Mains, PSUs and other goodies.

[Rogue]

Run the spur wiring thru the fish tank, that should keep it cool and allow you to go up to a 20 amp fuse.

I'm already wondering when the whole place will end up falling into the fishtank as it is! The maximum loading for the floor is one of the many reasons why I'm not going to use concrete-filled bases

[JAZZCNC]

You could always save some amps and weight in attic by using the fish tank pump and water for cooling the spindle.? Sure Nemo and his mates won't mind.! . . . Then when it's time for water change then use it for flood cooling. . Lol

[irving2008]

You could always save some amps and weight in attic by using the fish tank pump and water for cooling the spindle.? Sure Nemo and his mates won't mind.! . . . Then when it's time for water change then use it for flood cooling. . Lol

Many moons ago I was working at a large data centre associated with a UK bank... the cooling system for the mainframe did indeed run outside to a large bank of evaporators and the condensate was stored in fishponds which, because it was well aerated and at a controlled pleasantly warm temperature, housed a startling variety and size of tropical fish...

On a serious note though, how thick are the joists in the attic space? Is it a sanctioned conversion or have you just migrated to it?

[Jonathan]

Not as silly an idea as it might seem - if the temperature of the water from the spindle is greater than that of the tank (i.e. put in a quick op-amp circuit to compare it) you could put a heat exchanger in the tank and pump the water through that so it's an isolated system and the fish keep cosy for free.