3.4.2 Required Protective Devices
3.4.3 AC Wiring Preparation
Below is the procedure for preparing the AC conductors for connection to the
AC terminals:
• It is important to choose the proper size for AC cable. Refer to Figure 3-15.
• The cross-sectional area for each AC conductor is 50~185 mm
2
for Cu.
(95~185mm
2
for Al)
•
The maximum width of each terminal lugs should be within 31mm, the diameter
of screw hole should be wit
hin Φ1
0.5mm, as shown in Figure 3-16.
• Terminal can use for Cu lug (Tin plated).
It is recommended to install an upstream AC line disconnection and over current
protection device. Please refer to your local rules for the required product.
Rated voltage
Rated current
Breaking Capacity
min. 600 V
min. 175 A
min. 10 kA
Table 3-1: Recommended AC circuit breaker rating
Figure 3-15: Size of AC conductors
Figure 3-16: Dimension of lug
L1
L2
L3
PE
outer
jacket
Conductor cross-section:
Cu: 50 ~ 185 mm
2
Al: 95 ~ 185 mm
2
Conductor Compatible Lug
Cu
Cu(Tin-Plated)
Cu(Nickel-Plated)
Pure Cu
Stainless steel
Aluminum (Tin-Plated)*
Al
Bi-metal*
Conductor
AC Terminal (tin-plated) PE Connection (Nickel-plated)
* It is recommended to apply electrical grease before fitting
wire conductor into terminal lug for best protection.
The working temperature of power cable should be at least 90°C.
Compatible Lug
Cu
Cu(Tin-Plated)
Pure Cu
Aluminum (Tin-Plated)*
Al
Bi-metal*
<31 mm
Φ10.5 mm
32
Installation
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