A, wire and tube and steel pipe installation: ( 1) Choose dark apply wire tube, steel tube design, construction, in accordance with the wire tube, steel pipe laying subentry engineering construction technology standard, strict wire tube, steel tube with purchase, terminal block, lamp box, switch box has to produce
a, cables and pipes, steel pipe installation: ( 1) Design should be based on power lines and hidden applications. Construction shall be in accordance with the wire and pipe laying construction technology standard of the sectional works. Procurement should strictly control cables and pipes. Terminal block, lamp holder box and switch box should have product certification. ( 2) Embedded pipe should work closely with civil engineering construction. First of all to meet the arrangement of pipe, next to the location of the electrical pipeline. ( 3) Outdoor buried cable distribution circuit should be high density polyethylene pipes. Pipeline buried deeply 0. 7 m, crossing the river when the embedded depth of not less than 0. 5 m, crossing the highway cable will use the steel pipe laying. L500。 Garden lights line branch, W300 shall be set up beside the lamp. H700 across well. All branch lines are reliable waterproof measures should be taken, Such as IP62 waterproof connector) 。 Second, threading: pipe threading should be strictly controlled. Wire specification and model must comply with the design requirements, and have the factory certificate. Upon arrival, check the insulation resistance of the coil, wire core diameter, material and weight is in accordance with the requirements. Should choose according to pipe diameter size in accordance with the protection of the specification. Nylon, wiring the first specification and material should comply with the requirements. Pipe threading should be after completion of the building structure construction and civil engineering construction, wear belt line, first to use phi. 1. 2 ~ 2. 0 mm wire, for 10 ~ 15 cm margin on both ends, and then clean pipe, switch boxes, socket boxes and other dirt and dust. The threading, pay attention to the same ac circuit conductor must wear on the same pipe. Different circuit and voltage wire, communication and a straight line shall wear the same root canal, but except for the following situation: the standard voltage less than 50 v circuit; The same equipment or the same line equipment of power supply circuit, and no special anti-interference requirements of the control circuit; The same lantern some circles; Several circuit used for similar lighting, but the total number of catheter in pipeline should not exceed eight. Conductor is reserved length: junction box, switch boxes, socket boxes, socket boxes, to 15 cm, power distribution box to box 1/2 of the circumference. Third, installation of lamps and lanterns: ( 1) According to the design requirements for the lamps and lanterns and light. All the lamps and lanterns should have product certificate. The wiring inside the lamp shall not be exposed. Lamps and lanterns should have complete accessories. ( 2) According to the on-site inspection of lamps and lanterns is in line with the requirements, check the wiring of lamps and lanterns, lamps and lanterns is installed must be strong, position right, neat and beautiful, connection is correct. More than 3 kg of lamps and lanterns, must use magnesium hook or bolted, less than 2. Can the lamps and lanterns of 4 m metal shell. ( 3) After the installation is complete, each branch insulation resistance testing of qualified, the power can run. After electrify, check carefully whether the lamps and lanterns control flexibility, ready. The switch corresponds to the control order of lamps and lanterns. If you find problems, must cut off power supply first, then find out the reason for repair. Four, grounding protection and security measures: ( 1) Ground fault protection using TT, outdoor lighting box set around a closed circular artificial grounding device. Grounding electrodes with 50 * 50 * 5 L2500 galvanized Angle steel, galvanized flat steel cables use 40 * 4. Grounding pole spacing is 5 m, buried deeply 0. 8 m, grounding resistance is not more than 10 ohms. ( 2) All the lamps and lanterns in the system earthing terminal is connected to the lighting box of polyethylene on the bus, and reliable grounding connection through PE line. ( 3) In order to prevent lightning overvoltage, the outdoor lighting box installed a surge protector. Shandong solar technology development co. , LTD focus on solar road lighting production and research, integrating the practice and application of the intelligent lighting system, realize the real enterprise Internet + road lighting.