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
- Circuits and wiring: New circuits, wire sizes and breaker loads
- Outlets, switches and lights: Outlets, GFCIs, switches and light fixtures
- EV chargers: Home EV charging: circuits, panels and permits
- Generators and solar: Backup power, transfer switches and solar
- Smoke and CO alarms: Where alarms go, hardwired or battery, and chirping
- Plumbing rough-in: Supply and drain layouts, pipe sizes and venting
- Water heaters: Tank, tankless and heat pump water heaters
- Leaks and clogs: Leaking pipes, slow drains and clogs
- Gas lines and appliances: Gas piping, ranges, dryers and smells
- Wells and water quality: Wells, softeners, filters and water pressure
- Heating and cooling: Sizing furnaces, AC and heat for a house or addition
- Heat pumps and mini-splits: Ducted and ductless heat pumps
- Ducts and airflow: Hot and cold rooms, duct sizes and returns
- Boilers and radiators: Hot water and steam heat
- Smart home and low voltage: Thermostats, cameras, doorbells and network wiring
- Every group
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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