Red flags at a glance
- Fuse boxes and some Federal Pacific or Zinsco panels deserve a close look by an electrician.
- Aluminum branch wiring was used from 1965 to the mid-1970s and can overheat at connections.
- Two-prong outlets usually mean no ground wire.
- A home inspector flags problems. A licensed electrician tells you what it takes to fix them.
Why a home's age matters for wiring
Electrical codes change as we learn what fails. A home built in 1970 was wired for lamps, a TV and a toaster. Today the same home may run an EV charger, a hot tub and a home office.
Red flag 1: the electrical panel
- Fuse boxes: often too small for modern use, and easy to over-fuse.
- Federal Pacific Stab-Lok panels: have a long history of breakers that may not trip.
- Zinsco panels: known for breakers that can fuse to the bus bar.
- Rust, scorch marks or double-tapped breakers inside any panel.
A Panel Upgrade is one of the most common fixes for older homes. It's worth getting a price before you make an offer final.
Red flag 2: the wiring itself
Aluminum branch wiring
The U.S. Consumer Product Safety Commission says aluminum wiring was used in homes from 1965 to the mid-1970s. The danger is at the connections, where it can overheat. Look for "AL" or "ALUMINUM" printed on cables in the attic or basement.
The fix is usually not a full rewire. Approved connectors can make the connections safe. Learn more about Aluminum Wiring Repair.
Cloth-covered and very old wiring
Very old homes may have cloth-wrapped wire or even knob-and-tube. The insulation can turn brittle. Partial or full replacement may be needed.
For homes with many problems, Home Rewiring can be the safest long-term choice.
Red flag 3: outlets, switches and grounding
- Two-prong outlets usually mean there is no ground wire.
- Three-prong outlets on old wiring may not be grounded at all. A simple tester tells you.
- No GFCIs in kitchens, baths or garages.
- Warm cover plates or loose outlets that won't hold a plug.
Our guide to GFCI vs AFCI Protection explains what newer homes have that older ones often don't.
Red flag 4: the service mast and meter
Look at where power enters the home. A leaning mast, rusted meter base or cracked weatherhead needs attention. In Rocky Mountain Power areas, the homeowner owns the mast and meter base, so the buyer inherits the repair.
We repair and replace these through Service Mast and Meter Base Repair.
Questions to ask before you close
- How old is the panel, and has it ever been replaced?
- Is there aluminum wiring? Has it been repaired with approved connectors?
- Were remodels done with permits?
- Are there GFCIs in wet areas and working smoke alarms on each level?
- What is the service size? Read 100 Amp vs 200 Amp Service if you plan to add big appliances.
A home inspector flags issues. A licensed electrician can tell you what they cost to fix. We offer Electrical Safety Inspection for buyers in Utah Valley.