Where is the cable tray used? Fire power plant, coal mine group? For example, civil construction sites, some of the high-rise buildings.
It is said that the two armored PVC control cables are 4x25 square, and the low-voltage cable wears the pipe along the ground. This logo does not seem clear. KVV22 should be armored control cable, then 4 * 25 before FC, can also be understood as four 25-diameter steel pipe.
If you are two of these electrical appliances connected to a line, then the total power of 3200W or so, with 2.5 square feet of copper is enough, the best plug and socket all 16A, especially electric water heater, ground can be used 1.5 lines.
Because YJV22 can be buried, so when the tube casing with plastic or steel pipe is no provision. Generally in the outdoors is a concrete packet bellows, into the building with steel pipe, are designed according to soil soils may be. Indoor in addition to continuous cable with the outside, rarely use YJV22 through the tube, because it is less likely to damage by external forces.
