Post-war and mid-century — copper supply, aging cast iron stacks, 60 to 100 amp panels, first-generation central air.

What follows is every electrical problem we cover that concentrates in this era of construction. Age does not mean worse — it means a different set of failures.

• Aluminum branch wiring
• Panel full, with tandem breakers doubled up
• Outlets that no longer grip a plug
• Three-prong outlets on two-wire cable
• 100 amp service and a growing load
• Bathroom outlet with no GFCI
• Lights dimming when the air conditioner starts
• Extension cords doing permanent work
• Old smoke alarms with no interconnection

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Written by Jaylan Jones. I Like To Fix earns a referral fee when a call connects to a contractor. See our business-model disclosure.