… by their own source of energy (for example, dry batteries, accumulators, magnetos), other than lighting equipment of …
Explanatory notes
… of a self‑contained source of electricity (e.g., dry cell, accumulator or magneto). They comprise two elements (i.e., … handle or a fastening device and may be recognised by their particular shapes and their light weight. The term therefore … to the miners’ helmet, while the source of electricity (accumulator) is usually hooked on to the belt. (6) …