2635 W. 7
th
Place, Eugene, Oregon 97402, USA
8
Valid from February 2017
www.grapesolar.com
8 Tel: 1-877-264-1014 (toll free), 1-541-349-9000, Fax: 1-541-343-9000
PHOTOVOLTAIC MODULES SAFETY
AND INST
ALLATION MANUAL Rev.
P
VALID IN NORTH AMERICA ONLY
3.
Electrical Connection
3.1
All installations must be performed in compliance with the National Electrical Code (NEC) and
any applicable local codes by authorized personnel. If the module is installed in Canada,
installation shall be in accordance with CSA C22.1, Safety Standard for Electrical Installations,
Canadian Electrical Code, Part 1.
3.2
Modules may be connected in series and/or in parallel to achieve the desired electrical output.
When serial connected, all modules must have the same amperage, but the maximum open
circuit voltage of the system must not exceed the specified maximum system voltage of the
modules. When parallel connected, all modules must have the same voltage.
3.3
Do not use modules with different electrical performance or physical properties in the same
system.
3.4
To prevent untrained personnel from disconnecting the modules when under load, which may
cause serious bodily injury or death, all Grape Solar PV modules are equipped with factory-
installed PV wires and MC-4-comparable connectors with locking safety clips. Once connected,
the connector requires the use of a special tool to disconnect module-to-module connections.
3.5
When making module-to-module connections, the polarities of cables and terminals must be
matched. Failure to do so may result in damage to the module and void the module warranty.
3.6
Use cables and wires with adequate cross-sectional areas (min. of 12AWG) and suitable MC-4-
comparable connectors which are approved for use at the maximum short-circuit current of the
module.
3.7
Over-current device (e.g. fuse or circuit breaker) whose rating is not greater than the value of the
protective fuse marked on the back of the module must be serial connected with each module or
string of modules when reverse current is anticipated to exceed the value of the module
protective fuse.
3.8
The junction box contains factory installed blocking diodes and is not designed to be field
accessible or maintainable, and should not be opened under any circumstances. Opening the
junction box will void the warranty.
