Wire yellow and green, respectively, that line of fire or zero line
Red, yellow, green is the line of fire, blue is zero line, yellow and green is ground
Third, in the cable trench, tunnel, when both sides of the cable bracket, 1000 volts below the power cable and control cables should be as much as 1000 volts and above the power cables were laid on different stents Fourth, the height of the cable tunnel is generally 19 meters; difficulties, in the local area may be appropriate to reduce the length of the cable bracket in the cable trench should not be greater than 350 mm; in the tunnel should not be greater than 500 mm cable in the cable trench, tunnel laying when the net distance, should not be less than the specified value Cable trenches and wire tunnels should be waterproof; the slope of the bottom drains should not be less than O 5%, and should be set water puddle; water can be collected by the puddle pump, when the conditions, the water can be directly discharged into the sewer
GB- Code for Design and Acceptance of Electrical Cable Installation and Installation of Electric Installations GB-
The color of the bridge is generally based on the main equipment of the factory set down, most of the bridge for the motor gray, so look at the meaning of equipment and manufacturers, strong corrosive environment should be used (F) class epoxy resin anti-corrosion flame retardant cable Bridge. Arm, bracket also use the same material to improve the service life of the bridge and accessories, please refer to the cable bridge installation requirements and specifications
