Please help me master! The total length of highway 1000 meters, 25 250W sodium lamp, how much diameter? Cable aluminum strip armor to large diameter?
Each electrode needs a copper wire of greater than 0.17 square millimetersThe calculation is as follows:Copper wire area is equal to the load power kw multiplied by the number 0.65, number less than or equal to the actual section of the wireChoose its value, big
It depends on your control points on which position the bus with 12 mm, two branches according to the number of hanging line selection, each lamp by 0.5 mm, a minimum of not less than 2.5 square. (choose the line to take big, not take small, such as: 6 lights, 3 square millimeters, to close to 4 square millimeters).
Larger than the coarse grade conductor, the aluminum wire in the calculation of copper on the basis of the results of a rough level.250W high pressure sodium lamp for wire area: kW 0.25 * 0.65=0.1625, then should choose more than 0.17 square millimetersCopper wire is enough
