Upgrading your home's electrical service to 200 amps can provide more power for large appliances, air conditioners, and home additions. However, hiring an electrician to install a new 200 amp panel and run wiring can cost thousands of dollars. With some electrical knowledge and the right materials, I was able to upgrade my 100 amp panel to 200 amps on a budget.
Understanding 200 Amp Electrical Service
Before wiring a new 200 amp panel, it's important to understand what 200 amp service provides:
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200 amps refers to the size of the main breaker and service wires that connect the home to utility power lines. This determines the total amount of electricity available to the home.
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A 200 amp panel has a main breaker rated for 200 amps and multiple branch circuit breakers to distribute power through the home.
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200 amp service can support larger appliances like central AC, electric dryers and stoves, tankless water heaters, and EV chargers. It provides capacity for home additions and remodeling.
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Upgrading allows replacing 100 amp or 150 amp panels that are overloaded and often trip breakers.
Shopping List for Materials and Cost Savings
For DIY electrical projects, materials can add up quickly. Here are budget tips for a 200 amp panel upgrade:
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Buy a basic 42 space, 200 amp panel for around $150. Avoid overpriced "smart panels".
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Shop for breakers online in bulk for savings instead of paying retail markup. Budget $150-250 for a set of 20-30 common breakers.
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Use #1/0 aluminum SER cable for 200 amp service conductors. About $150 for a 100' 4-wire feeder. Avoid more costly copper.
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Look for a basic 200 amp meter socket combo unit for around $120. Don't overpay for fancy digital displays.
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Shop classified ads and Craigslist for used wire spools and breakers. Be selective about quality.
Overall budget: $500-$800 compared to $2000+ hiring an electrician. Shop sales and buy wholesale.
Step-by-Step Installation Guide
With the right materials, upgrading a panel is a DIY project for a skilled homeowner. Follow these key steps:
Shut Off Power and Remove Old Panel
Safety first! Turn off the main breaker and all circuits. Verify power is off with a voltage tester. Then:
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Remove the cover plate and disconnect all wiring from the old panel and meter.
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Take out the main feeder lines. Remove the old panel and meter/main box from the wall.
Install New Meter Socket and 200 Amp Panel
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First, mount the new meter socket as a replacement for the old main service box. Follow manufacturer instructions.
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Feed the service entrance wires from the utility lines through to the new meter.
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Next, mount the new 200 amp panel next to the meter socket. Leave a 1/4" gap between them.
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Connect the feeder wires from the meter into the main lugs or breaker.
Run New 200 Amp Service Feeder to Panel
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For the new 200 amp feeder, run 4 wires - two hots, a neutral, and ground wire. Use #1/0 aluminum SER cable.
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Connect the feeder neutral and ground wires to the bar terminals in the panel.
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Land the two 200 amp hot wires into the main breaker.
Transfer and Organize Circuit Wiring
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Move the existing branch circuits from the old panel into the new panel one by one.
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Organize wiring cleanly and label all circuits. Leave room for expansion.
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Install new breakers as needed to replace damaged old ones or fill spaces.
Close Up and Restore Power
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Once wiring is complete, close up the panel and meter socket. Make sure covers are secure.
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With panels off, restore power at the main service disconnect.
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Carefully switch the main breaker on and test that all circuits are powered properly.
Conclusion
With proper planning and materials, upgrading home electrical service to 200 amps can be a DIY project that saves thousands of dollars. Make safety the top priority, research local codes, and consult an electrician if unsure about any wiring steps. A 200 amp panel provides flexibility for expanding home electrical needs for decades to come.