Additional Grounding Of The Enclosure - SMA SUNNY TRIPOWER 12000TL-US Installation Manual

Electrical Connection
6.5

Additional Grounding of the Enclosure

The inverter is equipped with a grounding terminal with two connection points on the DC side for
additional grounding (e.g. use of a grounding electrode).
The ground terminal is yellow/green and identified as follows:
• Equipment grounding terminal: symbol
• Grounding electrode conductor: labeling GEC
Cable requirements:
☐ The cable must be designed in accordance with the local installation requirements and for
temperatures of over +194°F (+90°C).
☐ Cable type: copper wire
☐ Conductor cross-section: 8 AWG to 2 AWG (10 mm² to 35 mm²)
Requirement:
☐ The conduits must be correctly connected to the inverter.
Procedure:
1.
Danger to life due to electric shock
• Disconnect the inverter from all voltage sources (see section 9, page 44).
2. If the protective cover is mounted, loosen the screws of the DC protective cover using an Allen
key (AF 3) and remove the DC protective cover.
3. Lead the equipment grounding conductor or the cable of the grounding electrode through the
installed conduit into the interior of the inverter.
4. Strip the equipment grounding conductor or the line of the grounding electrode
23
by / in. (18 mm).
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5. Connect the equipment grounding conductor to the connection point with the symbol
and tighten with a screwdriver (blade size: 6 mm) (torque: 51 in-lb. (5.8 Nm)).
6. Connect the grounding electrode line to the connection point GEC and tighten with a
screwdriver (blade size: 6 mm) (torque: 51 in-lb. (5.8 Nm)).
7. Make sure the equipment grounding conductor or the grounding electrode line is firmly in place.
8. Re-attach the DC protective cover. Tighten all four
screws with an Allen key (AF 3) in the order
1 to 4 (torque: 31 lb-in. (3.5 Nm)).
38 STP12_15_20_24TL-US-IA-en-11
SMA America, LLC
Installation Manual