Special construction of construction power programme (including detailed calculation)
This document is a special construction scheme for construction electricity (including detailed calculation), including: (1) excerpts of the contents: (1) electrical equipment on the fire line is overloaded for a long time due to overload of the electrical line, and the use current exceeds the safe carrying capacity of the conductor. At this time, if the selection of protective device is unreasonable, and the wire core overheats, the insulation layer will be damaged and burned, causing a fire. (2) The fire caused by the short circuit of the line is caused by the short circuit of the line due to the insufficient safety distance of the wire, the insufficient insulation grade, the aging, damage, or careless human operation. The strong short circuit current quickly converts into heat energy, causing serious heating of the wire, rapid temperature rise, resulting in melting of the wire, burning of the insulation layer, causing fire, etc.