Electrical Connection SMA America, LLC
40 SB50US-80US-eng-IUS112633 Installation Guide
6.4 AC Connection
6.4.1 AC Connection Requirements
For all AC cable connections to the Sunny Boy, use a max. 6 AWG copper wire that is designed for
+194 °F (+90 °C) – even if voltage drop and other considerations mean that the use of larger cable
cross sections is required. Use only cables made of solid wire or rough-wire strands. Do not use fine-
wire strands.
CAUTION
Risk of fire
Risk of cable fire due to overcurrent.
• The electrical installation must include overcurrent protection for the AC output circuit.
• Set up the overcurrent protection for 50 A maximum.
Carry out all electrical installations according to all of the applicable on site electrical
standards and the National Electrical Code
®
(NE, ANSI/NFPA 70).
See National Electrical Code, Section 690-64(b) (2).
For installations in Canada, observe the applicable Canadian standards.
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