Electronics > Beginners

Transporting 12V 10A over about 10 meters

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paulca:
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.

So the other approach is to run something like basic outdoor grade 2.5mm twin and earth but to use a Boost module on the solar end to up the voltage to 48V and a buck module to drop it back to 12-15V for use.

Assuming I will hardly likely to actually use the full 10Amps which it's fused for, is it wise to trust the Ebay boost/buck modules for this?


(As an aside I'm currently using a whole cascade of batteries to get the power in the house.  Solar panel charges a 100A Marine battery.  I use my DC-DC bench PSU to then run off that and charge a 26Ah leisure battery which I carry into the house and use the bench supply or a bug converter to charge phones, eCigs etc.  I'm estimating I'm losing about 25% doing this... and carrying a 26Ah lead acid and PSU in and out twice a week is getting old)

schmitt trigger:
Aluminum railing, perhaps?

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

Easy to cut and machine.

IanB:
Automotive jump cables can come in fairly hefty gauges and don't seem hugely expensive. Could you use these as a source of cable to bring the power where you need it?

bd139:
I would move all my shit to the garage  :-DD

paulca:
Not sure I want to run railings or jumper cables up the walls!  I think when I used a voltage drop calculator I was still losing 1 volt of 10 meters of 10 AWG cable.  At 48V I don't mind losing 1 volt at lower current over thinner cable.

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