How long does a panel upgrade take?

Physical panel installation usually takes 6 to 8 hours on installation day. Power is typically shut off in the morning and restored by afternoon upon inspector clearance.

How do I know if I need a 200-amp panel?

If your home was built before 1990 and has a 100A panel, adding an EV charger, modern HVAC, hot tub, or kitchen remodel will almost certainly require a 200A upgrade.

Sky Electric Service

Electrical Panel Upgrades (100A to 200A/400A)

Older 100-amp panels cannot handle modern power demands like Level 2 EV chargers, central heat pumps, induction cooktops, or commercial equipment. Sky Electric performs full 200-amp and 400-amp panel upgrades with utility coordination and city permitting.

Up to 200A/400A Heavy-Duty Electrical Service Expansion

Full Utility Coordination (SCE / Local Utilities)

City Permitting & Inspection Guarantee

Whole-Home Surge Protection Included

Request Service Call (714) 369-7002

Home Service

Request Electrical Panel Upgrades (100A to 200A/400A)

Get prompt scheduling or an upfront estimate.

Warning Signs

When Do You Need This Service?

Panel uses outdated Zinsco, Federal Pacific, or push-matic breakers

Breakers trip frequently when using multiple appliances

Planning to install EV charger, solar, pool heater, or central AC

Panel box rust, buzzing noises, or burn marks near breakers

Our Process

Clear, code-compliant steps for safe execution.

Step 1

Site Inspection & Load Calc

Evaluating existing electrical demand and calculating target panel capacity.

Step 2

Utility & City Permits

Handling all permit submittals with Southern California Edison / city departments.

Step 3

Panel Installation Day

Safe utility disconnect, installing modern panel, clean wire routing, and grounding rod upgrades.

Step 4

City Inspection & Power Restored

Passing municipal inspection and restoring utility power seamlessly.

FAQ

Common Questions

Related Electrical Services

Emergency Electrical Services

Fast 24/7 emergency response for power outages, burning smells, sparking outlets, and dangerous electrical hazards.

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Electrical Troubleshooting & Repairs

Expert diagnostic pinpointing for flickering lights, dead outlets, tripping breakers, and hidden electrical faults.

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EV Charger Installation (Level 2 & Commercial Fleet)

Dedicated high-speed Tesla, NACS, and J1772 Level 2 EV charger installations for homes and business fleets.

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Available In These Service Areas

Rancho Cucamonga, CA Alta Loma, CA Claremont, CA Upland, CA Fontana, CA Chino Hills, CA View All →

Need Help with Electrical Panel Upgrades (100A to 200A/400A)?

Tell us what you need and let Sky Electric take it from here.

Request Service Call (714) 369-7002