Generally for consumer wiring the standard should be, You should then buy the properly colour coded wires and a larger core copper cable like Exactly the same way your 110/220v lights are wired in(all this is just downscaling). So the only way to properly run devices that require 12volts in your home is NOT using a receptacle but wired in for good. So step down regulators guarantee near constant 5v at the source while you can supply several places with the same cable guaranteeing more power on smaller core cables.īut LED lights do not run at 5v! - Only at 12v! Over distance you loose power and the lower the voltage the thicker the cable you need to transport more power. You may ask why not just run 5v directly from the batteries? The same reason you have 110v/220v in your socket. Then at each receptacle you can buy a 12v - 5v DC-DC converter (£1.50) and your USB plugs will be standardised and power via your 12Volt supply. That is enough for basic applications that need 12volt! But if you find thicker ether cable like 22awg you can raise this to 10watt per pair. If you decide to use an Ethernet cable you will have 4 pairs you could use giving you a total of 14.4Watts per etrher cable. At 12 Volts that is no more than 3.6Watts per pair. To be safe lets use 26AWG specification for current calculations.Ģ6AWG by standard should handle 0.3Amperes. OK- But what has that got to do with 12Volts?Įverything! You can run an Ethernet cable to transport your 12Volts throughout out the house which typically uses 24AWG. That is why you cannot find a receptacle for 12 Volts. So just running a 12Volt wire is impractical because you would have to regulate the voltage up or down - Just like with 110/220Volts now. I'm not interested in a generator.)Īllot of DC devices at home run at various voltages from 22Volts down to 5Volts. (This is more a side project to help reduce my electric usage and take advantage of the solar panel I already have than a serious source of emergency power. this one, have a 12VDC receptacle with two angled blades, but I can't find anything like that at the usual retailers and I'm not sure if that's a standard receptacle shape or not.ĭoes anyone have any experience or guidance on where to get started for 12-volt DC residential circuits? Is there any standard for wiring residential 12 volt circuits? Is it even legal? I can't find anything on wire gauge recommendations, outlet and plug shapes, etc. maybe installing some 12 volt LED lamps, or removing the wall warts on some of my electronics. I'd like to semi-permanently install the batteries in the basement and set up a couple 12-volt circuits for daily off-grid use. the type that can hook up to a car battery. Right now the only way I get useful power from them is to use a 12VDC -> 120VAC inverter, e.g. I have a couple deep cycle batteries that trickle charge from a solar panel, for emergency use.
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