Electronics > Beginners
Transporting 12V 10A over about 10 meters
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fourfathom:

--- Quote from: paulca on August 30, 2019, 02:15:26 pm ---I am toying with idea of wiring my solar power (12V 10A) from the garage into the upstairs room where I'm most like to use it running bench supplies and charging my phone etc.

I worked out that over 10m of cable, unless I want to run seriously expensive high gauge cable I would probably lose 1 or 2 volts and 10-20W of power over the run at 10Amps.

--- End quote ---

For a 10m run (20m of wire), #10AWG wire will drop about 0.6 Volts at 10A.  The closest metric wire would be 6mm (even lower resistance).  Is that "seriously expensive high gauge cable"?  I would think the converters you are considering would be more expensive.
David Hess:
Compare the cost for equal efficiency between cable and using converters.  10 AWG is pretty small and those converters are not close to 100% efficient.  1 volt of loss from 12 volts is 8.3% so it would not surprise me that both converters are the equivalent of 2 volts of loss anyway.
themadhippy:
Going by the tables in the uk wiring regs , 10 meters of 6mm twin and earth  will have a 0.73V drop over 10 meters,and youll get change out of £20 if you buy it from screwfix or tool station.Move up to 10mm and the volt drop is down to 0.44V but the price is almost double.
Yansi:

--- Quote from: schmitt trigger on August 30, 2019, 02:17:31 pm ---Aluminum railing, perhaps?

They can be had relatively inexpensive, and you can obtain some hefty cross-sections.

Easy to cut and machine.

--- End quote ---

Not sure  what you mean by that, but there quite some different alloys there and AlMgSi is nowhere near suitable for current carrying.

To OP: Use just some beefy wires/cable.
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