Electrical equipment installation project "power cable laying" cable cross-sectional area refers to the cable cross-sectional area, or refers to the copper core cross-sectional area, such as 3 × 25mm2 refers to 25mm. 75mm2 or cable cross-sectional area of 490mm2? More
Is not the power cord is loose, or is the motherboard battery power
Calculation method: the amount of engineering calculation formula: L = (pipe length calculation + wire reserved length) × with the number of cross-section wire. Note: plastic pipe should not be flattened, cracks, no debris in the tube, cut the mouth should be flat, the nozzle should be shaved plastic wire pipe connection using glue bonding, plastic pipe bonding must be tightly tight, and in the pipeline plug on the plastic pipe plug, to prevent the paddle, plug tube concrete floor, wall and brick structure of the various switches, socket bottom box , The lamp junction box and the pipe connection must be connected with the wiring, is strictly prohibited plastic pipe directly into the junction box dark in the concrete junction box requirements with wet cement paper or plastic foam filled with internal, not allowed to use The cement paper packs its outside. Embedded in the floor, the shear wall of the plastic pipe, the junction box should be fixed firmly to prevent the shift
Said cross-linked polyethylene insulation, double steel armor, PVC outer jacket. Voltage level 0.6 to 1 kV, 5 core, cross section 10 square millimeters. About four centimeters in diameter.
