Charging safety
Earthing, residual current protection and cable care.
You'll learn
- Explain charging safety clearly and accurately
- Read the numbers that define the behaviour
- Apply the idea to a real charging session
Overview
Charging draws a household's worth of power for hours at a time. Everything about the installation is designed around continuous load and fault detection.
In depth
- Dedicated circuit with correctly rated protection
- Type A residual current device with DC leakage detection (or Type B)
- Verified earth connection, or an earth-fault detection device on TN-C-S supplies
- Cables uncoiled fully — coiled cables overheat
- No domestic extension leads or adapters
Granny cables are a last resort
A domestic socket is not designed for a 10 A continuous draw for eight hours. Old sockets are a genuine fire risk — have the circuit inspected before regular use.
Key takeaways
Remember this
- Charging is a continuous, high, sustained load.
- Residual current protection must handle DC leakage.
- Never use domestic extension leads.
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