What Size Gas Line For A Home Backup Generator?

A home backup generator may or may not be connected to a gas line to provide it with fuel. A generator that is not connected to a gas line will require the use of fuel cans, which can be cumbersome and expensive. Those that are connected to a gas line can provide power for days or weeks, depending on the size of the generator and the home’s gas supply.

Does a generator need a dedicated gas line?

A professional plumbing firm will be required to provide a gas line to your property in order to install your new gas-powered generator. It will only take a few hours, and it will be the most affordable element of the generator installation procedure.

A 3/4″ line may be able to provide power to a wide variety of devices. The appliance’s pressure is reduced by the generator’s secondary regulator. This 3/4″ black hose connects to a 3/4″ yellow plastic pipe, which has a regulator at the tank.

What size gas line do you need for a Generac generator?

In accordance with Generac’s specifications, water columns at the generator intake should be 5 to 7 inches in diameter; less than 20 feet of gas line should be 1 inch, 20 feet through 130 feet should be 1.25″ gas line, and 130 feet through 305 feet should be 1.50″ gas line.

What gas pressure is needed for a Generac generator?

Liquid propane vapor requires a pressure of 10 to 12 in water column for Generac systems (19 to 22 mm Hg mercury). If you’re running your generator on natural gas, you’ll need to use various tables, sizes, and separations.

How much natural gas does a 22kw generator use?

When running at maximum power, a 22 KW Generac generator will use 9.7 cubic meters of natural gas. As long as it’s connected directly to your natural gas pipes, you’ll be able to keep your house functioning.

How many gallons of propane does a 22kw generator use per hour?

This sized generator uses as much as three and one-half gallons of propane per hour.

How much does it cost to run a gas line for a generator?

Per linear foot, installing a gas pipe to a generator costs between $20 and $25. In order to have a generator installed, you’ll need to get in touch with an expert plumber.

Can you hook up a portable generator to your house gas line?

Using a portable generator with natural gas is possible, but the process is not always straightforward. Natural gas may be used as a fuel source in certain portable generators, but in others, changes must be made.

Related Questions and Answers

What type of regulator do I need for a Generac generator?

Selecting a regulator that can handle around 9,000 cubic feet of air per hour is essential. A 1-1/2″ Model 122-12 regulator with a blue spring and an upstream gas pressure of 2 psi would be the first option.

How far does a regulator have to be from a generator?

Vent openings for appliances with sealed combustion chambers and mechanical ventilation air intakes should be at least 5 feet away from the regulator safety relief valve (vent opening). Mechanical equipment, such as regulators, are prone to malfunction.

How far away does a generator need to be from a propane tank?

A generator should be at least ten feet away from a propane tank.

What Size Home Standby Generator Should I Get?

Choosing a home standby generator does not have to be difficult. This video should help:

How many BTU does a natural gas generator use?

At 3600 RPM, a generator engine uses around 10,000 BTU per horsepower per hour when operating at full capacity.

Does a propane generator need a regulator?

No. Propane regulators must be able to provide the generator with the right static water column and maintain the maximum permissible pressure drop at the same time.

How many Btus does a 16kw Generac generator use?

For natural gas, the nominal fuel consumption is 247 cu ft/hr, while the nominal propane gas consumption is 110 cu ft/hr.

Can a gas regulator be installed upside down?

First, determine where and how to install your gas regulator. Some regulators may be installed in any orientation (including upside-down). Others can’t work until they’re installed according to the manufacturer’s instructions. In order to prevent the regulator from leaking, use a drip leg right in front of it.

Is it normal to smell gas by the meter?

A regulator on the gas meter allows you to fine-tune how much gas is delivered to your home or place of business. Occasionally, it may “burp” or “bleed” out a little quantity of gas in order to prevent the pressure in your house from being too high. A mild gas odor coming from the meter is, in fact, typical.

How close can an electrical outlet be to a gas meter?

The electric meter should be at least 3 feet (914.4mm) away from any gas line. This is critical if your system is at danger of overheating.

What is cheaper to run a gas or propane generator?

In terms of BTUs per cubic foot, natural gas gives 1,040, whereas propane delivers 2,490. As a result, you’ll use more than twice as much natural gas as you would propane in the same amount of time. That doesn’t mean propane is less expensive than natural gas. It’s a little more pricey.

How long will a 100 lb propane tank run a generator?

A 7-kilowatt generator can operate for 66 hours on a 100-pound tank, whereas a 12-kilowatt generator can run for 36 hours on the same tank. The fuel supply may last longer if generators are used at a lower percentage of their capacity, which is typically between 25 and 75 percent. It takes 23.6 gallons to fill a 100-pound propane tank with gas.

How far does a 500-gallon propane tank need to be from a generator?

Propane tanks of 500 gallons should be ten feet away from a generator. This is the minimum distance from any source of ignition.

How do I get gas connected to my house?

A local gas distribution network operator will be required to connect your home to a gas supply (DNO). Those that provide gas to your home are known as Distribution Network Operators (DNOs).

Is a natural gas backup generator worth it?

Natural gas generators are more cost-effective, efficient, and environmentally friendly than fossil-fuel-powered generators. However, these generators aren’t the greatest option for every situation. It is up to the homeowner to decide what type matches their energy requirements and preferences.


The generator you are considering purchasing may require a gas line be connected. The size of this line depends on a number of factors, so make sure to check with the manufacturer’s recommendations to get a better idea on how to proceed.

The “cost to install a gas line for generator” is a question that often does not have a clear answer. There are many factors that go into the cost of installing a gas line, such as the size of the home and if there are any other appliances in the area.

NEXT UP: Do I Need A Permit For A Home Backup Generator?

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Leon Ashcraft
About Leon Ashcraft

Leon Ashcraft is a Safety Instructor and consultant in Colorado with focus on OSHA, environmental health and safety, transportation safety, oil & gas, rescue operations and construction safety. Learn more about Leon here or connect with him on Twitter | LinkedIn | Medium

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