Connecting The Switch And Outlet For Secure Power Supply Operation - SMA SUNNY BOY 3.0-US Instructions D'installation

6 Electrical Connection
6.5 Connecting the switch and outlet for secure power
supply operation
Neutral and grounding conductor of output for secure power supply
permanently connected
The inverter's output for secure power supply includes a permanent connection between
neutral and grounding conductor, which cannot be disconnected.
Do not connect loads that require a stable electricity supply to the outlet for
secure power supply operation.
Secure power supply operation must not be used for loads that require a stable electricity
supply. The power available during secure power supply operation depends on the solar
irradiation on the PV system. Therefore, power output can fluctuate considerably depending
on the weather or may not be available at all.
• Do not connect loads to the outlet for secure power supply operation if they are
dependent on a stable electricity supply for reliable operation.
Requirements:
☐ The technical requirements for connecting the switch and outlet for secure power supply
operation must be met(see Section 10 "Technical Data", page 65).
☐ All electrical installations must be carried out in accordance with the local standards and the
National Electrical Code
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
42 SBxx-1SP-US-41-IA-xx-12
®
ANSI/NFPA 70 or the Canadian Electrical Code
SMA Solar Technology AG
®
CSA C22.1.
Installation Manual