Selma, TX Electrical Panel & Service Upgrades — 100A to 200A

Estimated Read Time: 12 minutes

If your lights dim when the AC kicks on or breakers trip too often, it may be time for an upgrade 100 amp to 200 amp service. This guide explains what a 200 amp service includes, when you truly need it, how permitting and utility coordination work in Texas, and what it costs. You will see clear steps, safety tips, and how to plan for EV chargers, new HVAC, and future remodels. Limited‑time bonus: qualifying upgrades include a free whole‑home surge protector.

Why Upgrade From 100A To 200A

Most older homes were built with 60 to 100 amps. Today’s homes run central HVAC, EV chargers, induction ranges, tankless water heaters, and smart devices. A 200 amp service provides headroom so your system does not run at the edge.

Benefits you will notice:

1. Fewer nuisance trips and better voltage stability under load.
2. Capacity for major additions like a Level 2 EV charger or new heat pump.
3. Improved resale value and easier permitting for remodels.
4. Opportunity to add panel safety features and whole‑home surge protection.

Hard facts:

• National Electrical Code Article 220 sets the load calculation method to size service accurately. It does not require 200A, but many modern Texas homes pencil out near or above 100A after demand factors.
• A typical Level 2 EV charger requires a 240V circuit on a 40 to 60 amp breaker, which can strain a 100A service if HVAC runs at the same time.

"Daniel C. Was amazing and professional. Made sure everything was up to code and identified what needed to be worked on."

Signs You Need A Service Upgrade

Watch for these triggers. One or more is enough to schedule an evaluation:

1. Breakers trip regularly or will not reset.
2. Panel is warm to the touch or smells like burning.
3. New high‑demand appliances, hot tub, or an EV charger are planned.
4. You still have a fuse box or a 100A panel.
5. Lights dim when large appliances start.
6. You are planning a remodel or addition that adds circuits.

Safety note: Heat, buzzing, or any burning odor at the panel means stop and call an electrician now.

"Excellent Service, under warranty. Installed 2 surge protectors & addition to compressor. Awesome job. Thanks!"

What A 200A Service Includes

A true 200A upgrade is more than swapping a main breaker. It is a coordinated set of parts and approvals that work together.

Core components:

1. 200A meter base and service entrance conductors sized per NEC and local utility specs.
2. New or upgraded main breaker panel rated for 200A with correct bus rating.
3. Correct grounding electrode system and bonding conductors.
4. New service disconnect if required by local code.
5. Labeling, arc‑fault and ground‑fault protection where required for new circuits.

Enhancements to consider the same day:

• Whole‑home surge protection at the main panel.
• Dedicated circuits for appliances to prevent overloads.
• Energy monitoring to track usage by circuit.

"Raul did a great job and will be back for upgrade instal. Fantastic job. Thanks Elmer's."

The Upgrade Process In Texas: Permits, Utility, and Inspections

Every home is different, so we begin with a site‑specific evaluation and load calculation. Here is the path most Texas homeowners follow.

1. In‑home evaluation
   • Inspect existing panel, meter base, grounding, and service drop.
   • Perform a NEC Article 220 load calculation to size service.
2. Proposal and options
   • Present best‑fit solutions and any add‑ons like surge protection.
   • Provide a fixed, written price and timeline.
3. Permitting and utility coordination
   • Pull the required city or county electrical permit.
   • Coordinate with CPS Energy in San Antonio or CenterPoint Energy in Houston when a disconnect or service lateral change is needed.
4. Installation day
   • Power safely disconnected, old equipment removed, new meter base and panel installed, grounding modernized.
   • Circuits landed, labeling completed, torque verified to manufacturer specs.
5. Inspection and power restoration
   • City inspection is scheduled. Once approved, the utility reconnects service.
6. Post‑upgrade walkthrough
   • Test GFCI and AFCI where applicable, confirm voltage and loads, review warranty and maintenance.

Hard fact: Many Texas jurisdictions require a permit and inspection for service changes. Working without a permit can delay utility reconnection and affect insurance.

"Jonathon came out on a Friday night, checked the system, and had me cooling off by 11:15 AM the next day. True professional."

Cost Breakdown And What Drives Price

Service upgrades vary because homes and utilities vary. Here is what influences your investment.

1. Meter base and service conductors
   • Overhead vs underground service affects trenching and utility work.
2. Panel location and accessibility
   • Long conductor runs or relocation add labor and materials.
3. Grounding and bonding corrections
   • Older homes often need new grounding electrodes, bonding for gas and water lines, and panel isolation.
4. Permit and utility fees
   • City permits and utility coordination can add fixed costs.
5. Add‑ons and future‑proofing
   • EV charger circuits, surge protection, and energy monitoring are cost‑effective during a panel change.

Financing options can spread costs over time. Many homeowners combine upgrades with HVAC or solar‑ready planning to avoid doing the work twice.

Timeline: How Long Will You Be Without Power?

Most panel and service upgrades are completed in one working day once the permit is active and utility coordination is set. Expect 4 to 8 hours of power down time for a straightforward overhead service. Underground service or meter relocation can take longer due to trenching and utility schedules. We stock common meter bases, breakers, and panels to reduce wait times and restore power the same day when possible.

Safety, Code, and Compliance Essentials

Service upgrades are life‑safety projects. Your electrician should document compliance and give you clear paperwork.

What to expect from a code‑compliant job:

1. Load calculation per NEC Article 220 kept on file.
2. Correct service equipment rating and short‑circuit current rating.
3. Grounding electrode system sized and bonded correctly.
4. GFCI and AFCI protection applied to new or modified branch circuits per current code.
5. Labeling that matches the panel schedule and device locations.

Texas detail: Electrical work must be performed by licensed professionals. Elmer’s Home Services operates under TDLR #40048. Ask to see licensing and insurance before work begins.

Planning For EV Chargers, HVAC, And Future Loads

A 200A service is the right foundation for the next decade of upgrades.

Common additions after a 200A upgrade:

1. EV charging
   • Most Level 2 chargers draw 32 to 48 amps at 240V. Install a dedicated circuit and consider load management.
2. HVAC upgrades
   • High‑efficiency heat pumps can share demand with cooking or laundry. A larger service avoids nuisance trips.
3. Kitchen and laundry remodels
   • Induction ranges and electric dryers need dedicated 240V circuits.
4. Outdoor living
   • Pools, spas, and patio kitchens benefit from capacity and modern protection.

Pairing these projects with a panel upgrade reduces duplicate labor and permits.

Choosing The Right Electrician For A 200A Upgrade

The lowest quote is not always the lowest risk. Compare based on proof.

Checklist to vet your contractor:

1. Licensing verified with the Texas Department of Licensing and Regulation.
2. Written scope listing meter base, conductors, grounding, permits, and inspection.
3. Utility coordination included for CPS Energy or CenterPoint Energy if required.
4. Manufacturer‑listed equipment with matching ratings and warranties.
5. Clear timeline, clean‑work policy, and satisfaction guarantee in writing.

Ask for photos of similar upgrades and request a panel schedule before and after.

Maintenance And Protection After The Upgrade

A safe service keeps working when the weather turns and the grid is unstable.

Best practices:

1. Whole‑home surge protection to shield electronics from utility and lightning surges.
2. Annual electrical safety inspection to check torque, signs of heat, and breaker performance.
3. Keep the panel area clear for three feet and dry to prevent corrosion.
4. Log any trips and call if breakers feel hot or smell odd.

Members of our Pink Combo Club receive one home electrical safety inspection valued at $299, priority scheduling, and member‑only savings. Energy monitoring can alert you to abnormal loads before they become failures.

Special Offer: Free Surge Protection With Your Upgrade

Save $795 today. Get a free whole‑home surge protector with the purchase of any electrical panel or full service upgrade. Use code PANEL+SURGE before 2026‑03‑04. Restrictions may apply. Call for details. This is the smartest time to add protection, since labor overlaps with your panel work.

Frequently Asked Questions

Do I always need 200 amps?

Not always. The correct size depends on a NEC Article 220 load calculation. Many modern homes with HVAC, EV charging, and electric cooking benefit from 200A, but some smaller homes calculate safely below that.

How long does a 200A upgrade take?

Most projects finish in one day once permits and utility coordination are in place. Expect 4 to 8 hours without power for typical overhead services. Underground service may extend the schedule.

Will the utility need to be involved?

Yes if the meter, service drop, or lateral needs changes. We coordinate with CPS Energy in San Antonio and CenterPoint Energy in Houston so power is safely disconnected and restored.

Can I add an EV charger later?

Yes. Many homeowners future‑proof the panel now and install the dedicated EV circuit later. A 200A service prevents overloads when HVAC and charging run together.

Is financing available for a service upgrade?

Yes. We offer flexible payment plans. Many clients pair financing with the free surge protector promo to protect electronics without delaying the upgrade.

In Summary

Upgrading from 100A to 200A gives you safer, steadier power and room for EVs, new HVAC, and remodels. Our licensed team handles permits, calculations, and utility coordination for San Antonio, Houston, and nearby cities. Ready to plan your 100 to 200 amp service upgrade in San Antonio or New Braunfels? We will size it right and protect your home.

Schedule Your 200A Upgrade Today

• Call now: (210) 489-1389
• Book online: https://elmershomeservices.com/
• Limited‑time bonus: Free whole‑home surge protector with any panel or full service upgrade ($795 value). Use code PANEL+SURGE before 2026‑03‑04.

Prefer a quick check first? Ask about our Pink Combo Club. Members receive a complimentary electrical safety inspection valued at $299 and priority care for Electrical, HVAC, and Plumbing.

About Elmer's Home Services

Elmer’s Home Services is a local, family‑owned team serving San Antonio, Houston, and nearby cities. Our licensed and insured electricians are trained weekly and back their work with a 100% Satisfaction Guarantee. Texas Electrical Contractor TDLR #40048. We coordinate permits and utility work, offer flexible financing, and stand behind thousands of 5‑star reviews. Members of our Pink Combo Club receive priority service and savings, including a complimentary electrical safety inspection.