# Generator planning: safe placement and connection are separate decisions

Portable generators belong outdoors with exhaust kept away from occupied buildings and openings. Connecting backup power to house wiring requires a qualified design; never improvise a backfeed connection.

Publisher: LocalFoundry. Published: 2026-10-27T05:32:12.774Z. Updated: 2026-10-27T06:19:24.084Z.

AI-assisted research and writing; primary sources are cited. General homeowner guidance, not an onsite inspection or professional diagnosis.

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## The useful answer

Portable generators belong outdoors with exhaust kept away from occupied buildings and openings. Connecting backup power to house wiring requires a qualified design; never improvise a backfeed connection.

## Choose the loads and operating plan

List essential equipment and how long it may need power. Include starting behavior and any critical needs in the professional discussion rather than selecting a generator from one advertised output number. Backup planning also needs fuel, weather, safe access and a household operating procedure. Equipment ownership is not proof that the home has a safe connection arrangement.

## Keep exhaust outside and away

CPSC recommends operating portable generators outdoors at least twenty feet from the house, directing exhaust away from homes and other buildings. Never operate one in a garage, basement, crawlspace or enclosed porch. Follow the exact manufacturer instructions and account for nearby openings. A CO shutoff feature does not make indoor use safe.

Supporting sources: [CPSC — portable generator and carbon monoxide safety](https://www.cpsc.gov/s3fs-public/468-WhattoKnowGenerators_2022.pdf)

## Separate the two safety questions

A safe electrical connection cannot compensate for unsafe exhaust placement, and safe placement does not authorize an improvised wiring connection.

### Backup-power planning

| What you notice | What to record | Useful next step |
| --- | --- | --- |
| Placement | Outdoor location, exhaust and openings | Follow CPSC and manufacturer guidance |
| Connection | Equipment and home wiring interface | Use a qualified electrician’s approved design |
| Operation | Loads, fuel and household instructions | Train responsible occupants before an outage |

## Plan before the power fails

Ask a qualified electrician about an appropriate transfer arrangement and required approvals if powering house circuits. Never use an improvised cord to feed power into a wall outlet. Keep CO alarms maintained and respond to an alarm by getting outside and calling emergency services. Request a demonstration and written instructions before depending on the system during an outage.

## Questions homeowners ask

### Is an open garage door enough ventilation?

No. CPSC says portable generators must be used outside, away from the home and openings. An open garage does not make indoor operation safe.

### Can I plug the generator into a wall outlet?

No. Do not improvise backfeeding. A qualified electrician must design the appropriate connection for supplying home circuits.

### Does automatic CO shutoff allow closer placement?

Do not treat it as permission to ignore placement instructions. Follow CPSC and manufacturer guidance; a safety feature does not remove the exhaust hazard.

## Sources & verification

- [CPSC — portable generator and carbon monoxide safety](https://www.cpsc.gov/s3fs-public/468-WhattoKnowGenerators_2022.pdf) � checked 2026-10-27T04:57:11.448Z

The linked authorities do not endorse LocalFoundry or its providers. Confirm current requirements for your property.