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Volta Electric
Mon–Sat · Site visits by arrangement (408) 555-0147

Project · Cherry Chase, Sunnyvale

Cherry Chase panel upgrade

1958 ranch on a 100A Zinsco panel with no spare spaces. The owners were adding a heat pump and an induction range. We replaced the service with a 200A meter-main combo, re-fed the house, added surge protection and left four spare spaces for the EV that comes next.

Service100A → 200A
On site1 day
Start to final4 weeks
Circuits24
A finished 200-amp panel with labeled breakers and neatly bent conduit on a garage wall.

What was included

  • Load calc covering heat pump, induction range and a future EV
  • PG&E service application and meter release
  • New 200A meter-main, 24-space, copper bus
  • Grounding electrode system: two rods plus water bond
  • Whole-home surge protective device
  • Every breaker labeled by room after a trace
“The breaker directory alone was worth it. We finally know which switch does what.”
Dana M.Cherry Chase
§ 02

See how the work progresses.

Eight stages from a similar job, start to finish. Concept imagery.

  1. Stage 1 of 8: Existing panel01 · Existing panel
  2. Stage 2 of 8: Protected02 · Protected
  3. Stage 3 of 8: Service disconnected03 · Service disconnected
  4. Stage 4 of 8: Old panel out04 · Old panel out
  5. Stage 5 of 8: New panel set05 · New panel set
  6. Stage 6 of 8: Circuits landed06 · Circuits landed
  7. Stage 7 of 8: Testing07 · Testing
  8. Stage 8 of 8: Finished08 · Finished
§ 03

How it ran.

  1. Week 0

    Site walk

    Zinsco panel photographed, loads measured, scope written the same afternoon.

  2. Week 1–3

    PG&E

    Application filed day one; release came in week three.

  3. Install day

    Power off 8–4

    Old panel out, new combo set, grounding redone, generator on the fridge.

  4. Week 4

    Final

    City inspection passed first visit. Directory handed over.

Planning a panel upgrade?

Read the service page or book a walk. Every scope is written the same day.

Book a site walk About panel upgrades
§ 04

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