Installation Design
4
25
4.5
Tightening Torques and Cable Protection
4.5.1
Tightening Torques for Power Cable Connections
Tighten the cable with the proper torque shown in Table 4-2; for fear of loosen of cable
lugs that may cause poor contact or high contact resistance, even fire.
Table 4-2 Tightening Torques for Power Cable Connections
Screw size
Torque
（
in-Ibs, N
·
m
）
M4
18 in-Ibs (2 N
·
m)
M5
28 in-Ibs (3.2 N
·
m)
M6
62 in-Ibs (7 N
·
m)
M8
142 in-Ibs (16 N
·
m)
M10
301 in-Ibs (34 N
·
m)
4.5.2
Cable Protections
z
Protection of communication cable:
−
Communication cables are thin and easily to be broken. Lay power cables first
then communication cables.
−
Communication cables should be laid in cable trench or cable support arms or
tighten up by cable ties.
−
Avoid heat element and the strong electric filed.
z
Protection of power cables:
−
Strong electric current in power cables. Protect the insulating layer from sharp
edges.
−
Tighten power cables up with insulated cable ties if necessary.
4.6
Installation Process
Fig 4-4 shows the installation process of the SG100KU. And Table 4-3 gives a
description about it.
