SMA SUNNY BOY STORAGE 3.8-US Instructions D'installation page 44

6 Electrical Connection
Residual-current device:
☐ SMA Solar Technology AG recommends installing a residual-current device (type A) between
the inverter's output for secure power supply and the outlet for secure power supply operation,
which trips at a residual current of 30 mA. Observe all locally applicable standards and
directives when doing so.
Additionally required material (not included in the scope of delivery):
☐ 1 standard outlet
☐ 1 standard switch (e.g. light switch)
☐ 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)
Procedure:
• Connect the outlet for secure power supply operation
• Connecting the switch for secure power supply operation
Connect the outlet for secure power supply operation
Requirements for the conductors:
☐ 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
☐ Conductor type: copper wire
☐ 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: 2.5 mm² to 4 mm² (14 AWG to 12 AWG)
☐ Maximum length of conductors: 10 m (33 ft)
Procedure:
1. Ensure that the inverter is disconnected from all voltage sources (see Section 8, page 65).
2. Remove the sealing plug from the enclosure opening for connecting the outlet for secure
power supply operation.
3. Insert the conduit fitting into the opening and tighten from the inside using the counter nut.
4. Attach the conduit to the conduit fitting.
5. Guide the conductors into the inverter.
6. To connect the equipment grounding conductor of the socket for secure power supply
operation to an equipment grounding terminal, first strip off the equipment grounding
conductor insulation by 18 mm (0.71 in).
44 SBSxx-US-10-IA-xx-14
SMA Solar Technology AG
®
CSA C22.1.
Installation Manual