SMA Solar Technology America LLC
☐ The thresholds for the input voltage and the input current of the inverter must be adhered to
(see Section 14 "Technical Data", page 71).
☐ The maximum input current per string must be maintained (see Section 14 "Technical Data",
page 71).
Additionally required material (not included in the scope of delivery):
☐ Depending on the number of strings, one or two conduits made of metal: 25.4 mm (1 in)
☐ Depending on the number of conduits, one or two UL-listed rain-tight conduit fittings for wet
locations complying with UL514B: 25.4 mm (1 in)
☐ For closing unused enclosure openings for the DC connection: UL-listed type 3R filler plugs
Cable requirements:
☐ The DC cables must be approved for temperatures of over +90°C (+194°F).
☐ The maximum cable length subject to conductor cross-section must be observed.
☐ Conductor type: copper wire
☐ Only use solid wire or stranded wires.
☐ Conductor cross-section: 10 mm² to 35 mm² (8 AWG to 2 AWG)
☐ The DC cables must be sized in accordance with the installation requirements applicable on
site.
6.4.2
Connecting the PV Array
Requirements:
☐ A means of disconnecting the inverter from the PV array must be present.
☐ The grounding of the PV system must be executed as per the specifications of the National
®
Electrical Code
ANSI/NFPA 70 and is the responsibility of the installer.
☐ All electrical installations must be carried out in accordance with the local electrical standards
and the National Electrical Code
C22.1.
Procedure:
1.
Danger to life due to electric shock
• Disconnect the inverter from the utility grid and ensure that it cannot be reconnected.
• Disconnect the inverter from the PV array and ensure that it cannot be reconnected.
Installation Manual
®
ANSI/NFPA 70 or the Canadian Electrical Code
WARNING
6 Electrical Connection
®
STPTL-US-10-IA-xx-20
CSA
33