For homeowners
Your panel trips when the AC and dryer run together. We measure the load and tell you if 200 amps is the right size.
- Breakers trip when AC starts
- Adding an EV charger
- Old fuse box in the garage
100 to 200 amp service upgrade Upland CA for older homes
A 100 to 200 amp service upgrade Upland CA replaces your undersized panel, meter main, and service mast so your home can run modern loads without nuisance tripping. We work on 1950s tract homes near Historic Downtown Upland and newer builds in The Colonies. If your breakers trip when the AC and dryer run together, an electrical service upgrade Upland CA is the fix, and we pull the city permit before we start.
Load calculationPermit pulledPanel labeled- Meter pulled firstUtility disconnect before we cut
- Lugs torquedEvery termination to spec
- Circuits mappedLabeled before we cut
- Photos takenPanel and grounding documented
What is included in the service upgrade
A 100 to 200 amp service upgrade is a defined scope: new service equipment, new grounding, and a code-correct panel. Here is what we include on a standard Upland residential job, and what we quote separately if your home needs it.
200-amp panel and meter main
We install a new 200-amp panel and, when needed, a new meter main sized for the service. Square D, Eaton, and Siemens gear is standard. Every lug is torqued to the manufacturer spec with a torque screwdriver, and the panel is labeled circuit by circuit.
New grounding electrode system
Older Upland homes often have a grounding system that no longer meets NEC 2020/2023. We install new grounding electrodes and bond the water and gas lines so the service is code-correct and the inspector signs off on the first walkthrough.
AFCI and GFCI protection
We install AFCI breakers on the circuits the code requires and GFCI protection in kitchens, baths, garages, and outdoors. If your home has no GFCI protection today, this is the part of the upgrade that makes the biggest everyday difference.
City permit and inspection
The city electrical permit and the inspection are part of the job, not an add-on. We pull the permit, meet the inspector, and give you the signed inspection record so you have proof the work was done to code.
Circuit labeling and walkthrough
Every breaker gets a printed label, and we walk the panel with you at the end. You will know which breaker feeds the kitchen, the garage, and the bedroom circuits before we leave. A voltage tester confirms every circuit is live and correct.
Homes and businesses.
The approach is the same for a home and a business. What changes is the access, the schedule and who needs the paperwork.
For property managers
Insurers flag Federal Pacific and Zinsco panels on four-point inspections. We replace the panel and document the install for your file.
- Insurer flagged the panel
- Tenant needs more capacity
- Meter main damaged by heat
What a 100 to 200 amp service upgrade Upland CA involves
A plain-language look at what 100 to 200 Amp Service Upgrade involves and when it is needed.
See how it worksA 100 to 200 amp service upgrade Upland CA is the electrical work that replaces a 100-amp service with a 200-amp service: new meter main, new 200-amp panel, new service mast, new grounding, and a load calculation that proves the new size is correct. We pull the city electrical permit, coordinate the utility disconnect, and bring the work up to NEC 2020/2023 compliance and California Electrical Code. Most homes in Upland were built with 100-amp service and now carry double the electrical load they were designed for.
The warning signs are hard to miss. Breakers trip when the dryer and microwave run together. The panel is warm to the touch. You have a Federal Pacific or Zinsco panel that insurers flag. Or you are adding a heat pump, EV charger, or rooftop solar and the load calculation comes up short. A service upgrade Upland CA electrician can measure your actual demand with a clamp meter and tell you in one visit whether 200 amps is enough or whether you should step up to a 200 to 400 amp service upgrade.
A 200-amp service gives your home the capacity its modern loads actually require.
- What it is
- Replacing a 100-amp service with a 200-amp panel, meter main, and grounding.
- When you need it
- Breakers trip under normal load, or you are adding EV, solar, or a heat pump.
- What to expect
- Permit first, then a four to six hour install, inspection, and same-day reconnect.
How our 100 to 200 amp service upgrade works
We handle the permit, the utility coordination, and the inspection. You get a clear schedule and a panel that passes on the first walkthrough.
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Load calculation
We start with a full load calculation on your home: square footage, major appliances, HVAC, EV charger, and any planned additions. A clamp meter reading shows what you actually draw today. That number tells us whether 200 amps is the right size or whether you need a 200 to 400 amp service upgrade. Takes about 45 minutes on site.
- Load calculation
- Panel check
- Written scope
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Permit and utility
We pull the city electrical permit for Upland and file the utility disconnect request. You do not chase paperwork. Permits for a residential service upgrade in San Bernardino County usually clear in three to seven business days, and we schedule the swap once the disconnect window is confirmed.
- Permit filed
- Utility request
- Date confirmed
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Disconnect and demo
On install day, the utility pulls the meter and we remove the old panel, meter main, and service mast. We protect the floor and wall, label every circuit before we cut, and set the new 200-amp panel in place. Most homes are without power for four to six hours.
- Meter pulled
- Old panel out
- New panel set
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Wiring and grounding
We land the new service conductors, install the grounding electrode system, and torque every lug with a torque screwdriver to the manufacturer spec. AFCI and GFCI breakers go in where the code requires them, and we add a whole-home surge protective device if you want one. Copper and aluminum terminations get the correct paste and connector.
- Grounding built
- Breakers landed
- Lugs torqued
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Inspection and power on
The city inspector signs off, the utility reconnects the meter, and we walk the panel with you. Every breaker is labeled, the cover is on, and we show you which circuits feed what. If anything reads off on the voltage tester, we fix it before we leave the driveway.
- Inspection passed
- Meter back
- Panel walkthrough
Tools and methods we use on every upgrade
Move across a circle, or focus it and press Enter, for an illustrative thermal view of the photograph.
Clamp meter
We measure actual current draw on the service and individual circuits during the load calculation. That reading tells us whether 200 amps is correct or whether you need to go bigger.
Torque screwdriver
Every lug in the new panel and meter main is torqued to the manufacturer spec. Loose terminations are one of the most common causes of panel failure and hot spots.
Voltage tester
We verify every circuit is live and correct before we close the panel. A final voltage check on each breaker confirms the labeling matches what is actually fed.
Fish tape and conduit bender
For service mast and meter main work, we run new conductors through conduit and bend the conduit to fit the mast. Clean conduit work is part of passing the utility reconnect.
Insulated gloves and cable cutters
Service conductors are cut and landed with insulated gloves and rated cable cutters. Safety on a live service is not optional, and OSHA compliance is standard on every job.
Thermal views are illustrative, generated from the photographs.
Methods
Circuit breaker finder
On older Upland homes with unlabeled panels, we use a circuit breaker finder to map every circuit before we cut. That mapping becomes the new panel label.
NEC 2020/2023 load calculation
We calculate the load using the NEC method: square footage, major appliances, HVAC, EV charger, and any planned additions. The result determines whether 200 amps is correct. The calculation is part of the permit package, and the inspector reviews it.
California Electrical Code compliance
California amends the NEC, and we work to the current California Electrical Code on every Upland job. That covers grounding, AFCI and GFCI requirements, and the service equipment ratings the city inspector checks.
Utility disconnect coordination
We file the disconnect request with the utility and schedule the swap inside the approved window. That keeps the power outage to a few hours instead of a full day, and it keeps the reconnect on the same day in most cases.
Title 24 energy standards
Where Title 24 applies to the work, we follow it. That includes circuit controls and the energy-related requirements that come up when a service upgrade is part of a larger remodel or addition.
When Upland homeowners upgrade their service
1950s tract home
A 1950s tract home near Historic Downtown Upland still has its original 100-amp panel and a fuse box in the garage.
We convert the fuse box to a breaker panel, run the load calculation, and upgrade the main service to 200 amps with new grounding and AFCI protection. The permit is pulled the same week.
Outcome: The home runs modern appliances without tripping, the garage has a code-correct subpanel, and the panel passes inspection on the first visit.
Zinsco insurance fix
A homeowner in The Colonies adds a Level 2 EV charger and rooftop solar to a home with a full 100-amp panel.
We upgrade to a 200-amp service with a dedicated EV breaker and a solar backfeed breaker, and we install a whole-home surge protective device at the main panel.
Outcome: The charger and solar run on their own breakers, the panel has spare capacity, and the system passes the utility and city inspection.
EV and solar ready
A rental property in North Upland has a Zinsco panel that the insurer flagged during a four-point inspection.
We replace the Zinsco panel with an Eaton 200-amp panel, correct the grounding electrode system, and add GFCI protection in the kitchen and baths.
Outcome: The property clears the insurance inspection, the tenant keeps power, and the owner gets photos and the inspection record for their file.
Mast and meter main
A San Antonio Heights home with a long service drop has a cracked service mast and a meter main that the utility will not reconnect.
We replace the mast and meter main, upgrade the service to 200 amps, and coordinate the utility disconnect and reconnect so the outage is limited to one day.
Outcome: The utility reconnects the meter, the new hardware is rated for 200 amps, and the home has power back the same afternoon.
How a 100 to 200 amp upgrade runs in Upland
Upland's housing stock drives most of the service upgrade work we do. The tract homes built in the 1950s and 1960s around Historic Downtown Upland and College Heights were wired for 100 amps and a fraction of the electrical load a family runs today. Add a heat pump, an EV charger, or a rooftop solar system and the service runs out of capacity.
The summer heat matters too: when the AC runs hard from June through September, an undersized panel trips more often, and the service mast and meter main take more thermal stress. We pull the city electrical permit for every job, work to NEC 2020/2023 and California Electrical Code, and coordinate the utility disconnect so most homes are back on the same day.
- Historic Downtown Upland: Older homes with 100-amp service and original fuse boxes. We convert the fuse box and upgrade the main service in one visit, which is often the first step before a kitchen or ADU remodel.
- The Colonies: Newer homes adding EV chargers and solar. The load calculation usually supports 200 amps, and we leave dedicated breaker space for the charger and backfeed.
- San Antonio Heights: Larger lots with long service drops and exposed masts. We check the mast and meter main for wind and heat damage before the upgrade, since the utility will not reconnect a damaged mast.
- North Upland: Rental and multi-family properties where insurers flag Federal Pacific and Zinsco panels. We replace the panel, correct the grounding, and document the install for the owner.
- Summer heat loads the AC and the service at the same time: From June through September, an undersized 100-amp service trips more often. The upgrade to 200 amps gives the AC its own capacity and stops the nuisance tripping.
- Older service masts and meter mains show heat and wind wear: Upland's inland heat and seasonal wind can crack a mast or corrode a meter main. We inspect both during the estimate and replace them as part of the upgrade so the utility will reconnect.
We walk the panel and meter main with you. We protect the floor and wall before cutting. We label every circuit and walk you through it.
From problem to finished result.
1950s tract home, 100 amps to 200 amps
Before: A 1,400 square foot home near Historic Downtown Upland had its original 100-amp panel, a fuse box in the garage, and no GFCI protection. The AC and dryer could not run together without tripping the main.
After: We installed a 200-amp Square D panel, replaced the meter main, converted the fuse box to a breaker subpanel, and added AFCI and GFCI breakers. The home now runs the AC, dryer, and oven at once, and the panel has six spare slots.
Keep the area around the panel clear, test the GFCI breakers monthly, and have the panel inspected every few years. The labeling we install makes it easy to identify any circuit that trips.
Zinsco replacement for an insurance inspection
Before: A rental property in North Upland had a Zinsco panel that the insurer flagged during a four-point inspection. The grounding system was undersized and there was no GFCI protection in the kitchen or baths.
After: We replaced the Zinsco panel with an Eaton 200-amp panel, rebuilt the grounding electrode system, and installed GFCI breakers in the kitchen, baths, and garage. The property cleared the insurance inspection and the panel passed the city inspection.
Press the test button on each GFCI breaker every month, and keep the panel cover closed. If a breaker trips repeatedly, call us before resetting it a third time.
EV and solar ready in The Colonies
Before: A homeowner in The Colonies had a full 100-amp panel with every breaker slot used. They wanted a Level 2 EV charger and rooftop solar, but the load calculation came up short and there was no space for a backfeed breaker.
After: We upgraded the service to 200 amps, installed a dedicated 50-amp EV breaker and a solar backfeed breaker, and added a whole-home surge protective device. The charger and solar both passed inspection, and the panel has room for a future heat pump.
Check the EV breaker for warmth once a month, keep the solar backfeed breaker labeled, and have the surge protective device indicator light checked annually.
Problems a 100 to 200 amp upgrade fixes in Upland
Most calls we get are one of these four problems. Each one points to a service that is undersized, outdated, or damaged, and each one has a code-correct fix.
- Nuisance trippingBreakers trip when major appliances run togetherA 100-amp service cannot carry the AC, dryer, oven, and microwave at once. You reset breakers, lose power mid-task, and put wear on motors and electronics every time it happens. We run a load calculation, confirm the service is undersized, and upgrade to a 200-amp panel with the correct breaker sizing. After the swap, the same appliances run together without tripping, and the new panel has spare slots for future loads.
- Federal Pacific or ZinscoFederal Pacific or Zinsco panel in the houseThese panels have a documented failure rate and many insurers will not renew a policy with one installed. A failed panel can also mean a fire risk behind the dead front. We replace the panel with modern Square D or Eaton gear, correct the grounding, and install AFCI and GFCI breakers where the code requires them. You get photos of the install and the inspection record for your insurer.
- No EV or solar roomNo room for an EV charger or solar backfeedA 100-amp panel with every slot filled cannot take a 40 to 50 amp EV charger or a solar backfeed breaker. Homeowners end up delaying the project or paying for a second electrical visit later. We size the new 200-amp panel with dedicated space for the charger and solar backfeed, install the breakers, and label them. If your load calculation shows you need more, we quote a 200 to 400 amp service upgrade instead.
- Damaged mast or meterDamaged service mast or meter mainUpland's heat and wind load can crack a mast or corrode a meter main. The utility will refuse to reconnect the meter until it is repaired, which leaves you without power. We replace the service mast and meter main as part of the upgrade, sized for 200 amps and installed to NEC 2020/2023. The utility reconnects the same day in most cases, and the new hardware is rated for the load.
Why Upland homeowners upgrade to 200 amps
A 200-amp service runs your home's loads without tripping.
No more nuisance tripping
When your 100-amp panel trips every time the AC kicks on, the problem is amperage, not the breaker. A 200 amp service upgrade Upland, California gives you double the capacity, so the dryer, oven, and air conditioner can run at the same time without shutting down a circuit. We verify the new load with a clamp meter before we close the panel.
Room for EV and solar
Adding a Level 2 EV charger pulls 40 to 50 amps on its own. Pair that with rooftop solar and a 100-amp service runs out of space fast. Upgrading to 200 amps gives you dedicated breaker slots for the charger, the solar backfeed, and a whole-home surge protective device, all labeled and torque-checked to spec.
Insurance and inspection ready
Federal Pacific and Zinsco panels fail at a higher rate than modern gear, and many carriers will not renew a policy with one in place. Replacing it with a Square D or Eaton 200-amp panel, properly grounded and labeled, clears the four-point inspection and gives your insurer what they ask for. We document the install with photos.
Code-correct grounding and AFCI/GFCI
Older Upland homes often have no AFCI or GFCI protection and a grounding system that no longer meets NEC 2020/2023. A 100 to 200 amp panel upgrade near me Upland job includes new grounding electrodes, AFCI breakers on bedroom circuits, GFCI protection in kitchens and baths, and Title 24 energy standards where they apply.
What a written scope covers.
What a written scope covers and what shapes it. Prices are set by the business after the first look.
Included
- 200-amp panel and meter main
- New grounding electrode system
- AFCI and GFCI breakers
- City permit and inspection
- Circuit labeling and walkthrough
- Utility disconnect coordination
Depends on
- Meter main and mast condition
- Panel location and wire run
- Grounding system condition
- AFCI and GFCI scope
- Permit and utility fees
- Conduit routing through finished walls
What you receive
Clear records you can keep and share.
Load calc
Written calculation for the permit
Panel label
Printed circuit directory
Photo record
Panel and grounding photos
Inspection record
Signed city inspection sticker
What determines your service size
The load calculation, not the square footage alone, decides whether 200 amps is enough.
100 amps
Original service in most 1950s Upland homes
- No EV or solar room
- Trips under heavy load
- Often no GFCI protection
200 amps
Standard upgrade for a modern single-family home
- Room for EV charger
- Solar backfeed breaker space
- AFCI and GFCI protection
400 amps
For large homes with pool, shop, or ADU
- Two 200-amp panels
- Dedicated subpanel feeds
- Higher utility service rating
What we work with
- Square D
- Eaton
- Siemens
- AFCI breakers
- GFCI breakers
- Copper wire
- Conduit
- Panel labels
Service ZIP codes.
A list like this tells people straight away whether you cover their street. Not listed? Call and ask: it only takes a minute.
- 91784
- 91786
- 91785
Towns we serve.
Based in Upland and covering the places around it. Pick one for local details.
- Historic Downtown Upland
- The Colonies
- Upland Hills
- San Antonio Heights
- College Heights
- Los Olivos
- McCarthy Park
- Magnolia Park
- North Upland
- Upland Palms
- Claremont
- Rancho Cucamonga
What Upland homeowners say
Frequently Asked Questions
A straightforward panel-only swap sits at the low end. If the mast is damaged or the grounding system needs a full rebuild, expect the higher end. We quote the full scope before we pull the permit.
Yes. The city of Upland requires an electrical permit for any service upgrade, and the work must be inspected before the utility will reconnect the meter. We pull the permit for you, usually three to seven business days, and meet the inspector on site. Skipping the permit can void your insurance coverage and create a problem when you sell the house.
The on-site work is typically four to six hours, so most homes have power back the same day. Add three to seven business days for the permit and one to two weeks for the utility disconnect and reconnect window. If we are also replacing the meter main or service mast, plan on a full day. We give you the schedule in writing before we start.
Yes, and it is one of the most common reasons we get called. A 200-amp panel gives you the busbar capacity for a solar backfeed breaker plus room for an EV charger later. We run the load calculation with the solar output included, confirm the panel busbar rating, and install a dedicated backfeed breaker so the system passes inspection the first time.
Related Services
Other services from the same team.
- 200 to 400 Amp Service UpgradeBuilt for larger homes adding EV chargers, solar, or a detached ADU. A 400 amp service splits into two 200 amp panels so you keep room for future circuits. We size the service mast and meter main to match, and coordinate the utility reconnect.
- Subpanel InstallationA subpanel in the garage or at the back of the house shortens circuit runs and clears space in a crowded main panel. We feed it with correctly sized copper, install a separate neutral and ground bar, and label every breaker so the next electrician can read it.
- Fuse Box to Breaker Panel ConversionOld fuse boxes in Historic Downtown Upland homes cannot take AFCI or GFCI protection and often have no main disconnect. We pull the old box, install a modern breaker panel, and re-circuit the house with new breakers and labeled runs. Most conversions finish in one day.
Get your 100 to 200 amp service upgrade Upland CA scheduled
Call (909) 850-3163 and we will run the load calculation, quote the job, and pull the permit. One call gets you a straight answer on what your home needs.
Talk to a Panel Tech
Call or email with your address and what the panel is doing, and we will tell you what the job likely involves. We answer calls Monday through Friday, 8am to 6pm, and return messages from Upland, Rancho Cucamonga, and Ontario the same business day. For dead panels and burning smells, say so on the call.
- Phone
(909) 850-3163 - Email
[email protected] - Address
Upland, California