Load management (EVEMS)
RVE DCC-10 (Thermolec)
The code-recognized way to add a full EV circuit to a maxed-out panel: whole-home CTs shed the charger above 80% of service capacity, so it's excluded from the load calculation.
Best for
Adding 240 V charging when the load calculation says no
Specifications
| Service | Panels up to 200 A |
|---|---|
| EV breaker | Built in — 30 / 40 / 50 / 60 A models |
| Operation | Sheds EVSE above 80% of main capacity; restores after 15 min below |
| Code basis | NEC 625.42 energy management — charger exempt from load calc |
| Enclosure | NEMA 3R (indoor/outdoor) |
| Listing | CSA and UL listed |
Specifications as published by RVE. Confirm against the current spec sheet before buying — manufacturers revise models without renaming them.
What's good
- Solves the 100-amp-panel problem for roughly a tenth of a service upgrade's cost
- Fully automatic and invisible in daily life — shedding only happens at genuine peak
- Works with any brand of EVSE downstream
What's not
- Electrician install — this is panel work, not an accessory you plug in
- During a shed event the car simply pauses; if you charge at peak hours daily, size the service honestly instead
Our verdict
When the load calculation fails, most homeowners hear 'panel upgrade.' This is the NEC's other answer, and inspectors know it. If your charger-brand's built-in load management doesn't satisfy your AHJ, the DCC-10 is the device that does.
Compare with the alternatives
- NeoCharge Smart Splitter (NEMA 14-50) — adding ev charging to an existing 240 v outlet without new wiring
- Lectron J1772 to Tesla (NACS) Adapter — tesla drivers using j1772 home and public chargers
- Lectron Tesla (NACS) to J1772 Adapter — non-tesla evs using tesla wall and destination chargers
- Splitvolt Splitter Switch (NEMA 10-30 / 14-30) — sharing a 30 a dryer outlet with metered, breaker-protected switching
- Lectron J1772 Nozzle Holster Dock — finishing any charger install properly