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===Legacy fuseboxes=== A small number of pre-1950 fuseboxes are still in service. These should be treated with caution because exposed live parts are common on these boxes. The installations they supply will not meet modern standards for [[Earthing system#Safety|electrical safety]]. Another characteristic of very old installations is that there may be two fuses for each circuit; one on the [[Electrical wiring|live]] and one on the [[Ground and neutral|neutral]]. In rare instances, old ring circuits may be encountered with no fewer than 4 15 A fuses per ring, one on each of L and N, and this duplicated for each of the two feeds for the ring.
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