SMA SUNNY BOY 3.0-US Instructions D'installation page 33

SMA Solar Technology America LLC
Figure 10 : Connection overview for parallel connection of the DC inputs A and B
Requirements for the PV modules per input:
☐ All PV modules must be of the same type.
☐ All PV modules must be aligned and tilted identically.
☐ If inputs A and B are connected in parallel, the PV modules of inputs A and B must be
identically aligned and the same number of PV modules connected in series must be
connected to all strings of inputs A and B.
☐ The maximum inverter system voltages permitted may not be exceeded (see Section 10
"Technical Data", page 60).
☐ The maximum short-circuit current may not be exceeded (see Section 10 "Technical Data",
page 60).
Additionally required material (not included in the scope of delivery):
☐ Conduits: 21 mm (0.75 in) or smaller with a proper reducing bush
☐ Rain-tight conduit fittings for wet locations complying with UL 514B: 21 mm (0.75 in) or
smaller with a proper reducing bush
Requirements for the DC conductors:
☐ The DC connecting terminal plate temperature rating is +90°C (+194°F).
☐ The conductors with regards to its ampacity, rated temperatures, operating conditions and its
power loss must be made in accordance with the local standards and the National Electrical
®
Code ANSI/NFPA 70 or the Canadian Electrical Code
☐ Conductor type: copper wire
☐ Maximum permissible temperature: +75°C (+167°F) or +90°C (+194°F)
☐ The conductors must be made of solid wire, stranded wire or fine stranded wire. When using
fine stranded wire, bootlace ferrules must be used.
☐ Conductor cross-section: 2.5 mm² to 10 mm² (14 AWG to 8 AWG)
Installation Manual
6 Electrical Connection
®
CSA C22.1.
SB30-77-1SP-US-40-IA-xx-13 33