Installation Guide

SM
SOLAR
MOUNT
INSTALLATION GUIDE
PAGE
SPLICE & THERMAL BREAK
NOTE: THE ABOVE IMAGES ARE SAMPLE CONFIGURATIONS TO ILLUSTRATE THE REQUIREMENTS FOR SM SYSTEM GROUNDING THROUGH ENPHASE MICROINVERTERS DESCRIBED ON PAGE H
CONTINUOUS RAIL & ELECTRICAL BONDING SPLICE
Enphase Microinverter (MI) Requirements
(Model No. M215 & M250)
3 Microinverters sharing same trunk cable & rails
EXPANSION JOINT W/GROUNDING LUGS & COPPER JUMPER
Enphase Microinverter (MI) Requirements
(Model No. M215 & M250)
3 or more Microinverters sharing same trunk cable & rails
EXPANSION JOINT W/O ELECTRICAL BONDING CONNECTION
Enphase Microinverter (MI) Requirements
(Model No. M215 & M250)
MIn. 3 Microinverters on each side of thermal break
THERMAL BREAK
Min. 3 microinverters
on each side of thermal break
Min. 3 microinverters sharing
same trunk cable & rails
Min. 3 microinverters sharing
same trunk cable & rails
Less than 3 microinverters
on each side of thermal break
RAIL SPLICE
RAIL SPLICE
RAIL SPLICE
RAIL SPLICE
NOT
ACCEPTABLE
MINIMUM LAYOUT REQUIREMENTSMINIMUM LAYOUT REQUIREMENTSMINIMUM LAYOUT REQUIREMENTS
ELECTRICAL GROUNDING W/
ENPHASE MICROINVERTER FOR
ELECTRICAL BONDING SPLICE EXPANSION JOINT USED AS THERMAL BREAK W/
GROUNDING LUGS & COPPER JUMPER
EXPANSION JOINT USED AS THERMAL BREAK W/O
ELECTRICAL BONDING CONNECTION
THERMAL BREAK
3 or more microinverters sharing
same trunk cable & rails
I