Installation Guide

Table Of Contents

6 Electrical Connection

SMA Solar Technology AG

Installation Manual SBxx-1SP-US-41-IA-xx-10 31

Position Designation

Network ports A and B for connecting a router or network switch

USB port for connecting a USB flash drive (for service purposes)

MFR slot for connection to the multifunction relay

Pin connector BAT is not used

Q Equipment grounding terminals for the equipment grounding conductors

of the PV array

R Communication assembly

Jack DISPLAY for the LED assembly connection in the enclosure lid of the

Connection Unit

6.2 AC Connection

6.2.1 Requirements for the AC Connection

Additionally required material (not included in the scope of delivery):

☐ Conduits (trade size: 21mm (0.75in) or smaller with suitable reducer bushing)

☐ UL-listed raintight or liquidtight conduit fittings (trade size: 21mm (0.75in) or smaller with

suitable reducer bushing)

Requirements on the AC conductors:

☐ The maximum permitted temperature of the terminal block for AC connection of 105°C

(221°F) must be observed.

☐ The conductors with regards to its ampacity, rated temperatures, operating conditions and its

power loss must be made in accordance with the local standards and the National Electrical

Code

ANSI/NFPA 70 or the Canadian Electrical Code

CSA C22.1.

☐ Conductor type: copper wire

☐ Maximum permissible temperature at SB3.0-1SP-US-41, SB3.8-1SP-US-41, SB5.0-1SP-US-41

and SB6.0-1SP-US-41: 75°C (+167°F)

☐ The conductors must be made of solid wire, stranded wire or fine stranded wire. When using

fine stranded wire, bootlace ferrules must be used.

☐ Conductor cross-section: 4mm² to 16mm² (12AWG to 6AWG)

ENGLISH