I found a 13A FCU, connected to the kitchen ring supplying an outdoor junction box, providing two SWA 2.5mm radials. Unconventional? yes. One radial 3m long to IP56 socket, and one radial supplying garage unit, lightning and power.
There is only a small battery charger in the shed. The shed unit has a main switch, 20 A breaker to socket, and a fluorescent light. I recommended changing the breaker to 10 amps to give discrimination against the 13 A FCU, and he agreed.
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