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The Generac xp8000e - 8000 watt electric start professional portable generator (ca compliant) has been discontinued and is not available for purchase at this time.


Generac XP8000E - 8000 Watt Electric Start Professional Portable Generator (CA Compliant)

Generac Power Equipment and Accessories
Model: 5935
(Based on expert analysis, manufacturer ratings and customer reviews)
2.0 out of 52.0 out of 52.0 out of 52.0 out of 52.0 out of 5
1 Review
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(as of 06:57 CST - Details)
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  • Features
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Run Watts
Rated Watts
Surge Watts
Starting Watts
XP Series Professional Grade Portable Generator (CARB Compliant)
Engineered specifically with contractors in mind

Electric Start w/ Recoil Backup (Battery Included)
Makes starting as easy as pushing a button

410cc Generac OHVI Engine - Designed Specifically For Generators
Provides longer life and longer maintenance intervals

Pressurized Lubrication System w/ Oil Filter & Low Oil Shutdown
Provides maximum safety for longer engine life

TruePower™ Technology - Less Than 5% THD
Provides clean, smooth operation of sensitive electronics

Full Panel GFCI Protection - OSHA & NEC 2011 Compliant
Must use GFI type manual transfer switch for panel connection
Not for use with interlock kit

Large 9 Gallon Metal Fuel Tank
Provides up to 10 hours of run time @ 1/2 load

Hardened 1.25" Steel Tube Cradle & Cast Metal Corners
Combined with an integrated lifting eye for rugged durability

Fold-Down, Locking Handles w/ Never Flat Wheel Kit
Provides sturdy mobility and compact storage

Includes Battery Charger, Engine Oil & Maintenance Kit
Engine Brand
Generac OHVI
Starting System
12-Volt Button Start w/ Recoil
410 CC
Consumer Engine Warranty
3 Years
Commercial Engine Warranty
3 Years
Engine RPM
3600 RPM
Low Oil Alert/Shutdown
Cast Iron Sleeve
Product Specs
120/240 Single-Phase
60 Hertz
Auto Voltage Regulation
Surge Watts
10000 Watts
Rated Watts
8000 Watts
Fuel Type
Rated Amps
33 @ 240 Volts (Single Phase) Amps
Portability Kit
Never Flat Wheels
Tank Size
9 Gallons
Run Time @ 50% Load
10 Hours
Fuel Tank Material
Fuel Gauge
Decibel Rating @ 7m
Not Measured by Manufacturer
Idle Control
Hour Meter
Lifting Eye
Grade Type
NEMA L14-30R
Assembly Required
251 Pounds
Product Style
Portable Generator
Product Length
34.6 Inches
Product Width
29 Inches
Product Height
27.2 Inches
Consumer Warranty
3 Years
Commercial Warranty
3 Years
Download Documents


NEMA L14-30R

Need Help? Ask Our Experts.
  3 Questions
Q: Where can I get a maual that shows me a wiring diagram of the on/off/starter switch?
by Carl Schwettmann from California on August 18, 2012

A: All manuals and wiring diagrams are available via the Generac website via the following link....

Generac Manual Search

by Mike, Product Expert

Q: Does the XP gen have a L1430R receptacle for a 4 wire twist lock.
by DEN from Connecticut on February 28, 2012

A: Yes, the XP8000E (5935) does have the L1430R connection but be aware that when connecting to an electrical panel you must use a GFI type manual transfer switch due to the outlet being GFI protected.

The Reliance Controls "X" Series switches are GFI type and work with the XP model generators. Click link for available models....

Reliance GFI Manual Switches

by Mike, Product Expert

Q: Jim,
I'm a licensed NH Electrician I have a Honeywell 7500Watt Portable Generator that will be used to supply selected loads in a non-separately derived residential application as outlined by the 2011 NEC. The tag on this generator indicated that the neutral is bonded to the frame. I need to know if this generator can be made into a floating neutral generator without voiding listings or warranty. If the answer is yes then where and how does the manufacture recommend the removal of the bond? And will the manufacture send a new label that indicates the generator is now a floating neutral generator. This will be an issue with any generator that has its neutral bonded to the frame portable or stationary. Any info that you can give me will be a great help.


Ron T.

by Ron Tasker from New Hampshire on January 08, 2012

A: Many generators that have a bonded neutral to frame can be modified so the neutral is floating, or separate from the frame and generator ground. If the neutral connection (bond) to frame can be removed, if the manufacturer supports this, it’s usually the best solution as it would result in a “floating neutral” generator and would be ideal for connecting to most transfer switches.

If the generator manufacturer does not support modifying the generator to remove the bond between neutral and ground/frame, the system can be setup to meet all codes by using a neutral switching transfer switch. A “non-separately derived system” is where the generator neutral is floating, and its neutral is always interconnected with the neutral for the utility – this is the most common way backup systems are setup – including automatic backup systems.

If you need to isolate the neutral then you need to use a GFI type transfer switch such as the Reliance Controls "X" series switches.....see link for details.

GFI Transfer Switches

Note: Typically these switches are not required unless the 120/240v outlet on the generator is GFI protected which is found on Professional generators such as the Generac "XP" models and not the "XG" model.

The fact that a generator has a bonded-neutral does not rule out compatibility with 2-pole transfer switches, which make up the majority of all transfer switches. The only time that a portable generator will not function with a 2-pole transfer switch is if the generator has a bonded-neutral AND there is a GFCI breaker or GFCI mechanism protecting the receptacle being used to connect the generator to the transfer switch. Most 120/240v generator receptacles are not GFCI protected.

National Code does not require switching the neutral in general, but arguably the neutral should be switched when using a bonded generator based on how the system is setup and defined as a whole. Any time a bonded-neutral generator is connected through a transfer switch to a house wiring system, what results are two neutral-to-ground bond points: one at the main panel and one at the generator. This can be construed as having two bond points in the electrical system, even though the portable generator is not part of the system, and therefore one of the bond points should be removed (or a transfer device implemented that isolates the neutral).

Having two bond points in this scenario creates 'dual paths' on the ground and neutral between the generator and the house panel, aka "ground loop", meaning the ground wire from the generator to the house panel will share some of the return power with the neutral wire. This leads to a very small amount of voltage on the ground wire between the generator and house panel. It can be argued by an installer or authority that this power on the ground is objectionable, and a special neutral switching setup might be mandated. This is also why if there is a GFCI breaker protecting the generator receptacle, it will sense this power being lost on the neutral (to the ground) and will trip every time the generator is connected, even under No load.

* If the generator does not have a GFCI protecting the in-use receptacle, there will not be a trip and the generator will power circuits successfully. Now it’s just a question of whether having this setup is acceptable to the home owner, installer and authority if applicable.
Using bonded generators without switching the neutral has been a common application for many years, regardless of how the code is interpreted, but about 10 years ago generators started adding GFCI's (per OSHA job site requirements) and wiring them into the larger receptacles, which will limit their applications when used at homes. The 2014 code will require new generators to have built in GFCI’s, but only on the 15/20 amp 120 volt outlets, which in most cases are not being used to power a transfer switch. If we look at all of the portable generators that are bonded neutral, and then separate the models WITH a GFCI breaker protecting the 120/240 outlet, the percentage of these generators is extremely small. These are the only generators that will functionally require a 3-pole transfer switch that breaks the neutral.

Breaking the neutral with a “3-pole” (neutral switching) transfer device eliminates the ground loop (dual paths) between the generator and house panel created by having two bond points, and will eliminate the problem of the GFCI breaker tripping creating a “separately derived system” where the generator neutral is never common with the utility neutral.

I hope this information was helpful.

by Mike, Product Expert

Generac 5935 Reviews & Ratings
1 Review  Sort by 
Charles W.
Clinton, ME
Purchased from Power Equipment Direct
Purchased 4/22/15
Total Helpful Votes
10 Helpful Votes
2 out of 52 out of 52 out of 52 out of 52 out of 5
Not A Happy Purchaser
1. Ground wire not connected to motor frame

2.Motor mount bolt not installed found in bottom of box

3.Generator would not start,no electrical power.After many hours of searching found 2 of the three wires on the back of the off/on/start switch not connected.

4.The generator now runs but the idle control is not working,next step is to remove the control panel to see if the wires are connected.

THEN WHATS NEXT? Generac apparently has no effective quality control in place.
Charles Does Not Recommend This Product
Mike, the Generator Expert
Product Expert
Sorry to hear that you are having issues with the generator right out of the box. I have heard of the switch problem before and have brought it up to Generac. According to the Spec Sheet the unit should have been bonded also.

I recommend reaching out to Generac directly at 888-436-3722 to let them know how you feel about the product and also to let them know about the issues with their Quality Control. Generac would like to hear from the end user of the product when things like this occur.
Manufacturer Response
Brand Rep
We apologize for the issues that you have experienced with your portable generator. To ensure that your unit will be able to operate appropriately when needed, we would recommend having its issues diagnosed and fixed by an independent authorized service provider in your local area. These trained professionals are able to provide any applicable warranty coverage as well. The independent authorized service provider closest to you can be located online via the following link: If you have any questions about the warranty process, or if you would like to speak with us directly about your unit's issues, please do not hesitate to contact us directly at 888-GENERAC (436-3722). We apologize for any inconvenience this experience may have caused.
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