Austin Electrical Panel & Service Upgrades — 100A to 200A Safely

Estimated Read Time: 10 minutes

Lights dim when the AC kicks on? Planning an EV charger or new appliances? Here’s how to upgrade electrical service from 100 to 200 amps safely, without surprises. In this guide, we outline code must‑dos, costs, permits, and the exact steps our licensed Texas electricians take. Want help now? Ask about our free in‑home panel upgrade consultation before it expires.

What upgrading from 100 to 200 amps really means

A service upgrade increases how much electricity your home can safely draw. Moving from 100 to 200 amps boosts available capacity for HVAC, EV chargers, remodels, and future circuits. It also refreshes aging components that can overheat or fail.

A modern 200 amp panel is the current standard for most homes. Larger homes with high demand sometimes require 400 amp service. The goal is not just a bigger panel. It is a complete, code‑compliant system that protects people and property while delivering steady power.

At A Team Home Services, licensed electricians evaluate the panel’s age, condition, and load. We determine if a partial swap, a new main breaker, or a full service upgrade is the best path. We then plan the work so it passes inspection the first time.

Signs your existing 100 amp service is undersized or unsafe

Upgrades are often triggered by performance or safety red flags. Common signs include:

Breakers that trip often when large appliances run.
Flickering or dimming lights during AC or dryer start‑up.
Warm, buzzing, or rusty panels and breakers.
Limited open spaces in the panel for new circuits.
Two wires under a single breaker or known recalled gear.
Plans for EV charging, hot tubs, or major remodels.

These symptoms do not always mean you need a full service change. Our team performs a load assessment first. Sometimes a main breaker upgrade, selective rewiring, or adding a dedicated 240V circuit solves the issue. When a full upgrade is warranted, we design it to meet current code.

Safety and code basics in Texas

Your upgrade must meet the National Electrical Code and local amendments. Two safety requirements affect many projects:

GFCI protection is required in bathrooms, kitchens, garages, laundry areas, and outdoors per NEC 210.8.
AFCI protection is required in many living areas per NEC 210.12.

We also recommend whole‑home surge protection for today’s electronics and variable‑speed HVAC systems. A proper grounding and bonding system is essential to clear faults and protect from surges. Our electricians verify grounding electrodes, bonding jumpers, and service conductor sizes during the upgrade.

In Central Texas, utilities and jurisdictions require permits and inspections for service changes. We handle permitting, coordinate with the utility for disconnect and reconnect, and stay on site for inspection.

Step‑by‑step: How pros upgrade service safely

Here is the typical workflow our team follows to move from 100 to 200 amps:

Consultation and load assessment
- Document existing service size, feeder and panel rating, and available spaces.
- Calculate future loads for EVs, HVAC, appliances, and additions.
Design and materials
- Specify a 200 amp panel or meter‑main combo with copper or aluminum feeders sized to code.
- Plan grounded circuits and required GFCI/AFCI devices.
Permitting and scheduling
- File permits, coordinate with the utility for a safe disconnect, and schedule inspection.
Safety prep and temporary power
- Protect circuits, label branch circuits, and set up safe work areas.
Service equipment upgrade
- Replace the meter base or meter‑main if needed.
- Install the 200 amp panel, main breaker, new service conductors, and grounding.
Rewire, labeling, and torque verification
- Land branch circuits, replace worn breakers, add AFCI/GFCI where required, and label.
- Verify all terminations to manufacturer torque specs.
Testing, surge protection, and inspection
- Install whole‑home surge protection if selected.
- Test circuits, verify polarity and trip functions, and pass inspection.
Utility reconnect and homeowner walkthrough
- Confirm correct voltage and breaker operation.
- Review new capacity, open spaces, and maintenance tips.

This process is designed to reduce downtime and ensure a first‑pass inspection.

Load calculations, EV charging, and future‑proofing

The smartest time to prepare for future use is during your upgrade. We complete a panel load calculation to prevent nuisance trips and bottlenecks. If your plan includes an EV, we install a dedicated 240V circuit. For tight capacity, we can recommend load management so you avoid oversizing service.

Future‑proofing ideas to consider:

Reserve spaces and conduit for an EV charger or second charger.
Upgrade large appliance circuits to grounded, dedicated runs.
Add AFCI and GFCI protection where code requires or where safety benefits are highest.
Install a Type 2 whole‑home surge protector.

With a 200 amp panel, most homes gain the headroom needed for efficient HVAC, smart homes, and outdoor living upgrades. Our team also handles generator interlocks and transfer equipment that must be planned at the panel level.

Equipment and materials that make the difference

A durable, code‑listed panel with a properly rated main breaker is the heart of the upgrade. We size service entrance conductors and feeders to match the new rating. Breakers must be listed for the panel and installed to the maker’s torque specs.

During the upgrade, we often:

Replace aged or undersized service conductors.
Add new grounding electrodes and bonds.
Install AFCI and GFCI breakers per NEC.
Run new grounded branch circuits to key areas.

We also evaluate surge protection, outdoor receptacle covers, and weatherproofing at the meter. Small details here prevent corrosion and nuisance issues later.

Permits, inspections, and utility coordination around Austin

Local authorities require a permit for a service upgrade. After rough and final inspections, the utility reconnects power. This protects you and ensures your insurance company sees a documented, code‑compliant change.

Our team handles:

Permit applications and scheduling.
Safe utility disconnect and reconnect.
On‑site inspection support and corrections if needed.

Homeowners in Austin, Round Rock, Georgetown, Cedar Park, and nearby cities benefit from our knowledge of local processes. We plan your cutover to minimize downtime. Many upgrades are completed within a single workday once permits are approved.

Cost factors, timelines, and how to prepare

Every home is different, so cost is driven by scope. Typical factors include:

Panel location, accessibility, and working clearance.
Need for a new meter base or service mast.
Conductor upgrades from the utility point to the panel.
AFCI/GFCI requirements and breaker count.
Rewiring needs or additional grounded circuits.
Surge protection and optional equipment.

Most service upgrades take one day on site once permits and materials are ready. You can help by clearing 3 feet of space in front of the panel, securing pets, and planning for a brief power outage during cutover. We provide a walkthrough so you know which circuits feed key appliances.

DIY risks and common pitfalls to avoid

Working on service equipment without training is dangerous. Typical DIY missteps include undersized conductors, missing bonding jumpers, mixed breaker brands, and mislabeled circuits. These errors lead to failed inspections, overheating, or shock hazards.

A licensed electrician brings the right test instruments and manufacturer documentation. We verify fault current ratings, torque every termination, and confirm AFCI/GFCI operation. Our process reduces risk and protects your investment.

Maintenance and support after the upgrade

Electrical systems benefit from periodic checks. We offer inspections, repairs, and maintenance after your project. Common support items include tightening terminations, verifying surge device status lights, and testing AFCI and GFCI trips.

If you add an EV charger or remodel later, we re‑evaluate your load and recommend any changes. Our goal is a safe, efficient system that grows with your needs.

Special Offer: Free Panel Upgrade Consultation

Save on planning and get clarity fast. Schedule a free in‑home consultation for electrical panel upgrades and breaker assessments. Offer valid through 2026‑04‑01. Call (737) 306‑0078 or request service at https://callateamtoday.com/ to claim your free visit.

What Homeowners Are Saying

"Jake came to my house give me an estimate for upgrading the electrical panel. He arrived on time, was knowledgeable, answered my questions, explained the processes involved in the job, and gave me options."
–Austin homeowner

"Can’t thank them enough for all the work they did replacing my main panel and running a new line to my garage. Cheers yall, I’ll be coming back to you guys every time"
–Georgetown homeowner

"Really happy with the quick turn around and they easily beat competitor quotes to get a 14-50 plug installed for our new EV Charger. ... He even went above and beyond to answer my questions about the panel and made a recommendation to upgrade some older breakers in the future. Highly highly recommend A-Team!"
–Round Rock homeowner

"Jason was punctual and professional. Provided a lot of insight on what need to be done and what recommendations he had. Will be using again in the future for panel upgrades."
–Cedar Park homeowner

Frequently Asked Questions

Do I always need a full service change to get 200 amps?

Not always. Some homes only need a new main breaker, meter‑main, or conductors. We perform a load calculation and inspection to confirm the right scope before recommending a full change.

How long will my power be off during the upgrade?

Most cutovers are completed the same day. Expect a planned outage during the panel swap and testing. We coordinate with the utility to minimize downtime and restore power quickly.

Will a 200 amp panel cover an EV charger and HVAC?

In most homes, yes. A dedicated 240V EV circuit plus HVAC loads typically fit within a 200 amp service. We verify with a formal load calculation and can add load management if needed.

Do I need GFCI and AFCI breakers after upgrading?

Yes where required by code. GFCI is needed in kitchens, baths, garages, laundry, and outdoors. AFCI is required in many living areas. We specify the correct protection by location.

Is whole‑home surge protection worth it?

Yes. It protects sensitive electronics and variable‑speed HVAC from spikes. We often add a Type 2 surge protector during the panel upgrade for convenience and savings.

Final Takeaway

Upgrading electrical service from 100 to 200 amps boosts safety, capacity, and resale value. In Greater Austin, our licensed team handles the load calculation, permits, panel swap, surge protection, and inspection so you pass the first time. Ready to future‑proof your home for EVs, HVAC, and remodels?

Talk To A Licensed Electrician Today

Call now: (737) 306‑0078
Schedule online: https://callateamtoday.com/
Coupon: Free in‑home panel upgrade consultation through 2026‑04‑01

Book your visit and get a code‑compliant plan to upgrade electrical service from 100 to 200 amps in Austin, Round Rock, Georgetown, Cedar Park, and nearby. Our team will assess your panel, perform a load calculation, and provide clear options the same day.

A Team Home Services is a licensed, safety‑first electrical contractor serving Greater Austin. We deliver compliant work to the latest NEC standards, perform panel load calculations for EV and high‑demand loads, and handle permits and inspections. We are BBB A+ accredited, Google Guaranteed, and known for fast scheduling and competitive quotes. From panel upgrades and surge protection to rewiring and breaker fixes, we provide end‑to‑end service, testing, and support. Your home’s safety and reliability are our top priorities.