SMA SC 250U - Manual (Page 51)

SMA America, LLC 6 Electrical connection
Installation Guide DISU_SCUS-IA-IUS111711 51
6.4.5 Connecting AC cables to busbars
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High voltages are present in the live components of the low voltage grid.
Death resulting from burning and electric shock.
• Pay close attention to all safety precaution measures regarding the low-voltage grid.
• Switch off the AC and DC circuit breaker/load break switches and secure it against accidental
switching on.
• Ensure that no voltage is present.
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Danger of fire caused by wrong arrangement of AC cables.
Wrong arrangement of AC cables can result overheating of the cables and causes the danger of
fire.
• Arrange the cables as described in 6.4.2 ”Arranging AC cables”, page 41.
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Danger of fire caused by improper connection to the power distribution grid.
• To reduce the risk of fire, do not connect to an AC load center (circuit breaker panel) having
multi-wire branch circuits connected.