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FAQ

Generac Residential Frequently Asked Questions

 

1. Who is Generac?
 Since 1959, Generac has been producing backup generators for residential, commercial, and industrial applications. We have quietly grown into the world's largest provider of residential stand by generators and currently sell five times more generators than all of our competitors combined. For over 50 years we have concentrated our efforts in bringing the most affordable and highest quality generators to home owners and business owners alike. Generac offers the broadest line of stand-by generators in the market; they are widely available and supported nationwide by the industry’s largest professional network of over four thousand factory trained service and installation dealers, and are also available at major retailers and wholesalers.

2. What is an automatic standby generator?
 An automatic standby generator is a back-up electrical system that operates whether you are home or away. Within seconds of an outage, it automatically supplies power directly to your home’s electrical circuit breaker box. After utility power returns, the generator shuts itself off and waits for the next outage. It operates on natural gas or liquid propane gas and sits outside just like a central air conditioning unit.

3. How does a home standby system work? Watch here. 

4. Why should I buy an automatic standby generator instead of a portable generator?
During a utility power outage, an automatic standby generator provides numerous advantages over a portable generator:

  • The American Red Cross recommends permanently installed standby generators as a safer way to provide backup power to a home than a portable generator.
  • With an automatic standby generator properly installed outside, your home is protected from deadly carbon monoxide poisoning that is a much greater risk with portable generators.
  • Running on the home’s natural gas or LP fuel supply, it is less expensive to run than gasoline and does not need to be refilled.
  • They start automatically within seconds of a power outage, and eliminate the need to haul a portable generator outside or run extension cords throughout your home.
  • They provide protection 24/7, whether you're home or away, and they turn themselves off when utility power returns, so there is no need to monitor the unit during an outage.

5. What is the difference between an automatic air-cooled generator and an automatic liquid- cooled generator?
 The engines! Air cooled generators come with engines that use fans to force air across the engine for cooling, while liquid cooled generators use enclosed radiator systems for cooling, similar to an automobile. Generally, liquid cooled engines are used on larger kW generators due to the larger engines required for the higher power output.

6. How does the Generac OHVI® engine compare to air cooled engines used in other brands of standby generators?
 Unlike all other engines manufactured primarily for lawn and garden applications, Generac OHVI engines are made specifically for generators. They are engineered to run for the long periods of time required during a severe power outage or on a job site, utilizing the same type of pressurized oil lubrication used to give automobile engines long and trouble-free lives. Generac OHVI engines have a significantly longer life than competitive engines – an unprecedented three to four times longer – making them the best investment on the market.

7. How long can I expect an automatic standby generator to last?
 Because Generac engines were developed specifically for generators and designed to provide approximately 3,000 hours of use, with typical usage and proper maintenance an automatic standby generator can provide in excess of 30 years of service.

Example: Weekly exercise time (11 hours per year) plus four 20 hr. outages (80 hrs/year) equals 91 hours of operation per year OR over 30 years.

8. What's the advantage of an aluminum enclosure?
 In addition to its sturdy galvanneal steel enclosure with RhinoCoat™, Generac is one of the few companies to offer premium aluminum enclosures for its residential standby generators. Aluminum enclosures are naturally rust and corrosion resistant. For salt air or high humidity conditions, aluminum is highly recommended to ensure decades of worry free service.

9. Can an automatic standby generator replace utility service?
 No...the generator fuel costs would be much more expensive than buying power from the utility company since their cost to produce electricity is divided among thousands of customers.

10. How do I correctly size a generator for my home?
 The most logical way to determine your needs is to envision your home without power! Some outages may be short in duration, while others could last for days or weeks. What would you like your living conditions to be?

Generac takes the guesswork out of sizing by supplying the Guardian Series air cooled generators with predetermined numbers of circuits based on the generator’s kW power rating. For example, eight circuits are supplied for the 8 kW generator and as many as 16 circuits are supplied for the 17 kW generator. Each circuit is directly connected to a matched circuit on the home’s main circuit breaker panel, providing electricity to that specific appliance or area of the home.

In a typical installation with an 8 kW, eight circuit generator, you could connect (1) lights and TV in the family room, (2) microwave and lights in the kitchen, (3) refrigerator, (4) power to the bathroom, (5) computer and home office, (6) garage door opener, (7) air conditioner, and (8) furnace.

Generac also offers generators and transfer switches that can power the entire circuit breaker panel box...for these situations, we recommend consulting with an authorized Generac dealer or a qualified electrician

11. Can I install the generator myself?
 Generac Guardian Series air cooled generator systems are prepackaged, pre-wired and come with comprehensive installation instructions. You could perform the simpler site preparation steps and have a professional make the electrical panel and fuel connections, or you could complete the entire installation yourself. However, for safety reasons and to ensure adherence to all local, state and national electrical codes, particularly for non pre-wired or larger systems, Generac recommends you use an authorized Generac dealer or licensed contractor.

12. Do they have to be maintained?
Yes, simple maintenance is required. Every Generac Guardian Series standby generator is powered by Generac’s Overhead Valve Industrial (OHVI) engine. These engines were designed specifically for running long hours in harsh conditions and have maintenance intervals that are twice as long as leading competitors’. All generators require periodic oil and filter changes to ensure maximum performance for years of reliable service. Preventative maintenance kits are available and many Generac dealers offer annual maintenance contracts for a worry-free ownership experience. Refer to the owner’s manual for routine maintenance procedures and schedules.

13. What type of oil should I use?
An SAE rated high detergent oil that meets API Service Class SF requirements for gasoline engines, similar to your car. Refer to your owner’s manual for details.

14. What happens if the generator gets over loaded?
 Generac generators are equipped with overload protection. In the rare event of an overload, the generator’s circuit breaker will trip, disconnecting the unit from the load. Simply correct the overload and reset the breaker in the generator.

15. I no longer have my Owner's Manual, how can I get another copy?
 Owner’s manuals and other technical/ repair information can be downloaded from generac.com or by calling 1-888-generac.

16. If I have a problem with my generator where do I go for help?
 To find an authorized Generac Service Center for parts or service, refer to the Dealer Locater at generac.com or call the Automated Dealer Locater at 1-888-generac.

 

 

Briggs & Stratton FREQUENTLY ASKED GENERATOR QUESTIONS

 

About the Product

What is the difference between portable and automatic Home Generator Systems?

The differences have to do with the steps needed to have emergency power flowing into your house in the event of a power outage. Portable systems are wheeled units that require you to roll the generator outside, start it up, and hook it up to a power inlet box. From there you must go to the transfer switch panel installed near your circuit breakers and switch the power coming into your house from the main line to the generator running outside. After the power from your local utility is restored, you are required to reverse the setup process.

One of the clear advantages with an Automatic Home Generator System is that the unit turns itself on and off automatically without you ever having to leave the safety of your home. Our automatic Home Generator Systems also exercise themselves once a week. You can even set the time when the unit will perform this diagnostics check. The generator will then be ready to run whenever needed.

What size Standby generator do I need to run electric items in my house during a power outage?

Most average homes of 1200 to 3000 sq. ft. can run critical items in the home by using a 5000-7000 watt generator. The most common items that need emergency power during a blackout would be the furnace blower motor, refrigerator, freezer, lights, TV, sump pump, and water pumps. Larger Home Generator Systems in the 10-15KW range will quietly supply as much as 18,000 watts of starting power to your home automatically, giving your family the power, freedom & comfort of their usual lifestyle uninterrupted by power failure. The new IntelliGEN series of generators allows you to supply power to both essential items PLUS up to 6 high wattage appliances including 2 central air units for the ultimate in comfort and control.

Can I run a computer or other sensitive electronic equipment off the generator during a power outage?

Yes. The power coming from your generator is just as safe as what you normally have coming out of the wall socket. The spikes or surges that accompany power generation (also known as "harmonic distortion") are just a normal aspect of electricity. However, when considering sensitive or expensive electronic equipment running off a wall outlet, you should use a good surge protector to guard against small influxes of power.

Does motor starting require a different wattage?

Yes. Induction motors require larger amounts of amperage for initial start-up than when they are running. Some appliances and tools, such as your refrigerator/freezer, furnace fan, air conditioner, electric chain saw, weed trimmer, etc. will require more watts than normal running wattage for motor starting. This must be considered when sizing a generator to meet your needs.

What does a Home Generator System typically cost?

When you choose the safety, reliability and automatic operation of a Home Generator System, there are several items that contribute to the total cost, the cost of the system itself, a transfer switch, and installation charges. Optional maintenance contracts can also add to the cost if you choose one. Costs may vary depending on the size of the unit, transfer switch used, location of installation, and permits required for installation. Check with a local dealer for specifics.

How does the Home Generator System work?

At the point of loss of utility power, the system will wait approximately 6 seconds to start (this is to verify that the power is going to stay out). After it has started it will go through a warm up period of 20 seconds. After this time the transfer switch will change over to generator power. The house will remain under generator power for a minimum of 5 minutes, even if the utility power comes back on. After utility has come back on, and the generator has powered up the house for at least 5 minutes, the transfer switch will go back to utility power after 10 seconds. The generator will then run 1 minute to cool down before turning itself off.

Can I run my central air conditioner on the Home Generator System?

Yes. We have devised a transfer switch that will monitor loads on the generator, under emergency power, to determine if there is enough room on the generator to run a central air unit at a four ton rating or less on our 12 and 15KW Generator Systems. They are called our ACCM transfer switches. They are available in 100 or 200 amp sizes. We also offer a Power Management System to aide in running air conditioning systems.

What is a transfer switch?

A transfer switch is a device that is fed by both utility and generator power. It isolates the two types of power from each other so a back feed does not occur. National Electrical Code requires a device like this if two types of power are going to feed the house.

How do I know what size transfer switch I need?

There are many factors that will determine the size transfer switch needed (size of utility service, appliances needed to run, size of generator, etc.). The transfer switches vary in size from 50, 100 and 200 amps. Call 1-800-743-4115 or inquire with a local dealer in your area for assistance. The 50 amp transfer switch has a sub panel in it capable of connecting to eight circuits. The 100 and 200 amp transfer switches are whole house feed and feed the entire distribution panel.

What is the Power Management System and how can it benefit me?

With our ACCM transfer switch, there must be room on the generator for a central air unit to run. The Power Management System isolates six circuits from your main distribution panel to allow the air conditioner to start when it wants. Basically, the Power Management System makes room on the generator. These would be circuits that you would not mind being turned off for a short period of time while the A/C runs. You can hook these circuits up in priority, 1 is the highest priority and 6 is the lowest. Discuss with a dealer how you want each item hooked up.

How do I purchase one…who do I call?

If you are interested in learning more about our products or are looking for information on how to purchase please call (800) 732-2989.

How can someone become a dealer for Home Generator Systems?

If you are an electrician, small engine dealer, or in the construction trade and are interested in providing Briggs & Stratton Home Generator Systems to your customers please call (800) 732-2989.

Can I install the unit myself or does someone else need to?

It is recommended that you have your Home Generator System (generator and transfer switch) installed by a licensed contractor. Failure to do so could be dangerous for both family members as well as outside repair workers trying to fix downed power lines. In addition, professional installation is required to maintain the warranty. They would also make sure that all the necessary permits are pulled to verify an inspector would pass it. Most Briggs & Stratton Home Power Products dealers are capable of not only performing the necessary installation, but can also offer maintenance agreements that ensures the generator is being serviced on a regular basis. See our Where to Buy page for the dealer nearest you.

What happens in a typical installation?

A basic installation includes:

1.     Delivery of the system to dealer. Additional charges for drop ship to consumer.

2.     Installation of the 50, 100 or 200 amp transfer switch is then hardwired into your home or business.

3.     The transfer switch is installed within 2 feet of the main distribution panel and 30 feet of the generator inlet box.

4.     Final start up inspection of system and completion of start up form.

5.     Clean-up of installation debris after installation is completed.

6.     Consumer is responsible for making arrangements to provide all necessary gas service and connections.

What does Automatic Voltage Regulation (AVR) do for me?

The EM7 EmPower™ Series, EM7RS EmPower™ Series and the 7kW POWERNOW! Dual Mode System feature AVR. AVR maintains a more steady voltage than something that is not regulated. This is especially important for running sensitive electronics such as computers, microwaves, and televisions.

What is the warranty?

The warranties will vary depending upon the unit that is purchased. Entry-level systems will carry a 2-year warranty; while more advanced systems carry a 3-year/1500 hour warranty. There is also a fourth year power train warranty with our more advanced units. All you need to do to get qualified for that is send in the installation checklist. The transfer switches carry a standard 3-year warranty.

 

About Maintenance & Use

Do I need to start the generator frequently when it is not being used?

One of the advantages of the 7, 10, 12, and 15KW automatic Home Generator Systems is that they are designed to run once a week for twenty minutes. All you have to do is program it when you want this task to be performed and it will start up automatically. During this time it will not only lubricate the engine, but it will also run a diagnostics check. If there are any problems with this process, an LED display located inside the front access panel will alert you.

How long will a unit run before I have to let it cool down or refill it with fuel?

Another advantage of our Home Generator Systems is that they run on liquid petroleum or natural gas, so they don’t need to be refueled as often, if at all. Additionally, rest periods to allow cooling are not necessary. All Briggs & Stratton Home Generator Systems are air-cooled and do not require you to turn them off after extended run times. However, you will need to turn off the unit before refueling (if running on LP gas) or when checking the oil levels which should be done on a regular basis during and after extended use (refer to your owner’s guide for instructions).

Do I have to worry about "back feed" if the generator is running when the power comes back on?

No. All of our transfer switches are designed to keep generator back feed from occurring. When the contractor installs the transfer switch, it will be connected directly to the utility power. A control board will be able to sense when the utility power has returned to transfer back to utility (it is programmed so the generator powers up the house for a minimum of five minutes). Everything is programmed so that one source of power is broken before another source of power is made.

How often do I have to change the oil?

The engine maintenance manual recommends 50-hour intervals between oil changes and 100-hour intervals for the oil filter. We do require that 5W30 fully synthetic oil be used when doing a change. This will enable the engine to stabilize quicker (it has 20 seconds to do this). All Home Generator Systems are shipped fully lubricated and the engines broken in, no break-in of the engine needs to be performed.

Who do I call if I have any questions or maintenance issues?

We recommend that you first contact the person or contractor who performed the original installation. First-hand knowledge of your original system installation qualifies them as the best equipped to field questions and perform any needed maintenance. Oftentimes installers will also offer you special maintenance agreements once the original system is installed, making any potential mechanical problems less worrisome to the consumer. You can also call Briggs & Stratton directly at (800) 743-4115, Monday through Friday, 8am-5pm Central Standard Time if a problem requires additional help. We are always here to help.

Can I vent exhaust out of an enclosed area?

No. Carbon monoxide gases produced by the engine could be deadly. Briggs & Stratton Home Power Products are designed to be run outside where there is plenty of ventilation. Never run these units inside a home or enclosed area. Fortunately, all Briggs & Stratton Home Generator Systems are permanently installed outside your home.

Can I run the generator inside my home?

No! A generator has an internal combustion engine and uses gas and oil. The exhaust from running a generator contains lethal carbon monoxide. Therefore, this unit should always be placed in a well ventilated area.

 

Winco FAQ

What Is Backup Power?

Answer:

Backup power consists of a standby generator system and an automatic transfer switch (ATS). The ATS continually monitors the utility power for an interruption and once utility power is lost, it will start the generator, transfer the electrical loads, and restore power to your home. Once utility power is fully restored, the ATS reverses the process automatically. The standby generator is designed to automatically furnish electrical power to pre-selected or/and all circuits in your home that supply your appliances, cooling, heating, lights, and water. Working together they supply backup power to your home or business.

 

What is the difference between 2 wire and 4 wire start?

WINCO manufactures all air-cooled standbys (PSS8, PSS12, and PSS15) in a four-wire (4-Wire) configuration which means the ATS is handling all engine starting functions. In addition, we offer a 2-wire option for these systems. In the 2-wire configuration, the transfer switch sends a start signal to the generator; however, the neutral starting of the generator is handled by the engine control module in the generator.  The wires referred to here are DC control leads, not power leads.

 

Another way to describe the 2-wire and 4-wire difference is in a 4-wire configuration all the logic exists in the ATS, and in a 2-wire configuration the start signal comes from the ATS for both power failure and exercise but the logic to start the unit is in the generator. Remember to always order a 2-wire ATS with a 2-wire PSS generator, and a 4-wire ATS with a 4-wire PSS generator.

 

When a WINCO generator is replacing an exiting 2-wire start generator where a reliable 2-wire transfer switch is already in place, it makes sense to purchase a 2-wire control module.  There is no need to purchase another transfer switch.  This is because 2-wire generators are matched with 2-wire ATS’s and 4-wire generators are matched with 4-wire ATS’s.

 

What size generator do I need?

Hire an Electrician

An electrician is able to do a load test on your home or business and determine the size generator needed. You can also contact your electric utility and ask for a peak demand load.

 

Do-It-Yourself

To properly determine the size generator needed, you need to decide whether you want the generator to operate part or all of your home or business. The next step is to identify the appliances or equipment the generator will need to power. Then determine the wattage for each appliance and piece of equipment you plan to use. Another key step is to identify motor and pump requirements, then calculate and total the wattage for each. Always use starting watts, not running watts, when determining the correct electrical load requirements. The final step is to total the wattage of the appliances and equipment together with the motors and pumps.

 

Consider that if you coordinate your power usage efficiently you do not have to operate everything all at once. For emergency use you don’t necessarily need to size the generator to operate everything simultaneously.

 

What Type Of Fuel Is Best?

Answer: 

Winco offers the Package Standby Systems to be run on either LP or natural gas. There are pros and cons for each.

Liquid Propane (LP)

¨       Pros

o        Long Shelf Life

o        Clean Burning

o        Obtainable during power outages

o        Home delivery available for larger tanks

¨       Cons

o        Pressurized cylinder of flammable gas

o        Fuel system is more complicated (increased possibility of failure)

o        Fuel system plumbing results in higher installation cost

o        Can not be used in most areas if you have natural gas

Natural Gas

¨       Pros

o        Unlimited fuel source

o        Clean burning

o        Available during power outages

¨       Cons

o        May be unavailable during natural disasters (earthquakes, etc.)

o        Lower BTU results in derating the generator

o        Fuel system plumbing results in higher installation cost

o        Not available in many areas

 

Which System Is Right For You?

All homes and businesses are different and they each require personalized needs. Winco offers a variety of standby power system sizes and options to fit any requirement. Please refer to our Winco Power Systems Load Chart to see the options. Be sure to consult your local building inspector or city/county office for rules or building codes regarding standby generator systems.