Before I got serious about off-grid living, I worked in facilities management for about fifteen years—mostly managing HVAC systems and power distribution in office buildings.
Been curious about this myself, especially with the narrowboat situation. Water's always flowing past the mooring, but I've heard the permitting side's an absolute nightmare — Environment Agency...
Cheers for the detailed replies, @FormerMechanic14 and @Boycie. Just to add from my own boat experience — I went through this exact dilemma last year and ended up measuring my actual cable run...
The answer's really all over the place depending on what you're after, isn't it?
I'm looking at this from a narrowboat perspective and the numbers are mental.
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