How to Upgrade an Electrical Panel to 200-Amp Service (Part 2) | This Old House

Master electrician Scott Caron installs a new panel to complete a service upgrade.

Watch part one here:

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Steps:
1. Use diagonal-cutting pliers to sever all wires inside existing electrical panel.
2. Unscrew and remove old electrical panel from the wall.
3. Screw a large ¾-inch-thick plywood panel to the wall for mounting the new electrical panel. 4. Feed the SE cable through the top of the new electrical panel, then screw the panel to the plywood. Use a torpedo level to ensure the panel is level.
5. Make all the electrical connections inside the electrical panel.
6. Feed the house circuits into the panel, making sure each cable passes through a cable connector.
7. Connect the bare-copper ground wires and white-insulated wires to the ground and neutral bar inside the panel.
8. Plug new circuit breakers into the bus bar.
9. Run the main ground wire from the bottom of the electrical panel to the copper water main.
10. Have the utility company reconnect the electrical cables to the exterior of the house.
11. Label each breaker with the correct house circuit.

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How to Upgrade an Electrical Panel to 200-Amp Service (Part 2) | This Old House

5 Comments

  1. Should make a More in-depth on being More detailed even if you have to make 5-6-7 videos BE MORE DETAILED when helping the home owner this why we look at your videos Not a 5 min video

  2. The wire from the meterbase going into the house should have used an insulated neutral, not an equipment grounding conductor. The cable would have had 2 insulated current carrying conductors, an insulated grinded conductor( neutral) and the bare stranded wires terminated to a chair type lug fastened to the metal meter enclosure with a tapped hole and a green bonding screw. Then the aluminum stranded would be fastened under the lug. Another observation is the chain of command to get the power reconnected. How is it you can call out the power company to just come out and reconnect to the service drop? Don’t you have to call the authority having jurisdiction (inspector) to come out and inspect your installation and if it passes he makes the call to the power company to reconnect? Things must be different on your area. ” We don’t need no stinking permits!”

  3. The cable coming in is wrong it needs to be a 4 conductor cable coming from the switch outside.

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