SMA SUNNY TRIPOWER X 20-US - Connecting the AC Conductors

6 Electrical Connection
SMA Solar Technology AG
Operating manualSTPxx-US-50-BE-en-1140
Procedure See
5. Connect signal source to digital inputs (optional) Section6.7, page45
Section6.8, page46
6. Connect the PV modules. Section6.9, page49
6.4 Connecting the AC conductors
Additionally required material:
☐ 1 conduit (trade size: 27mm (1in) or smaller with suitable reducer bush)
☐ 1 rain-tight conduit fitting or conduit fitting for wet locations complying with UL514B (trade
size: 27mm (1in) or smaller with suitable reducing bush)
Requirements:
☐ The AC and DC electric circuits are isolated from the enclosure. If required by the National
Electrical Code® ANSI/NFPA 70 or Canadian Electrical Code® CSA C22.1, the installer is
responsible for grounding the system.
☐ 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.
☐ The grid voltage must be within the permissible range. The exact operating range of the
inverter is specified in the operating parameters .
Procedure:
1. Disconnect the miniature circuit breaker from all 3 line conductors and secure against
reconnection.
2. Ensure that the DC load-break switch is in the O
position / OFF.