SMA STP 12000TL-US - Manual (Page 26)

Damage to the inverter due to moisture ingress during electrical installation
• Never open the inverter when it is raining or snowing, or the humidity is over 95%.
• For attaching the conduits to the enclosure, only use UL-listed rain-tight conduit fittings or UL-
listed conduit fittings for wet locations complying with UL514B.
• Seal all unused openings tightly.
Ground faults, unreliable and highly resistive connections due to Wire Nuts ®
Potential damage to or failure of the inverter.
• Do not use Wire Nuts ® .
Electrical installations
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.
• Before connecting the inverter to the utility grid, contact your local grid operator. The
electrical connection of the inverter must be carried out by qualified persons only.
• Ensure that no cables used for electrical connection are damaged.
6 Electrical Connection SMA Solar Technology AG
Installation Manual STP12-24TL-US-IA-en-16 26