Power back, then back off? Inrush issue.
Some appliances draw surge current at startup. After outages, all the appliances try to restart simultaneously — combined inrush exceeds circuit capacity or trips sensitive breakers.
By Steven Lockhart · Reviewed by Alex Towery, C-10 #989290
Updated 2026-06-16
Power coming back then tripping: usually inrush current from appliances restarting simultaneously, or a single appliance with damage from the outage. Diagnostic: turn off main, then turn off all branch breakers. Turn on main (should hold). Turn on branch breakers one by one, waiting between each. Identify which branch or appliance causes the trip. Sometimes a damaged appliance is the culprit; sometimes inrush load needs management.
01Why inrush trips after outages.
Many appliances draw large startup current — 3-10x running current for a brief moment as motors start, compressors engage, or capacitors charge. During normal operation, appliances start at different times; total inrush is staggered. After an outage, all the appliances powered-up at once try to restart simultaneously when power returns. Total combined inrush can exceed breaker capacity (especially older or marginally-sized breakers) or trip sensitive AFCI/GFCI breakers that detect the surge as a fault.
Common offenders: refrigerator and freezer compressors (large compressors draw significant inrush), HVAC compressors if AC is on, well pump motors, pool pumps, garage door openers, electric water heaters. A home with multiple compressor-driven appliances on the same circuit can easily exceed inrush capacity when all try to restart at once.
02Step-by-step recovery.
Step 1 — Load shedding before restart
If you can anticipate power restoration (PG&E provides estimated restoration time): walk through the house and turn off appliances at their switches or unplug them. Computers, sensitive electronics, TVs, audio equipment. Leave only essentials on (refrigerator, freezer). When power restores, fewer appliances try to restart simultaneously.
Step 2 — Isolate the trip cause
If power restores but trips immediately: turn off main breaker. Turn off all branch breakers. Turn main back on (should hold). Turn on branch breakers one at a time, waiting 30-60 seconds between each. The one that trips: that branch has either too much inrush load or a faulty appliance. Continue identifying with that branch off.
Step 3 — Test individual appliances
With the suspect branch isolated, unplug all appliances on that branch. Reset the branch breaker. Plug in appliances one at a time. The appliance that causes the trip is the failure — could be damaged from the outage (sometimes), or has been failing for a while and the outage triggered the final fault.
03When the problem is the appliance, not the wiring.
Appliance damage from outages: voltage spikes during restoration can damage sensitive electronics. Symptoms include immediate trip when plugged in, visible damage (burn marks, smell), or just non-functional behavior. Common damaged items: variable-speed motors (refrigerator inverter boards, modern HVAC), electronics with power supply failure (computers, TVs, audio gear). Insurance may cover documented outage-related damage; document the outage time and the affected items.
If the appliance is the cause: replace or repair the appliance, then the branch circuit should work normally. If the branch repeatedly trips even without that specific appliance: deeper wiring issue (degraded wiring, loose connection, sometimes water-damaged junction box). Call electrician for branch wiring diagnosis. Cost $200-$400 for diagnostic; repair varies with scope.
Common questions.
Should I unplug things before next outage?
For long-anticipated outages (PSPS with advance notice): yes, unplugging or switching off sensitive electronics before the outage and restoration helps. For unexpected outages: not realistic. Whole-home surge protection installed at the panel ($300-$600) provides ongoing protection against voltage spikes during restoration. Worth considering for homes with significant electronics or repeated outage exposure.
Is whole-home surge protection worth it?
For most Marin homes — yes. $300-$600 install protects all home electronics from voltage spikes (outage restoration, lightning, grid switching). Pays back if it prevents even one significant electronics replacement event. Standard practice for new construction and panel upgrades in Marin since around 2020. Easy retrofit on existing panels.
Why does my AFCI breaker keep tripping after outages?
AFCI (arc fault) breakers are sensitive to current patterns. Some inrush patterns can register as arc faults to AFCI detection circuitry, causing nuisance trips. Older AFCI products (2010-2014) had more nuisance trip issues than current generation. Solutions: replace with current-generation AFCI products, or reduce inrush at the breaker by load-shedding before restoration. Discuss with electrician if AFCI nuisance trips are recurring.
Could this damage my electronics permanently?
Repeated voltage spikes during restorations can degrade electronics over time. Severe single spikes (rare but possible during major grid events) can fail electronics immediately. Whole-home surge protection mitigates ongoing risk. Sensitive electronics on UPS (uninterruptible power supplies — battery-backed power conditioning) get additional protection for the most critical equipment. Most homes don't need UPS on everything; computers, networking, and home theater are common candidates.
How do you handle pricing — flat fee or hourly?
Both, depending on scope. Routine service calls and predictable scope (panel replacement, EV charger install, transfer switch install, fixture replacement) are flat-fee quoted up front. Diagnostic visits and emergency scope are hourly because we don't know what we'll find. Either way, you get a written quote before work starts on anything significant, and we don't proceed beyond the quote without your sign-off.
How quickly can you schedule?
Depends on scope and season. Emergency dispatch: same-day across Marin County (1-3 hours business hours, 1-4 hours after-hours). Same-day standard service: 3-6 hours from call when capacity allows; otherwise next business day. Scheduled service work: 1-3 weeks typical. Larger projects requiring permits and PG&E coordination: 4-12 weeks depending on scope. We're upfront about timeline at the quote stage.
What warranty do you offer on work?
Our standard residential warranty: 2 years on labor, manufacturer warranty on parts (varies by product — typically 1-10 years). Major installs (panels, generators, EV chargers) often have longer manufacturer warranties (5-10 years). If there's an issue with our work in the warranty period, we come back and fix it at no cost. We also stand behind work past warranty — repeat customers and referrals matter more than a transactional fix.
Are you licensed and insured?
Yes. California State License Board C-10 Electrical Contractor #989290, in good standing. Carry general liability insurance and workers' compensation insurance as required by California law. Bondable on projects requiring it. Happy to provide proof of insurance to clients or property managers on request. License lookup: cslb.ca.gov.
Same-day diagnostic visit in Marin.
We bring the right test gear and most common parts. Single-visit repair on roughly 80% of diagnostics.