… by their own source of energy (for example, dry batteries, accumulators, magnetos), other than lighting equipment of …
Explanatory notes
… by their own source of energy (for example, dry batteries, accumulators, magnetos), other than lighting equipment of … of a self‑contained source of electricity (e.g., dry cell, accumulator or magneto). They comprise two elements (i.e., … to the miners’ helmet, while the source of electricity (accumulator) is usually hooked on to the belt. (6) …