Estimated Read Time: 12 minutes
Installing or upgrading a main panel is high-stakes work. If you are researching how to install an electrical panel, this step-by-step guide will help you plan safely, understand permits, and avoid costly mistakes. We explain tools, code checkpoints, and when to call a licensed electrician. Want to save on a 200-amp changeout? Keep reading for an active local coupon.
Read This First: Safety, Codes, and When to Call a Pro
Working inside a service panel can be deadly. The service conductors feeding the main lugs can remain live even when breakers are off. If you are not licensed or confident, hire a professional.
Key facts to know before you start:
- NEC 2020 added an emergency disconnect requirement for one- and two-family dwellings in many areas. Confirm with your inspector whether an outdoor service disconnect is required.
- NEC 210.8 and 210.12 expanded GFCI and AFCI protection requirements. Plan your circuits with modern protection from the start.
- Most panels last about 25 years. Frequent trips, burning smells, or heat at the panel are red flags that require attention.
Local insight: In Lafayette and nearby parishes, electrical permits and inspections are typically required for service upgrades. Coordinate with Lafayette Consolidated Government or your local AHJ before purchasing parts. Our team manages permitting, inspector scheduling, and utility coordination for you.
Tools and Materials Checklist
Gather everything before you begin to prevent unsafe shortcuts.
Tools:
- Voltage tester and multimeter
- Insulated screwdrivers and nut drivers
- Torque wrench with manufacturer specs
- Fish tape and cable stapler
- Hammer drill or masonry bits if mounting on block
- Label maker or panel labels
Materials:
- Service-rated panel and matching main breaker
- Approved meter base if upgrading
- Conduit, fittings, and connectors rated for location
- Grounding electrode conductors, clamps, and rods per code
- Neutral and grounding bars as required
- AFCI/GFCI breakers where required
- Correctly sized service entrance cable
- Bonding bushings and locknuts where required
Pro tip: Match the panel brand with its breakers. Mixing brands can be unsafe and may fail inspection.
Choosing the Right Amp Size and Panel Type
Common residential service sizes include 100, 150, 200, and 400 amps. Many upgrades move from 100 amps to 200 amps to support HVAC, EV chargers, and modern appliances.
How to size your service:
- List large loads: HVAC, range, dryer, water heater, EV charger, hot tub.
- Use a load calculation worksheet based on NEC standards.
- Add capacity for future needs such as a workshop or outdoor kitchen.
Panel format options:
- Main breaker panel: Most homes use this style.
- Main lug only panel: Used as a subpanel downstream of a main disconnect.
- Outdoor rated panel: Required in many service locations and for emergency disconnect compliance.
When in doubt, get a professional load calculation. It protects your investment and speeds permit approval.
Permits, Utility Coordination, and Inspection Timeline
A clean install starts with a clean plan.
Steps to line up before work:
- Pull a permit with your local AHJ. Submit panel size, location, and a one-line diagram.
- Schedule utility disconnect and reconnect if the meter must be pulled.
- Verify grounding and bonding methods with the inspector.
- Confirm working clearances: typically 30 inches wide and 36 inches deep in front of the panel.
Inspection milestones:
- Rough-in for service equipment and grounding electrode system.
- Final inspection after labeling, torque, and circuit verification.
Step-by-Step: How to Install a Main Service Panel
This overview is for education. Follow your local code and the panel manufacturer’s instructions.
- Plan the panel location
- Choose a dry, accessible location with required clearances.
- Avoid closets, bathrooms, and areas with corrosive vapors.
- For garages or exterior walls, confirm the correct NEMA rating.
- Mount the backer and panel cabinet
- Set plywood backer on studs if the surface is uneven.
- Mount the panel plumb and level using manufacturer holes.
- Knock out only the openings you need to keep the cabinet sealed.
- Establish grounding and bonding
- Drive ground rods as required, usually two rods 6 feet apart when soil resistance is unknown.
- Bond the water piping system if present and allowed.
- In the service disconnect enclosure, bond the neutral. In subpanels, isolate the neutral and ground.
- Route service conductors
- Install service entrance cable or conduit as approved for your site.
- Protect conductors from sharp edges with connectors and bushings.
- Leave enough conductor length to land on the main breaker lugs.
- Land the main and install branch breakers
- De-energized work only. Coordinate with the utility if required.
- Terminate the neutral and ground conductors on their bars per labeling.
- Install branch breakers sized for the conductors they protect.
- Follow torque specs on all lugs. Use a calibrated torque wrench.
- Label circuits and verify spacing
- Label every circuit clearly. Future maintenance depends on this step.
- Balance loads across phases to reduce nuisance trips and voltage drop.
- Inspect, test, and energize
- Perform a point-to-point visual check for nicked conductors or loose fittings.
- Verify GFCI and AFCI protection where required.
- Call for the inspection. After approval, coordinate the reconnect and energize.
- Test outlets and major loads with a multimeter and a plug-in tester.
Common Mistakes That Fail Inspection
Avoid these issues that slow projects and add cost:
- Mixed breaker brands or counterfeit breakers.
- Double-tapped breakers without an approved device.
- Missing bushing or bonding on metallic raceways.
- Improper neutral-ground bonding in a subpanel.
- Undersized service conductors for the main breaker rating.
- Missing clamps on the grounding electrode conductor.
- No working clearance or poor panel location.
Signs You Need an Upgrade, Not a Repair
If you notice any of these, plan for replacement rather than patchwork:
- Panel over 20 to 25 years old.
- Frequent breaker trips or melted insulation.
- Burning smell or visible scorching.
- Warm or hot panel front.
- Outdated brands with known issues or obsolete parts.
A full changeout can improve safety, increase capacity, and help support new technology like EV charging and smart home systems.
Cost Factors and Ways to Save
Budget depends on your home and scope.
What drives price:
- Panel size: 100 vs 200 vs 400 amps.
- Location changes that require new feeders or conduit.
- Meter base replacement and service mast work.
- Permit, inspection, and utility coordination.
- Adding surge protection, AFCI, or GFCI breakers.
Ways to control costs:
- Combine projects, such as EV charger circuits, during the panel upgrade.
- Provide clear access to the work area.
- Use financing to spread out payments at low or zero interest when available.
- Use active local coupons when upgrading to a 200-amp panel.
Maintenance After Installation
Protect your investment with simple checks:
- Do a visual check twice a year for rust or moisture.
- Keep the area clear for quick access.
- Schedule an electrical safety inspection every one to three years.
- Add whole-home surge protection to protect modern electronics.
If breakers trip often after an upgrade, call for service. It may reveal a load, wiring, or device problem.
DIY vs Pro: Which Path Fits Your Home?
DIY can work for subpanels or minor branch changes when allowed and inspected. Main service equipment is different. It requires permits, utility coordination, and strict code compliance. The risk is serious, and failed inspections cost time and money.
What you gain with a licensed local installer:
- Correct sizing and clean, labeled wiring.
- Fast permits and inspection approvals.
- Workmanship backed by a 100% satisfaction guarantee.
- Compliance with state and local codes the first time.
In Lafayette and surrounding cities, our team delivers same-day help for urgent needs, plus 24/7 emergency service when safety cannot wait.
Add-Ons That Make Panels Safer and Smarter
Consider these upgrades during your changeout:
- Whole-home surge protection at the panel.
- Dedicated circuits for appliances and EV charging.
- AFCI and GFCI coverage where required and recommended.
- Labeling upgrades with a clear circuit directory.
- Outdoor-rated emergency disconnects when required by code.
These choices protect equipment, improve safety, and often reduce nuisance trips.
Real-World Project Flow You Can Expect
Here is how a professional service upgrade often runs:
- Inspection and load calculation to confirm correct panel size.
- Written scope with transparent pricing and financing options.
- Permit filing and utility scheduling.
- Demolition, safe removal, and panel mounting.
- Grounding and bonding verified to code.
- Breaker install, labeling, and torque verification.
- Inspection, energizing, and final walkthrough.
Homeowners appreciate clear communication at each step. You should know what is off, what is live, and when power will return.
When You Should Not Proceed
Stop and call a licensed electrician if you find:
- Aluminum branch wiring without proper devices or antioxidant.
- Water intrusion, corrosion, or severe rust in the cabinet.
- Overheating at lugs or discolored insulation.
- Unknown or undocumented splices near the service entrance.
These conditions can indicate hidden damage that needs expert remediation.
Special Offer for Lafayette Area Homeowners
Special Offer: Save $200 on a Main 200-amp Panel Changeout. Use code PANEL200 before 2026-06-30. Must present coupon at time of service and cannot be combined with other offers. Call (337) 214-0010 or schedule at https://www.traviselectricalservices.com/ to claim your discount today.
What Homeowners Are Saying
"Travis Electrical Services did a great job replacing my electrical panel. I was impressed with the technicians knowledge, as well as their ability to explain to me what they needed to do and why. Their customer service from the first call to following up after has been top notch and I would highly recommend them to anyone."
–Karley G., Panel Replacement
"Gavin and Kyle did a great job replacing our panel and meter. They were very professional and courteous. They knew what they were doing and talking about pricing was very reasonable for the professional work that was done."
–Olivia M., Panel and Meter Upgrade
"Chris and Thomas did a great job replacing our electrical panel."
–Cheryl H., Electrical Panel Replacement
"A awsome job done by Travis Electrical Service.they came out and changed my breaker box. .they did it a small amount of time,and everything in my home now works"
–Glynn S., Breaker Box Changeout
Frequently Asked Questions
Do I need a permit to install a new electrical panel?
In most Louisiana jurisdictions, yes. Your local AHJ typically requires a permit and inspection for service upgrades. Always confirm before starting work.
What size panel should I choose for my home?
Many homes upgrade to 200 amps to support HVAC, EV charging, and modern appliances. A load calculation is the right way to size your service.
How long does a panel changeout take?
Many single-family upgrades are completed in one day after permits and utility scheduling. Complex relocations or meter work can take longer.
Can I reuse my old breakers in a new panel?
Only if they are listed and approved for the new panel. Mixing brands or unlisted parts can fail inspection and create hazards.
What is the difference between a main panel and a subpanel?
The main panel contains the service disconnect and has bonded neutrals and grounds. A subpanel is fed from the main and keeps neutrals isolated from grounds.
Final Takeaway
Installing an electrical panel requires careful planning, permits, and strict code compliance. If you want a safe, clean upgrade in Lafayette or nearby cities, choose a licensed pro who does it right the first time. For how to install an electrical panel with less stress and a stronger warranty, call us today.
Ready to Upgrade? Call, Click, or Save Today
- Call: (337) 214-0010
- Schedule: https://www.traviselectricalservices.com/
- Coupon: Save $200 on a Main 200-amp Panel Changeout. Use code PANEL200 before 2026-06-30. Must present coupon at time of service and cannot be combined with other offers.
We serve Lafayette, New Iberia, Youngsville, Broussard, Carencro, Scott, Breaux Bridge, Rayne, Abbeville, and Saint Martinville with licensed, insured electricians and a 100% satisfaction guarantee.
About Travis' Electrical Services of Lafayette
Travis' Electrical Services of Lafayette is a local, family-owned team serving Acadiana. We are fully licensed, bonded, and insured, with over 25 years of experience. Our background-checked, drug-tested technicians follow Louisiana and NEC codes. Homeowners trust our transparent pricing, 100% satisfaction guarantee, and same-day availability. We offer financing options as low as 0% for approved credit. We know Lafayette’s humidity, storms, and permitting process, and we build safe, long-lasting solutions that pass inspection the first time.
