Half My House Lost Power — What’s Going On?
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A Portland Homeowner’s Guide to Sudden Partial Power Loss
1. A Tripped Breaker (Best Case Scenario)
Sometimes it’s simple.
A breaker can trip and look like it’s still “on.” It may sit slightly out of alignment in the middle
position.
What to try:
1. Go to your electrical panel.
2. Firmly turn the breaker fully OFF.
3. Then turn it back ON.
If power restores and stays on — great.
If it trips again? That signals a deeper issue.
2. A GFCI Outlet Has Tripped
In many homes, one GFCI outlet controls several downstream outlets.
So if:
- Bathroom outlets stopped working
- Garage outlets are dead
- Kitchen counter plugs won’t work
You may simply need to press the RESET button on a GFCI outlet nearby.
Check:
- Bathrooms
- Garage
- Exterior outlets
- Laundry room
Still nothing? Keep reading.
3. One Leg of Power Is Out (More Serious)
This is where things get more serious.
Homes in Portland, Beaverton, and Hillsboro receive 240 volts split into two 120-volt “legs.”
If one leg fails:
- Half your breakers lose power
- Lights in certain rooms go out
- Some appliances work, others don’t
- 240V appliances (range, dryer) may stop working
This can be caused by:
- A failed main breaker
- A damaged bus bar
- A loose service connection
- A utility supply issue
⚠ This is not DIY territory. Working inside a panel can be dangerous.
If you suspect this issue, call a licensed electrician immediately.
4. Loose Neutral (Urgent)
A loose neutral connection can cause:
- Flickering lights
- Bright lights in one room / dim in another
- Electronics acting strange
- Burning smell
This can damage appliances quickly.
If lights are unusually bright or dim — turn off major appliances and call for service.
5. Older Electrical Panels in Portland Homes
Many older homes in Portland still have outdated panels like:
- Federal Pacific
- Zinsco
- Pushmatic
- Fuse panels
These panels can fail unpredictably and may not trip properly when needed.
If your home was built before the 1990s and you’re experiencing partial power loss, it may be
time for a professional panel evaluation.
Is Half-House Power Loss Dangerous?
Sometimes yes.
If it’s just a tripped breaker, it’s minor.
If it’s a service leg failure or loose neutral, it can damage appliances and create fire risk.
Here’s a quick rule:
✔ Safe to check breakers and GFCIs
❌ Not safe to open your panel or test service connections
When to Call an Electrician in Portland
Call immediately if:
- Half your panel has no power
- Breakers won’t reset
- Lights flicker or change brightness
- You smell burning
- Your neighbors still have power but you don’t
At Smiley Electric, Inc., we provide electrical troubleshooting and emergency service
throughout:
- Portland
- Beaverton
- Hillsboro
- Cedar Mill
- Bethany
- Raleigh Hills
Our diagnostic service includes:
- Full panel inspection
- Voltage testing
- Clear explanation of the issue
- Upfront pricing before repairs
- Safe, code-compliant work
Oregon CCB #227116
Licensed & Insured
Frequently Asked Questions
Why did half my house lose power but no breakers tripped?
This often indicates a lost service leg or loose connection inside the panel.
Can PGE cause half my house to lose power?
Yes — sometimes the issue is on the utility side. We can determine that quickly.
Should I call the power company first? If your neighbors have power and only half your house i
If your neighbors have power and only half your house is affected, call an electrician first.
Need Help Right Now?
If half your house lost power in Portland, Beaverton, or Hillsboro — we can diagnose it quickly
and safely.
Don’t ignore it.
Electrical systems don’t fail quietly.
Call Smiley Electric, Inc. today to schedule professional troubleshooting.