Connecting The Switch And Outlet For Secure Power Supply Operation - SMA SUNNY BOY 3.0-US Instrucciones De Instalación

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.
Requirements:
☐ The technical requirements must be met for connecting the switch and outlet for secure power
supply operation (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 to install 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):
☐ One standard outlet
☐ One 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.
• Connect 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)
42 SBxx-1SP-US-41-IA-xx-10
®
ANSI/NFPA 70 or the Canadian Electrical Code
SMA Solar Technology AG
®
CSA C22.1.
®
CSA C22.1.
Installation Manual