SMA STP 12000TL-US - Manual (Page 33)

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.
☐ Cable 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 Paragraph
690.41 to 690.47 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 standards and the
National Electrical Code ® ANSI/NFPA 70 or the Canadian Electrical Code ® CSA 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.
2. If the lower enclosure lid is mounted, loosen all
screws of the lower enclosure lid using an Allen
key (AF 3) and lift the enclosure lid from below
and remove it.
6 Electrical Connection SMA Solar Technology AG
Installation Manual 33 STP12-24TL-US-IA-en-16