SMA 600-US - Manual (Page 27)

SMA America, LLC 6 Electrical Connection
Installation Manual CU600-1000US-IA-en-10 27
6.2 Overview of the Connection Area
6.2.1 Enclosure Openings
Figure 9: Enclosure openings of the Connection Unit
Electrical installations
All electrical installations must be made in accordance with the local electrical standards and
the National Electrical Code
®
ANSI/NFPA70 or the Canadian Electrical Code
®.
CSA C22.1.
• Use only +194°F (+90°C) copper wire for all DC wiring connections to the screw
terminals between the PV modules and the Connection Unit and between the Connection
Unit and the inverter.
• The DC input and output circuits are isolated from the enclosure and that system grounding,
if required by Section 250 of the National Electrical Code
®
, ANSI/NFPA 70, is the
responsibility of the installer.
• Make sure that no damaged cables are being used.
Item Designation
A Output opening in the enclosure for connecting the conduits
(diameter: 1
23
⁄
64
in. (34.5 mm) to 1
3
⁄
8
in. (34.7 mm))
B Input opening in the enclosure with filler plugs for connecting the conduits
(diameter: 1
3
⁄
32
in. (27.8 mm) to 1
7
⁄
64
in. (28.0 mm))