are given 1 business day lead time. These standards are subject to item availability and shipping method chosen at checkout.

Expedited Shipping: products under 150 lbs (ship weight) may be expedited by selecting an expedited shipping method in checkout and paying an extra fee. Freight items cannot be expedited via our website checkout. For expedited freight orders, please call (800) 916-9473 to get a freight quote. Expedited shipping may not be available in all areas.

Typical delivery times per carrier:

  • UPS: 1-5 business days within the contiguous United States. Upgrades available for 3 Day , 2 Day and Next Day Air; see checkout for prices.

If you have any questions related to our shipping policies or need a special quote, please call our Shipping Department at (800) 916-9473.

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