Zinsco Panel Removal — New Panel, Stucco Patch & Underground Feeder

Another Zinsco off the grid. This one was embedded in an exterior stucco wall — which added a layer of work to the panel swap because pulling the old enclosure left a rough opening in the stucco that had to be patched and finished before the job was done.

The before photo shows the old setup: the Zinsco panel door open, original meter beside it, breakers exposed. Zinsco panels have been flagged by electricians and insurers for decades because the breakers are prone to failing to trip under fault conditions. That's the one job a breaker has — interrupting the circuit when something goes wrong — and these panels don't do it reliably. Getting them out is never optional once the work starts.

This job also included an underground feeder run along the side of the house. The trench photo shows the conduit laid and ready to backfill — that's the service conductors going from the utility connection point to the new panel location. Underground runs like this require a minimum burial depth depending on conduit type, and the trench has to be inspected and signed off before backfill.

The new panel and meter combo was set into the rough opening cut in the stucco, landed, and inspected. After the utility re-energized, the team patched the stucco around the enclosure. The finished exterior shows what a panel swap in a stucco wall should look like — clean, flush, with no visible damage to the wall surface.

The caption from the original post says it well: "Amazing job on the stucco patch and another Zinsco panel off the grid." That's two wins on one job.