At present, the twisted wire cables on the market are generally ordered by boxes. The common form of boxing is: 305m (1000ft) we tote packaging form. Therefore, in the design of the horizontal subsystem, after calculating the total amount of all horizontal cables, it should be converted to the number of boxes, and then the cable is ordered. The formula for ordering the number of cable boxes should be as follows:

Order the number of cable box = int (total line volume/305), int () is to take the entire function up.

For example, if the line consumption of the entire building is known to be 5340m, the number of cable boxes required to be ordered is:

Int (5340/305) = int (17.5) = 18 (box)

What are the common calculation formulas for comprehensive wiring?

The demand of RJ-45: M = N*4+N*4*15%

M: Represents the total demand of the RJ-45 connector

N: Represents the total amount of information points

N*4*15%: indicates the surplus

Requirements for information modules: m = n+n*3%

M: Represents the total demand of the information module

N: Represents the total amount of information points

N*3%: indicate a rich surplus

Line volume per floor: C = [0.55*(l+s) +6]*n

L: The longest information point distance from the management room on this floor

S: The closest information distance from the management room on this floor

N: The total number of information points on this floor 0.55: spare coefficient