⚡ Electrical Safety

Top 7 Signs Your Electrical Panel Needs an Upgrade

When to upgrade from 100A to 200A service and why it matters for your home's safety and modern power demands.

7 min read
Licensed Electricians
Updated Dec 2024

Your electrical panel is the heart of your home's power system. An outdated or overloaded panel isn't just inconvenient—it's a serious fire hazard. Here are the 7 warning signs that it's time for an upgrade.

Did You Know?

The National Fire Protection Association reports that electrical failures or malfunctions were the second leading cause of U.S. home fires from 2014-2018, causing an estimated $1.3 billion in property damage annually.

1.Frequent Circuit Breaker Trips

If you're constantly resetting tripped breakers, your panel is telling you it can't handle your home's electrical load. This is especially common when running multiple appliances simultaneously.

What's Normal vs. What's a Problem:

  • Normal: Occasional trip from a power surge or overloaded circuit
  • Problem: Tripping multiple times per week or when using standard appliances

2.Your Panel is Over 25 Years Old

Electrical panels built before 2000 weren't designed for today's electrical demands. Modern homes use 3x more electricity than homes from the 1980s due to computers, smart devices, electric vehicles, and high-efficiency appliances.

Dangerous Panel Brands

These brands are known fire hazards and should be replaced immediately:

  • • Federal Pacific Electric (FPE) panels
  • • Zinsco/Sylvania panels
  • • Pushmatic panels
  • • Fuse boxes (pre-1960s)

3.Flickering or Dimming Lights

When lights dim or flicker as appliances turn on (like the AC, refrigerator, or microwave), your panel is struggling to distribute power properly. This indicates insufficient amperage capacity.

4.Burning Smell or Scorch Marks

THIS IS AN EMERGENCY. Any burning smell, discoloration, or scorch marks around your panel means wiring is overheating. Turn off your main breaker and call an electrician immediately.

Immediate Action Required

Don't wait if you notice:
• Burning plastic smell near the panel
• Hot to the touch panel cover
• Visible sparks or arcing
• Melted wires or breakers

5.You're Adding Major Appliances or an EV Charger

Planning to install central AC, a hot tub, electric vehicle charger, or remodel your kitchen? These require significant power. A 100-amp panel typically can't support these additions safely.

Typical Power Requirements:

  • Level 2 EV Charger 40-50 amps
  • Central Air Conditioning 20-60 amps
  • Electric Range 40-50 amps
  • Hot Tub 40-60 amps

A 100A panel typically has only 50-60A available for new circuits after accounting for existing loads.

6.Using Extension Cords Regularly

Relying on extension cords and power strips because you don't have enough outlets is a sign your home's electrical system is outdated. An upgraded panel allows you to safely add more circuits and outlets.

7.Rust, Corrosion, or Moisture in the Panel

Water and electricity don't mix. Rust or corrosion indicates moisture infiltration, which compromises safety and functionality. In coastal San Diego, salt air can accelerate panel deterioration.

100A vs 200A Panel: What's the Difference?

100-Amp Panel

Best for:

  • • Small homes (under 1,500 sq ft)
  • • No major appliances
  • • Gas heating and cooking
  • • Minimal modern electronics

200-Amp Panel

Best for:

  • • Most modern homes
  • • Central AC, electric range
  • • EV charger capability
  • • Home office, smart devices
  • • Future expansion needs

Electrical Panel Upgrade Cost in San Diego

  • 100A to 200A panel upgrade $2,500-$4,000
  • Includes: New panel, labor, permit, inspection
  • Subpanel installation $800-$1,500
  • Timeline 1-2 days

Potential Savings & Benefits

  • • Lower homeowner's insurance premiums (safer electrical system)
  • • Increased home value and marketability
  • • Reduced fire risk and liability
  • • Ability to add modern conveniences without rewiring

Need an Electrical Panel Upgrade?

Our licensed electricians provide safe, code-compliant panel upgrades throughout San Diego County. Get a free assessment and quote today.

Licensed • Insured • 5-Year Warranty on All Panel Upgrades