我建立一个牧羊人的小屋浴室和厨房约46米离开我的消费单位的房子。我有两个问题:我想随需应变的热水器淋浴和1在厨房水龙头。10-12kW热水器我看着。淋浴将(希望)短,或许一天两次。我电工建议避免他们和有一个80 - 90 l未放气的热水箱3 kw浸没式加热器计时器。但是,我担心,当需要淋浴在早上和下午晚些时候计时器是相当无意义的和加热器可能会在这种情况下,能耗上升(我觉得值2700千瓦时的年度消费这些东西)。正如牧羊人的小屋是一个非常小的房子,空间是一个问题和热水柜可能必须安装在小屋的外面,可能导致更多的热损失?我的第一个问题是能源热水系统会更好?然后第二个问题是我应该运行厚度的铠装电缆?non-armoured部分在主的房子大约15.5,然后31米铠装电缆外(挖掘土地)到消费者委员会在茅棚里。 I will earth it near the hut with a spike, so I guess I can run a 2 core cable. For the hotwatertank system my electrician suggested a 16mm cable would be enough, but would this also be enough for the on-demand water heater? The other equipment in the hut would be a 2-ring induction cooker, a small fridge, a kitchen and bathroom fan, some lighting (probably LED), a computer and monitor, some charging points, a kettle, microwave/small oven, and then some 6-8 sockets. Any advice is very welcome.