Electrical connection SMA America, LLC
34 SB30-40US-IUS103030 Installation Guide
6 Electrical connection
DANGER
High voltages are present on the AC and DC cables.
Death or serious injuries due to touching the voltage-conducting cables.
• Always wait a minimum of 5 minutes for stored potentials in the Sunny Boy to
discharge completely before opening the enclosure.
• Always connect the wires to the Sunny Boy in the following sequence.
NOTICE
Ingress of water when mounting and installing the Sunny Boy.
Damage to the Sunny Boy.
• Do not open the Sunny Boy when it is raining or when high humidity is present
(>95%).
NOTICE
Touching the components can result in electrostatic discharges.
Damage to components.
• Ground yourself before touching a component.
NOTICE
Ground faults, unreliable and resistive connections due to faulty wire nuts.
• Avoid using wire nuts to join any wires together or to make any connections
anywhere in the PV system.
Electrical installations
All electrical installations must be done in accordance with all local electrical codes and
the National Electrical Code
®
, ANSI/NFPA 70. For installation in Canada the installations
must be done in accordance with applicable Canadian standards.
Before connecting the Sunny Boy to the electrical utility grid, contact the local utility
company. This connection must be made only by qualified personnel.
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