Specifications
Edition 3.0E, 2011/05
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4. 
Suggested cable width for AC wire 
Model 
Diameter φ 
(mm) 
Area (mm
2
)  AWG no. 
 CPS SC1.5KTL /  
CPS SC2KTL 
≥1.29  ≥1.5  ≤16 
 CPS SC2.8KTL 
≥1.63  ≥2.0  ≤14 
 CPS SC4KTL /  
 CPS SC4KTL-O 
≥2.05  ≥2.5  ≤12 
Connect to PV Panel (DC input) 
1.  Make sure the maximum open circuit voltage 
(V
oc
) of each PV string is less than 500V
DC
 (or 
450V
DC
 for CPS SC1. 5KTL) UNDER ANY 
CONDITION. W e recommend use the solar 
modules, whose total U
MPP
 at STC in the string 
between 250V
DC
 and 350 V
DC
 (200V
DC
 and 
320V
DC
 for CPS SC1. 5KTL) with amb ient 
temperature 25°C. 
2. Use Wieland connectors for PV a rray 
terminals. 
3.  Connect the positive  and negat ive terminals from the PV p anel to 
positive (+) terminals and negative (-) terminals on the PV-Inverter. 
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