Cable is more suitable for light, what kind of specification

Common customer doing recently high lamp base when asked about this topic, today in view of the cable, port high lamp manufacturer to make a detailed introduction,

for example frame type 28 meters 12 fire 400 watts, we put the total number of lamp is divided into three copies of each phase with four 400 - watt, at the same time 400 watts sodium lamp starting current of 7 amperes ( Sodium lamp starting current 2 a 150 w, 250 w sodium lamp starting current is 4 a, 400 w sodium lamp starting current is 7 a. No capacitance starting current is 2 a, 1. 7 ~ 1. 8A) , then 4 * 7 amperes = 28 amperes.

according to the wiring basic common sense ( 1 square with 6 a current) But considering the pressure drop and alternate load and circuit to damage to use 10 square phase line can use. Light load is uniform, in the case of a three-phase even zero line can be less than the line, have the customer need to still need to match one ground wire. This is the so-called three-phase five wire cough up! Street lamp wiring up method, if the customer need low cost, on the electric power when party b can use the single-phase power, namely one zero ( N) A fire ( L) The power supply. If you have any requirement still need to configure grounding ( PE) Line. If very strict engineering also need to set up the whole night in the middle of the night lights, then points ( Component control) Or ( Loop control) .