Installation Guide

MODULE INSTALLATION AND USER MANUAL – PERC AND MONO SERIES
REVISION DATE:
06/19/2017
DOCUMENT #
GE- SA1- 0006
PAGE:
13 OF 14
MISSION SOLAR ENERGY - MSE CONTROLLED- PROPRIETARY & CONFIDENTIAL - RELEASED
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REVISION: R4 RELEASE DATE: 11/16/2016
(or series string of modules so connected) shall be connected according to the maximum series
fuse as specified. So recommended series connection of module open voltage should not exceed
80% limits range of the system voltage and the fuse should be connected at end of each array.
 The installation instructions specify that Grounding is achieved through securement to the array
frame. The array frame shall be grounded in accordance with NEC Article 250.
11.3. CONNECTORS
 Keep connectors dry and clean, and ensure that connector caps are hand tight before connecting
the modules.
 Do not attempt to make an electrical connection with wet, soiled, or otherwise faulty connectors.
 Avoid sunlight exposure and water immersion of the connectors. Avoid allowing connectors to
rest on the ground.
 Check for same kind of cable connectors that are UL and Canadian code complaint.
 Faulty connections can result in arcs and electrical shock.
 Check that all electrical connections are securely fastened.
 Make sure that all locking connectors are fully engaged and locked.
11.4. DIODES
 The junction boxes used with Mission Solar Energy Modules contain bypass diodes wired in
parallel with the PV cell strings.
 In the case of partial shading, the diodes bypass the current generated by the non-shaded cells,
thereby limiting modules heating and performance losses. Bypass diodes are not over-current
protection devices.
 Bypass diodes divert current from the cell strings in the event of partial shading. In the event of
a known or suspected diode failure, installers or maintenance providers should contact Mission
Solar Energy.
 Never attempt to open the junction box by yourself.
12.0 MAINTENANCE
12.1. VISUAL INSPECTION
Mission Solar Energy recommends that PV systems be periodically inspected by the installer, or other
qualified person. The purpose of the PV system inspection is to ensure that all system components are
functioning properly. At a minimum, this inspection should confirm the following:
 All cables and connector attachments are undamaged and properly secured.
 No sharp objects are in contact with the PV module surfaces.
 PV modules are not shaded by unwanted obstacles and/or foreign material.
 Mounting and grounding components are tightly secured with no corrosion.
 Defects should be addressed immediately.
12.2. CLEANING