SMA SB 700U - Manual (Page 34)

4-10 SMA America SB700U-11:SE3207
Wiring the DC Input
This subsection provides procedures for configuring the Sunny Boy’s DC input-
voltage range and for wiring the DC input from the PV array (via the DC disconnect
enclosure) to the Sunny Boy. Figure 4-5 shows a simplified wiring diagram of a PV
system.
Figure 4-5 Simplified Electrical Wiring Diagram of a PV System
DC Connection Requirements
All electrical installations DC and Protective Earth
(PE) must be done in accordance with all local
electrical codes and with the National Electrical
Code (NEC), ANSI/NFPA 70.
Use for all DC wiring connections to the Sunny Boy:
• 6 - 10 AWG
• 90° C (194° F)
• solid or stranded copper wire
Use for all Protective Earth (PE) wiring connections
to the Sunny Boy:
• 6 - 14 AWG
• 90° C (194° F)
• solid or stranded copper wire
WARNING:The DC disconnect for the inverter must
have a minimum rating of 250 V DC and 18 A con-
tinuous.