Can you charge an EV from a normal socket, and is it safe?

Continuous load is a different duty

A socket rated 16 A that runs at 15 A for eight hours every night is working far harder than one that powers a kettle. The label on the socket is not the whole story: the terminals, the wire gauge and the MCB all matter.

Quality sockets and correctly torqued terminals make the difference. If in doubt, derate and charge slower.

Use a dedicated circuit, not a shared one

If the same circuit feeds an air conditioner or a geyser, the combined load can trip the MCB or — worse — overheat wiring that sits below the MCB's rating.

A dedicated run from the board with a correctly rated MCB and residual current protection is the right setup, and an electrician can usually do it in a few hours.

Never use an extension board

Extension boards are built for short, intermittent loads. Their thin conductors and weak contacts are the single most common source of melted plugs in EV charging.

If the car cannot reach the socket, move the socket — not the car. This one rule prevents most of the home charging incidents we see.

Heat at the plug is the warning sign

A plug or socket that feels hot after an hour of charging has high contact resistance, which gets worse over time and can start a fire.

Replace the socket immediately if you see discolouration or smell burning. Do not keep using it and hope it settles — it does not settle.

Residual current protection matters specifically for EVs

EV charging can produce small DC leakage currents that an ordinary Type AC RCD may not detect reliably. The installation should use a Type A RCD together with DC leakage detection in the charger, or a Type B RCD, as practice under standards such as IEC 61851 describes.

Ask your electrician which approach they are using and why. And get the earth resistance tested — old buildings often have weak or missing earth connections, and chargers are right to refuse to start without one.

The RIOD chargers this applies to

Frequently asked questions

Is it safe to charge an EV from a 15 A household socket?

It can be, on a dedicated circuit with a quality socket, correct MCB, appropriate residual current protection and a sound earth. On a shared or worn socket it is not.

Why does my plug get hot while charging?

High contact resistance, usually from a worn socket or a loose terminal. It gets worse over time and is a genuine fire risk — replace the socket and have the circuit checked.

Can I use an extension cord for EV charging?

No. Extension boards are designed for short intermittent loads, and their conductors and contacts are the most common cause of melted plugs in EV charging.

Protective device selection must be confirmed by a licensed electrician against current CEA guidance, the charger manual and your DISCOM's requirements. Never bypass a protective device.