
6 Electrical Connection
SMA Solar Technology AG
Installation Manual
SBxx-1SP-US-40-IA-xx-15
42
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
®
ANSI/NFPA 70 or the
Canadian Electrical Code
®
CSA C22.1.
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 bush)
☐ UL-listed raintight or liquidtight conduit fittings (trade size: 21 mm (0.75 in) or smaller with
suitable reducer bush)
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 on・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
®
CSA C22.1.
☐ 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)
ENGLISH
Содержание SB3.0-1SP-US-40
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