SMA SC 250U - Manual (Page 20)

5 Installation of the Disconnect Unit SMA America, LLC
20 DISU_SCUS-IA-IUS111711 Installation Guide
5.1.4 Minimum clearances
Figure 6: Minimum clearance between inverter and Disconnect Unit side-by-side
The minimum clearance between Sunny Central and Disconnect Unit side-by-side is required for
bending radii for inserting cables through side-entry (see section 5.4 and section 5.5). Minimum
clearance can be reduced down to 3 in. (75 mm) by inserting the cables through bottom entry.
Figure 7: Minimum clearance between inverter and Disconnect Unit face-to-face
The minimum between Sunny Central and Disconnect Unit face-to-face has to be 4 ft. (1,220 mm) if
one cabin shall be opened at the same time. Refer to National Electrical Code
®
ANSI/NFPA 70 for
detailed information about the requirements.
/05*$&
Increased clearance
The clearance has to be raised if both cabinets shall be opened at the same time. Refer to National
Electrical Code
®
ANSI/NFPA 70 for detailed requirements.