NEMA 240V outlets for home mining: amperage, the maximum CONTINUOUS wattage under the NEC/CEC 80% rule, and what each circuit can power. Miners run more efficiently on 240V.
| NEMA outlet | Amperage | Max continuous (80% rule) | Common use | Mining note |
|---|---|---|---|---|
| NEMA 6-15 | 15A | 2,880 W | 240V appliance outlet | One S19/S21-class miner at 240V (miners run more efficiently on 240V). |
| NEMA 6-20 | 20A | 3,840 W | 240V tools / window AC | Comfortably powers one S21-class miner at 240V with headroom. |
| NEMA 6-30 | 30A | 5,760 W | 240V heavy appliance | One large hydro miner, or two air miners, on a single 240V circuit. |
| NEMA 6-50 | 50A | 9,600 W | Welder outlet | Enough for several miners or a small mining PDU on 240V. |
| NEMA 14-30 | 30A | 5,760 W | Clothes-dryer outlet (4-wire) | A very common existing 240V circuit to repurpose for mining — ~5.7 kW usable. |
| NEMA 14-50 | 50A | 9,600 W | Electric range / EV charger | A common high-capacity outlet; runs a small mining setup or PDU. Don't share with the EV at full load. |
| NEMA L6-20 | 20A | 3,840 W | Locking 240V connector | Twist-lock 20A/240V — a secure connection that won't pull out, common on mining gear. |
| NEMA L6-30 | 30A | 5,760 W | Locking 240V connector | Twist-lock 30A/240V — a frequent choice for mining PDUs and rack power. |
All rows are 240V. Max continuous wattage applies the NEC/CEC 80% continuous-load rule. Miners run more efficiently on 240V than on 120V. Have a licensed electrician verify your wiring.
Source: D-Central Home-Mining Circuit & Outlet Reference. Max continuous W applies the NEC/CEC 80% rule. Informational only — have a licensed electrician verify your installation.
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