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5 ac connection, 1 ac connection requirements, Ac connection – SMA SB 5000-US User Manual

Page 42: Ac connection requirements, 5 ac connection 6.5.1 ac connection requirements

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Electrical Connection

SMA America, LLC

42

SB50US-80US-IA-en-37

Installation Manual

6.5 AC Connection

6.5.1 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.

CAUTION

Rist of fire
Overcurrent may lead to a cable fire.

• The electrical installation must include overvoltage protection for the AC output

circuit.

• Set up the overvoltage protection for a maximum of 50 A.

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.

Only use solid wire or stranded wire

• Do not use fine-wire strands.
• Use the free of charge "Sunny Design" at www.SMA-America.com to design your PV

plant.

Ambient temperature
The higher the ambient temperature, the higher the power losses.

• Use cables with large cable cross-sections in installation sites with high ambient

temperatures.

Routing method
The cables heat up during operation. If there are several cables in a conduit, the
temperature of all cables increases.

• Use cables with a large cross-section if you lay several cables in one conduit.

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