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Panels and service upgrades

Panel swaps, 100 to 200 amp upgrades and subpanels. Ask with your Sheet attached: homeowners who’ve done it and verified pros answer, and anyone can read it.

Systems · 01Before you ask

Before you ask

The panel’s brand and size now, what you’re adding, and a photo of the panel label.

  • Attach your Sheet so people see your sizes and the math.
  • Your town is enough. Never your address; check photos for house numbers and plates.
  • Is it safe? A safety question here goes to pros verified in electrical work, unless you pick another trade. Only they can call it safe or unsafe.
Systems · 02Panel or service upgrade

Panel or service upgrade

100 A to 200 A service: 4/0 AWG Al conductors, a 40-space panel, 20 breakers and the grounding (2 rods).

What people get wrong:

  • A meter base the utility won’t accept. Each utility has an approved list; the wrong socket means a second disconnect day.
  • Sizing from the panel on sale. The service size comes from the load calculation, not from what’s in stock.
  • Loose aluminum lugs. Under-torqued aluminum terminations overheat: torque to the label and use the compound where the lug calls for it.

The worked example, every line's math and the code notes · Your own sizes in the app

Systems · 03More in Systems

More in Systems

Systems · 04How the community works

How the community works

  • Open to read from anywhere, no account needed.
  • Sign in with your email to ask, answer and vote. No password.
  • The best answers rise: votes, “worked for me” and a solved mark. Verified pros carry a badge.

Questions? Write to support@studsheet.com.

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