Generator Installation near you

CPSC's guidance on portable generators is absolute and leaves no room for the usual improvisations. Never run a generator in the home, garage or crawlspace, and understand that opening doors and windows or using fans will not prevent carbon monoxide from building up in the house. Running a generator in an attached garage can cause fatal poisoning indoors, and so can running one in a basement, a crawlspace or a living area. A generator that is outdoors but too close is still dangerous, which is why the instruction is to operate it away from open doors, windows and vents that could let exhaust indoors.

The distance is not a matter of taste. Ready.gov's guidance for power outages is that generators and fuel should always be used outdoors and at least 20 feet away from windows, doors and attached garages, with working carbon monoxide detectors on every level of the home. The US Fire Administration makes the same point from the fire service side, telling people to use portable generators outdoors in well-ventilated areas away from all doors, windows and vents, and noting that more than 150 people in the United States die every year from accidental non-fire carbon monoxide.

If anyone in the house develops symptoms, treat it as the emergency it is rather than as flu. CPSC's advice is to get fresh air immediately, leave the home and call for assistance from a neighbor's home, because you could lose consciousness and die from CO poisoning if you stay inside. Get medical attention immediately, tell the medical staff that CO poisoning is suspected, and call the fire department to determine when it is safe to re-enter.

The purpose of transfer equipment is to make it physically impossible for the generator and the utility to feed the same wiring at the same time. A transfer switch, manual or automatic, moves the selected circuits from one source to the other. A listed panel interlock does the same job mechanically, by preventing the main breaker and the generator breaker from being closed together. The third option, feeding a generator into a receptacle with a double-ended cord, is not a method; it defeats that separation and it is why the permanent connection is electrical work with a permit behind it.

American code treats a standby generator as a system that has to announce itself, because the next person to open the service equipment may not know it is there. Washington's adoption of the National Electrical Code requires that the signs called for in NEC 702.7(A) be placed where required and also at the meter base when the meter base is not within sight and within five feet of where the sign is required, and adds a further placement rule where the disconnecting means required by NEC 230.85 is not present. Article 702 covers optional standby systems and Article 705 covers interconnection, and your jurisdiction enforces whichever NEC edition it has adopted.

Choosing between a transfer switch and an interlock usually comes down to the panel. An interlock kit must be listed for that specific panel, which rules it out on some equipment, while a transfer switch or a small transfer subpanel works with almost anything and makes the backed-up circuits explicit. Ask the electrician to walk you through which circuits will be live, what the generator can actually carry when the well pump and the furnace start together, and what will happen if someone switches on the wrong thing during an outage.

Sizing starts with a list, not a square footage. The electrician establishes what must keep running, generally heating and its controls, a sump or well pump, refrigeration, a few lighting and receptacle circuits and any medical equipment, then accounts for motors drawing far more at startup than while running. That list decides both the generator and the transfer equipment, and it is where an honest installer will tell you that a smaller unit with a well-chosen circuit list beats a larger one that nobody maintains.

Siting is where the carbon monoxide rules become a design constraint rather than a warning label. The unit goes outdoors, clear of doors, windows, vents and air intakes, on a stable base above the level where water collects or snow piles, with the clearances the manufacturer specifies for service and airflow. Local rules commonly add setbacks from property lines and noise limits, and for a gas-fired standby unit the fuel connection is separate work by whoever is licensed for gas in your state, sized so the meter or tank can serve the generator alongside everything else.

The installation itself usually spans a pad or base, the generator, the transfer equipment at or beside the panel, the fuel connection, the control wiring, labels and signage, then an inspection before the system is commissioned and tested under load. Ask to be shown the monthly or weekly exercise setting, the manual transfer procedure for the day the automatic function fails, and where the fuel shutoff is. Ask for the permit and the signed inspection record at the end, and keep them with the house papers.

There is one federal rule in force specifically about portable generators, and it is about warning you. Part 1407 of title 16 of the Code of Federal Regulations requires manufacturers to put a carbon monoxide poisoning hazard label on the product and on the package, with the signal word DANGER in letters not less than 0.15 inch high, and it applies to any generator manufactured or imported on or after May 14, 2007. The same part defines a portable generator as an internal combustion engine-driven electric generator rated no higher than 15 kilowatts and 250 volts, intended to be moved for temporary use where utility-supplied power is not available.

The engineering answer to the hazard sits in voluntary standards that newer machines are built to. Following its 2016 proposal, CPSC's rulemaking record notes that Underwriters Laboratories published UL 2201, covering the carbon monoxide emission rate of portable generators, in January 2018, and that the Portable Generator Manufacturers Association published ANSI/PGMA G300-2018 in April 2018. Under the shutoff criteria described in that record, a CO sensor must shut the generator down before the concentration measured one to two inches above the center of the machine's top surface exceeds 400 parts per million by volume as a ten-minute rolling average, or 800 parts per million by volume instantaneously, and the system must be tamper resistant.

Whether all of this becomes mandatory is still open. CPSC issued a supplemental notice of proposed rulemaking for a Safety Standard for Portable Generators in 2023, and the Commission's regulatory agenda published in the Federal Register in August 2026 still lists that standard, under regulation identifier 3041-AC36, at the final rule stage rather than as a rule in force. When buying, ask whether the model meets UL 2201 or ANSI/PGMA G300, and treat that as a useful feature rather than as a substitute for the siting rules, which apply to every generator regardless.

Connecting any generator to house wiring is licensed electrical work, and the licence is issued by your state rather than by any federal body. Texas requires anyone who performs, or offers to perform, non-exempt electrical work to be licensed and to perform that work through a licensed electrical contractor. Other states license the contracting business, the individual, or both. Ask for the number, verify it with the board, and ask separately who holds the gas credential if the unit burns natural gas or propane, because that is usually a different trade and sometimes a different company.

Expect a permit and an inspection. The work touches the service equipment, adds a second source of supply and requires identification signage under the standby and interconnection articles of the National Electrical Code as adopted in your state, all of which an inspector exists to check. If a quote is noticeably cheaper than the others and does not mention a permit, that is usually the difference rather than efficiency. Unpermitted work on service equipment has a way of resurfacing during a sale or an insurance claim.

Finally, ask about the utility. A standby generator that is properly isolated by transfer equipment is not an interconnection in the sense that solar is, but utilities have their own requirements and your installer should know them. Washington's rule that an interconnection to the utility distribution network must consult the serving utility and meet all additional utility standards is a good reminder that the utility's word governs anything touching its network.