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Most Recent Questions
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my home is ALL electric what size generator should i get
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Will a RTSD200A3 transfer switch work with a new Generac generator?
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What oil comes in the 6551?
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Water cooled versus air cooled?
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How do I run test to ensure additional lights are powered by 20Kw generac generator during power outages?
Questions with Most Recent Answers
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Will a RTSD200A3 transfer switch work with a new Generac generator?
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What oil comes in the 6551?
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Water cooled versus air cooled?
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Transfer back to utility power source
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How do I run test to ensure additional lights are powered by 20Kw generac generator during power outages?

Customer questions and answers for
Generac Power Systems 20kW-6730

Customer questions and answers:
433 Questions
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476 Answers
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Customer questions and answers for Generac Power Systems 20kW-6730

Question

How do I turn off at night and back on in morning to preserve fuel?

I have a 20kw Guardian with an automatic transfer switch and would like to turn the unit off at night to save fuel. How do I do this?
State: CT - Connecticut
Age: 45-54
This product will backup: Entire Home
asked 3 years ago
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Kevin
Reding
on 20kW-6730
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answer 1
1. Turn the generator breaker off.
2. Switch the main electrical panel breaker to off.
3. Switch the three position switch to off.
4. Remove the fuse on the control panel. To put the generator back into service, simply follow the process in reverse.
State: WI - Wisconsin
answered 3 years ago
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Generac
Waukesha
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Question

Where is the serial number located on a Guardian 8 kW and 20kW?

I cannot find the metal data place anywhere. On the 8kW there is no data plate on the outside or inside. Help!
State: NY - New York
Age: 55-64
This product will backup: Entire Home
 
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asked 3 years ago
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Goldfish
Delmar
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answer 1
The data label is located inside of the generator near the control panel. For a diagram on where it's located on the 8kW and 20kW, please refer to page 6 on the owner's manual. This manual is shared between the 8kw - 20kW.

Manuals can be found on http://www.generac.com/Service/Manu... by entering in your seven-digit model number. Be sure to enter in your model number starting with two or three zeros without any dashes or spaces. For the 8kW, Model 5870-0 should be entered as 0058700.
State: WI - Wisconsin
answered 3 years ago
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Generac
Waukesha
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Question

Is this the largest wattage that produces pure sine waves?

Is this the largest wattage that produces pure sine waves that runs on LP? After searching the other models by for the TruePower feature, this was the largest one I could find.
State: ME - Maine
This product will backup: Entire Home
asked 3 years ago
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Josh
Maine
on 20kW-6730
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answer 1
For air cooled automatic standby generators, the 20kW is the largest unit that features True Power Technology, which equals less than 5% total harmonic distortion.
State: WI - Wisconsin
answered 3 years ago
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Generac
Waukesha
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Question

Wiring

In the installation guidelines in order to maintain seperation of circuits dc control wires must be seperated from the ac control wires with the fiberglass sleeve. Now do we also have to run the ac wires in one conduit and the dc in another ? or can we run both once it exits the generator
State: MI - Michigan
Age: 45-54
This product will backup: Entire Home
asked 3 years ago
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John
Michigan
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answer 1
Please consult with the local authority, as it may be required based on local code.

This is not an issue on the pre-wired EZ Switches, since it is factory installed wiring.
State: WI - Wisconsin
answered 3 years ago
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by
Generac
Waukesha
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Question

I have three 200 amp breaker panels but my overall consumption can be handled by a 20kw generator. What transfer switch(es) will I need?

asked 2 years, 11 months ago
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wayne
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answer 1
Consult with authorized Generac Dealer for specific requirements. To find a dealer near you, use our dealer locator at: http://www.generac.com/Service/Deal...
State: WI - Wisconsin
answered 2 years, 11 months ago
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by
Generac
Waukesha
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Question

20kw Generators

What is the difference between the generac 20KW generators model centurion 5896 and the guardian model 5875?
asked 2 years, 11 months ago
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by
generator ?
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answer 1
The only difference between these models is the brand. The Centurion brand is manufactured exclusively for Lowes stores. Both are packaged with the same transfer switch and have the same product features.
answered 2 years, 11 months ago
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GeneracPowerSystems
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Question

Noise reduction

Although the generator meets town's setbacks, my neighbor is complaining. Can anything be done to attenuate the noise?
State: NY - New York
Age: 45-54
This product will backup: Entire Home
asked 2 years, 11 months ago
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Ray
Bronxville
on 20kW-6730
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answer 1
Generac designs our standby generators with sound attenuated panels and an aluminum enclosure to minimize noise whenever possible. You can also set the day and time of the weekly exercise cycle. We do not offer other accessories to allow for quieter operation.
State: WI - Wisconsin
answered 2 years, 11 months ago
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Generac
Waukesha
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Question

Main Line Circuit Breaker

It is good to have protection for the generator, but it seems counter-intuitive to have the generator shut itself off if there is too much demand. This would be especially important if I am out of town and not in a position to turn off circuits and flip the switch to get the generator back on line.

I plan on getting a 20kW unit installed, which seems to be sized correctly for my house - and we would conserve power if in use. I would also shut down unessential circuits if going out of town. However, does the generator have the ability to restrict certain circuits so the demand does not overload the generator? Is there any control in the base model without accessories that provides this type of control?
State: RI - Rhode Island
Age: 45-54
This product will backup: Entire Home
asked 2 years, 11 months ago
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Dave
on 20kW-6730
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answer 1
With Generac's Nexus Smart Switch, you can manage two 24V HVAC loads without any additional components. This will keep the generator from overloading. If you have other high-demand loads that could potentially overload the generator, you can add up to six additional digital load management (DLM) modules.
answered 2 years, 11 months ago
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GeneracPowerSystems
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Question

what is the input BTU for natural gas?

State: MA - Massachusetts
Age: Over 65
This product will backup: Entire Home
asked 2 years, 11 months ago
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sunshine
cape cod
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answer 1
294,000 BTU/hr is what would be needed to ensure a proper fuel supply at full load.
answered 2 years, 11 months ago
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GeneracPowerSystems
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Question

For LP hook-up, should the main line from the propane tank to the regulator be 3/4 inch pipe, or is 1/2 inch pipe sufficient?

Underground 250-gal propane tank is located 40 from where regulator enters house. Guardian 20kw to be installed near that regulator. Existing 40 ft buried main line from tank to regulator is 1/2 inch pipe. Is this sufficient to feed house and new generator, or should 1/2 pipe be replaced with a 3/4 inch pipe?
State: CT - Connecticut
This product will backup: Entire Home
asked 2 years, 11 months ago
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Greta
Northeast US
on 20kW-6730
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answer 1
There are so many factors that can affect the gas pressure that we recommend an onsite inspection and professional recommendation by a LP gas professional. However, we are able to provide you with the fuel consumption rates and required water column which will help provide the correct size needed for installation. The required fuel pressure to the generator fuel inlet at all load ranges is 10 to 12 inches of water column for LP gas. Fuel consumption at full load is 2.9 gallons/hour. For additional information, please consult the spec sheet at http://www.generac.com/SpecSheets/0...
answered 2 years, 11 months ago
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GeneracPowerSystems
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Question

What size propane tank is required for a 20 KW generator?

asked 2 years, 11 months ago
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ken
on 20kW-6730
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For liquid propane at ½ load, the 20kW uses 1.89 gallons per hour. You can use this to size your LP fuel tank to accommodate the amount of running time you prefer. Refer to the 20kW spec sheet for additional fuel consumption data. http://www.generac.com/SpecSheets/0...
answered 2 years, 11 months ago
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GeneracPowerSystems
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Question

What size wire do I use between Generac RTS-D200A3 transfer switch to a Generac 20kw generator?

State: CT - Connecticut
Age: 45-54
This product will backup: Entire Home
asked 2 years, 11 months ago
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Sparky
Monroe
on 20kW-6730
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answer 1
Typically a #4 wire is used, but it may have to be a heavier gauge depending upon the distance between the generator and the transfer switch. We recommend consulting a Generac dealer for more information. You can find a dealer near you by visiting http://www.generac.com/Service/Deal...
answered 2 years, 11 months ago
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GeneracPowerSystems
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Question

How much peak power will it provide for starting motors and air conditioners?

State: NY - New York
Age: 55-64
This product will backup: Entire Home
asked 2 years, 11 months ago
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Bill
on 20kW-6730
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answer 1
145 amps at a 30% voltage dip.
answered 2 years, 11 months ago
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GeneracPowerSystems
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Question

Set Up and Programming

I am considering installing a 20KW generator in my home and my dealer says that I need to have them program and start up my unit which they want to charge me a lot of money to do. Is this something that either my electrician or I can handle?

Thank you.
State: NJ - New Jersey
Age: 55-64
This product will backup: Refrigerator Freezer
asked 2 years, 11 months ago
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Builder
New Jersey
on 20kW-6730
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answer 1
There is an activation that needs to be done, but it can be done by a homeowner. However, a 20kW will require the electrician since they will need to pull the meter face for transfer switch installation.
answered 2 years, 11 months ago
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GeneracPowerSystems
-1point
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Question

Will this gen set start in colder climates -20 or even colder

QT20 aircooled I have a lady that would like this gen set, but is worried that it will not start in cold weather -10 or colder.Unit will be outside.Can this unit sit inside if operating on proprane?
State: MT - Montana
Age: 45-54
This product will backup: Entire Home
asked 2 years, 11 months ago
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Mr Wire
Wolf Point
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answer 1
It will work as long as a cold weather kit is installed and synthetic oil is used. For information about the appropriate viscosity oil to use, see the owner's manual at http://goo.gl/UF991
answered 2 years, 11 months ago
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GeneracPowerSystems
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Question

Fuel consumption and power output

I see on the spec sheet the natual gas requirement to run the generator at half load and at full load. Does the generator only run at those two speeds or does it run at variable speeds depending on the amount of power needed? For example, if my power went out and the only items in my house running required only 1kw to power them, what speed would the generator run at? Full load, half load, or something less than that?
State: IL - Illinois
Age: 45-54
This product will backup: Entire Home
asked 2 years, 11 months ago
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Doug
Deerfield
on 20kW-6730
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answer 1
The generator operates at a constant 3600 RPM, but will consume more fuel as more load is added. The full load and half load fuel consumption information is included as a benchmark. If your system is loaded at less than 50%, then your generator will use something less than the amount of fuel consumed at half load.
answered 2 years, 11 months ago
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GeneracPowerSystems
-3points
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Question

surge current

what is the surge current or surge KW for the 20KW generator? For whaqt duration?
State: NJ - New Jersey
Age: Over 65
This product will backup: Entire Home
asked 2 years, 11 months ago
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prudent
Millstone township
on 20kW-6730
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answer 1
Surge wattage is generally 150% of the rated wattage, and lasts about 3 seconds.
answered 2 years, 11 months ago
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GeneracPowerSystems
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Question

will the exercise cycle work if the generator has run the day before on a new install

asked 2 years, 11 months ago
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by
al
on 20kW-6730
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answer 1
Yes. The exercise can be programmed to run at any time.
answered 2 years, 10 months ago
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GeneracPowerSystems
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Question

Can the life expectancy of this generator be extended past 3000 hours with replacement parts?

The answer to a previous question was "With proper maintenance, it could last up to 3000 hours".
Could the life expectancy of the generator be extended with replacement parts?
Thank you.
State: NY - New York
Age: 45-54
This product will backup: Entire Home
 
Products related to my question
 
 
asked 2 years, 10 months ago
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Emma
Stone Ridge
on 20kW-6730
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answer 1
The "3000 hour" mark is not an absolute--only a milestone. The generator can run for a very long time with proper maintenance, and some individual components can be replaced to extend the life of the unit.
answered 2 years, 10 months ago
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GeneracPowerSystems
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Question

does this generator come with a pre-wired flex conduit like the 10 kw?

State: NJ - New Jersey
Age: 35-44
This product will backup: Entire Home
asked 2 years, 10 months ago
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Aj
Wyckoff
on 20kW-6730
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answer 1
No, this unit does not. The pre-wired conduit is part of Generac's EZ Switch, which can be purchased separately for use with this unit.
answered 2 years, 10 months ago
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