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Phoenix, Arizona
When a house has outgrown 200 amps, a 400A service is a bigger project than a panel swap: larger equipment, often engineered plans, and more utility review. We handle all of it.
Overview
Most Phoenix homes are fine on 200 amps. A 400A service makes sense when the load calculation says the house has truly outgrown it: several A/C systems, a pool and spa, a casita, more than one EV, or a switch to all-electric appliances.
We do the load calculation before recommending anything. Sometimes a sub-panel or EV load management solves it for much less, and we'll tell you when that's the case.
Get a free quoteSRP requires shop drawings for every service rated 400A and above, and for 320A equipment that isn't on its pre-approved list. A residential “400A” service usually uses a meter rated 320A continuous (the CL320 class). We prepare and submit the drawings, and SRP has to approve the meter location before the work.
When a job replaces or relocates the meter, APS requires its own inspection and approval before it re-energizes the service, on top of the city inspection. We file the request with load information, schedule the disconnect, and coordinate both inspections. How the SRP and APS process works →
On Olney Ave in Phoenix the property had outgrown its service. We installed a new 400A meter-main with an exterior emergency disconnect, trenched and installed a new underground feeder, and set a 200A sub-panel for the added load. It was permitted and inspected, the utility set and released the meter, and the trench was backfilled clean. See the full Olney Ave job →
Read 200A vs. 400A: do you need a bigger service? and what a panel or service upgrade costs in Phoenix. Or call us and we'll run the load calculation for your house.
Recent work
Our own photos, our own jobs.
A property that had outgrown its service. We installed a new 400A meter-main with an exterior emergency disconnect, trenched and installed a new underground feeder, and set a 200A sub-panel to serve the added load — all permitted, inspected, and backfilled clean.
ENERGIZED
AFTER
SUB-PANEL
IN PROGRESSBefore you hire anyone
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FAQ
Usually not. Most homes can add one Level 2 charger on a 200A service. The load calculation tells you for sure.
Often, yes. SRP requires shop drawings for services 400A and above. We handle both.
Residential 400A services usually use a meter rated 320A continuous (CL320). It's the standard way utilities meter large homes.
The work itself is usually a short window with the power off. The longer part is utility review and scheduling, so we file early and give you a date once the utility confirms it.
Yes. B and D Electric holds Arizona ROC license 361086, carries $1M/$2M general liability insurance, and is bonded through RLI Surety. We'll email you the certificate of insurance on request.
No. Estimates are free and given in writing after we've actually looked at the job.
Same-day for emergencies in most of the Valley, and usually within a couple of days for scheduled work. Call and we'll tell you honestly.
Tell us what's going on and we'll give you a straight answer and a free written estimate. No pressure, no upsell.