As an alternative to spiral cables, self-retracting cable reels are a popular method of providing a reliable bond from the earthing bar to an IBC (intermediate bulk container) or other container.  The choice between spiral cables or retractable reels is down to practicality, convenience and user preference, as both are equally effective earthing devices.

BS5958 states that:  During both filling and emptying, the container and all metallic parts of the system, such as funnels and nozzels, should be bonded together and / or earthed (11.2.1).

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