What is the 320A Residential Service?

The EK320RO2 Hydel Self-Contained Meter Socket is a BC Hydro-approved meter base designed for 120/240V single-phase 3-wire 320A services. It includes an integrated bypass and supports installations where more power is needed than what traditional 200A services can handle but without the full jump to commercial-grade 400A service.

Electricians are noticing that the jump from 200A to 400A is a big one, and the associated costs, equipment requirements, and utility approval processes can be excessive for residential applications. The 320A option fills that gap but it’s still so new that many contractors and even inspectors are only beginning to encounter it.

Key Observations from the Field

1. There’s Confusion About Equipment Availability

“All I ever have installed was 200, so this is kind of new to me… I don’t think I ever saw a 320 panel or even a disconnect.”
— Brian Deck, Contractor

Currently, while 320A meter sockets like the Hydel EK320RO2 are available, compatible load centers or 320A-rated panels are still rare. Most contractors end up splitting the load across two panels (e.g., 200A + 100A), bypassing the need for a traditional 400A service and its associated CT meter setups.

2. There’s Debate on Whether It’s Actually a 400A Service in Disguise

“320A × 125% = 400A — your wiring, panels, etc. are based on 400A.”
— Fahim Ahmad, Electrician

Some argue that the 320A rating is just a roundabout path to a 400A infrastructure. However, others note that Hydro utilities like BC Hydro are formally recognizing 320A as its own service size, much like 200A or 100A, and are provisioning accordingly with updated standards (see BC Hydro ES54 S1-02).

3. It’s Becoming More Common Due to Modern Electrical Loads

“With electric car chargers, hot tubs, pool heaters, and electric heating, 200A is starting to be stretched thin.”
— Sebastien Charette, Quebec Installer

Installers in Quebec and BC confirm that 320A is emerging as a sweet spot for homes with increasing energy needs but without full commercial load requirements.

4. Pricing and Market Adoption Are Still Growing Pains

Contractors expressed frustration at limited product availability and inflated pricing for the new meter bases. As one mentioned, “Prices will come down eventually. Doesn’t help my client now though.”

So… Do You Need a Disconnect?

There is also a fair bit of confusion around disconnect requirements.

Some pointed out that a main disconnect is not required, especially if feeding multiple panels directly from the meter socket. However, others noted that adding a fused disconnect can provide flexibility—especially if future upgrades, solar, or generator tie-ins are planned.

Ultimately, your local electrical inspector will have the final say, so always check with your authority having jurisdiction (AHJ).

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Final Thoughts: 320A is Real, and It’s Here to Stay

Whether you’re upgrading a large home, planning for EV charging, or trying to future-proof your installation, the EK320RO2 Hydel 320A meter socket offers a practical new middle ground between 200A and 400A services.

While not every supplier carries them yet and while it may take time before compatible panels are commonplace contractors across Canada are taking note. If you’re an electrician in BC, Alberta, or Quebec, it’s worth familiarizing yourself with this product and keeping it in mind for upcoming jobs.

Shop the EK320RO2 Hydel 320A Meter Socket
BC Hydro Approved | With Bypass | Ready for Modern Residential Loads