The factory to give the motor cable flame retardant casing, fire pipe has a grade of it, generally how much can be used more
The wire sleeve has no effect on the current. The wire sleeve is the same as the non-casing current, but only when the wire is installed, the heat dissipation effect of the wire tube is considered poor, and the safety load (value) of the wire is reduced. Wire jacket, in fact, also known as insulation casing, is a composite of insulating material of the new composite pipe, it is resin and other composite materials from the composite insulation sleeve, for wearing wire and protection Wire, so called wire sheathing. It has a strong anti-pressure, light weight, smooth wall, the friction coefficient is small, easy to wear the wire, do not damage the wire. Move, transport than metal pipe and cement pipe easy and convenient. Construction and installation is simple, both easy and effort. Corrosion resistance, insulation, non-magnetic, acid, alkali, flame retardant, anti-static.
The choice of the main bar is the relationship between the heat and the heat generated by the wire, and the casing is affected by the heat dissipation. Therefore, the electric current of the electric wire needs to be reduced.
After the wire through the tube heat dissipation in the air laying, so allow the current to be reduced. For example, 6 square plastic key valve couch 郛 bone shop stall wipes insulated copper wire in the air laying to allow current 57A, steel pipe wear two wire current 50A, steel pipe wear three wires for the 46A, wear four wires for the 42A. If the plastic tube allows the current to be reduced, respectively, .40 and 35A.
