Led Light
Help needed with gauge wire for 12v circuit led lighting?
I want to install a voltage of 12 LED light circuit in the eaves my house. The LED units is 2w each with 18, spread over a length of 70 meters total. I know that, because the voltage drop, the size of cable is essential, but am not sure how to calculate the power that is at varying distances from the source, a battery charged by a air-driven generator. Thank you for any help.
becaue you use LED lamps not incandesscant, the effect of voltage drop will not be as dramatic .. but will be present. However, the total of 3 amps could be better divided into three groups amp a piece / 6 group. The voltage drop will be proprtional today. While more than 1 amps 1 ohm is 1 V (volts = current / reststance), not much to 220V, but nearly 10% 12 V! So make sure the cable as well as good with one minor run as possible, ideally, the power source of 12 V would as close as possible to the lamps. So no chance he may be central .. and 3 short front overhang 70m not a total end? even by 6 works … to further reduce losses. You can see why these 12v interior sets such cables are of high caliber for the pair of son .. that lights are strung / that these circuits are not 12v 220 (or 110v American readers), so really, the least of Electrical Safety, applies not, but as noted, the power losses build … then it becomes the dominant factor. As a guide to the link driver 1.5mm 10m ²: .25 ohms sq. conductors 2.5 mm: .13 ohms double the current return … and if we take a trail 20 meters (2 x 20) m and assume a receiver (not all three). 1.5mm conductor m: .25 x 40 ohms = 1 ohm … then a drop of 2.5 V mm Sq drivers: .13 x 40 ohms = 0.5 ohms .. then drop 0.5. It is not clear how well this reguated food is .. 12V nominal battery leadAcid actually up 14.4 V and even other technologies are not pure power contstant … so unless you put a regulator in place, you will see in varieation vlotage due to battery leaks losses in cables … If you use cable-2.0mm 1.5. So I think the off the platform 13 (1.5mmSq) and 2.5 mmSq flexible internal network cable to where you left your run along the gutter … it would well. As a guideline for the selection of flex mm (they usually cite the current capacity of more than mm ²), 0.5 mm ² flex is used for 3-5 amps (220) 0.75 mm ² flex is used for 7 Amps (220) Flex 1.0mm ² is used for 10 amps (220) Flex 1.5mm ² is used for 15 amps (220) ie both SQ 10 mm should give you a good starting point. if you find intensity lights change too .. so .. If you really want to improve or make it more stable. Then you must think in terms of output stabilized inverter/12v .. more than 12V 24V battery example config .. the cables at the eave (Half the current). and to an output of 12V converter cable to the start of lighting term – it is stable and you only get the loss, the worst start of the race. Enjoy
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