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How to Know When Your Electrical Panel Needs an Upgrade

Is your panel struggling to meet modern demands? Learn the warning signs — flickering lights, tripped breakers, and outdated fuse boxes — that mean it's time for an upgrade.

By Diley S. Merino Electric Team May 12, 2025 5 min read
How to Know When Your Electrical Panel Needs an Upgrade

Electrical panels don't last forever — and an outdated or undersized panel can be a serious safety hazard. Here's how to know when it's time to call a licensed electrician for a panel upgrade.

Signs Your Panel Is Overloaded or Outdated

Your electrical panel is the heart of your home's electrical system. When it can't keep up with demand, the first signs are often subtle — lights that flicker when you run the microwave, a breaker that trips every time you use the hairdryer, or an outlet that stopped working for no clear reason.

Older panels — especially those built before 1990 — may use fuse-based systems or have a total capacity below 100 amps. Today's homes with modern appliances, HVAC systems, EV chargers, and home offices routinely require 200 amps or more. If your home is still running on a 100-amp service, it's likely undersized for how you live today.

Top Warning Signs You Need a Panel Upgrade

Look out for these red flags that indicate your panel may be failing or undersized:

  • Breakers trip repeatedly, even under normal loads
  • Lights dim or flicker when appliances turn on
  • You smell burning near the electrical panel
  • Your panel uses fuses instead of circuit breakers

What Happens During a Panel Upgrade?

A licensed electrician will first evaluate your current panel, service entrance, and household electrical load. From there, they'll recommend the right amperage upgrade — typically 200 amps for most homes, or 400 amps for larger properties with significant electrical demand.

The upgrade involves replacing the old panel with a new load center, reconnecting all circuits, and verifying compliance with California electrical code. Most residential panel upgrades take a single day. Your electrician will pull the required permits and coordinate the utility disconnect and reconnect as needed.

When to Call Merino Electric

If you're experiencing any of the warning signs above, don't wait. An overloaded or aging panel is a fire and safety risk. Merino Electric serves homeowners across San Diego County with fast, professional panel upgrades backed by our 100% satisfaction guarantee.

An upgraded panel protects your home, supports modern appliances, and adds real value to your property. Don't put it off — schedule your free panel evaluation with Merino Electric today.

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