Generator and backup power

Plan critical loads, outdoor location, fuel, transfer and grid isolation without backfeeding.

VERT / GREEN

List truly critical circuits and starting loads before selecting a generator.

JAUNE / YELLOW

A permanent installation requires transfer equipment that isolates the home from the grid and electrical coordination.

ROUGE / RED

Backfeed, generator in/near garage openings, improvised transfer or DIY fixed wiring: stop immediately.

Guided triage

Permanent panel backupUse compliant transfer equipment and have the installation declared.Location near window/air intakeRelocate per manufacturer/CO guidance; never in enclosed space.Unknown starting loadsInventory motors, pumps and heating before sizing.Documented outage planKeep critical circuits, fuel and test procedure documented.

Tools / data

Load inventory W/kW
Critical-circuit plan
Generator/transfer manuals

What the professional checks

Size source and transfer
Verify grid isolation
Coordinate CO, fuel and maintenance

Official sources

Source check / vérification: 2026-08-22. Triage et planification seulement; les travaux réglementés restent aux professionnels requis.

Tools related to this issue

Whole-home action plan

Open →

Electrification and EV charging

Open →

V18

Specialized diagnostics to verify

V18 connects systems that become costly or regulated when a primary project triggers them.

Home battery

V32

Post-disaster and legacy systems

V32 connects contamination, storm damage, legacy materials and recommissioning before rebuilding.

Sewage backup: contamination and recovery