Sma SB 6000TL‑US Installation User Manual download pdf (Page 40)

5 Electrical Connection SMA America, LLC

40 SB6-11TL-US-IA-en-13 Installation Manual

5.5.1 DC Cable Requirements

DC cabling to the Combiner Box

Use copper wire that is rated for 10 to 6 AWG (6 to 16 mm²) and 194°F (90°C) (National

Electrical Code

690.35).

DC cabling Between the Combiner Box and the Inverter

Use copper wire that is rated for min. 8 AWG (10 mm²) and 194°F (90°C) (National Electrical

Code

690.35).

5.5.2 Connecting the DC Cables in the DC Disconnect

1. Lay a conduit from the Sunny Boy Combiner Box to the DC Disconnect

(see Section 5.2"Inserting the Cables in the DC Disconnect",page31).

2. Open the DC Disconnect as described in Section 8.3"Opening the DC Disconnect",page58.

3. Pull the DC cable from the Sunny Boy Combiner Box through the conduit into the DC Disconnect.

4. Connect the grounding conductor to terminal (B)

for the grounding conductor.

If necessary:

Connect the grounding cable of the PV frame to

terminal (A) for the grounding conductor.

Only use solid wire or stranded wire

• Use the free of charge "Sunny Design" at www.SMA-America.com to design your PV

plant.

Open terminals fully before insertion of the cables.

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Sma SB 6000TL‑US Installation User Manual Page 40