Compatible racking systems for Microinverters

ManualsBrandsEnphase ManualsSolar & Wind PowerMc4 DC Inputs, Micro-Inverter, 295W, 240Vac

TECHNICAL BRIEF

Compatible Racking Makes and Models for Mounting Enphase

Microinverters

Purpose

This document is not intended to be an exclusive list of racking manufacturers compatible with the Enphase

Microinverter

System. Instead, it lists racking products that Enphase has validated for compatibility through field installations or lab

evaluations. Enphase has validated that the products in this document work with our current product lines, but future

microinverter products may not be compatible.

NOTE: All recommendations included in the Enphase Microinverter Operations and Installation Manual must be

maintained, including, but not limited to:

• Do not install the microinverter in a location where it is exposed to prolonged periods of direct

sunlight.

• Install the microinverter under the PV module to avoid direct exposure to rain, UV, and other

harmful weather events. Do not expose the AC or DC connectors to rain or condensation

before the connectors are mated.

• Install the microinverter at a distance greater than ½” from the module backsheet.

• Install the microinverter at a distance greater than ¾” from the roof.

NOTE: All trademarks are the property of their respective owners.

Grounding Options for Enphase Microinverters

Grounding Options for the IQ 6 and IQ 6+ Micros

The Enphase IQ6 and IQ6+ Microinverters include a double-insulated outer enclosure and do not bond the DC

conductors to ground internally. The Q Cable includes only two line (hot) conductors with no neutral and no ground. In an

IQ Microinverter system, the racking, module frames, and IQ Microinverter mounting flange/lid are all bonded with

mounting hardware, such as UL2703 grounding hardware and then grounded as required by the jurisdiction.

Grounding Options for the M-Series and S-Series Microinverters

The Enphase M215-IG, M250, C250, S230, and S280 Microinverters are grounded through the grounding conductor in

the Engage Cable. These microinverters require no additional ground. It is not necessary, but an additional bond can be

provided between the microinverters and the racking systems using UL2703 listed hardware or a listed grounding

washer, such as the WEEB grounding washer from Burndy Electronics. If a grounding path is established between the

microinverters, the racking, and the module frames, it may be acceptable to the jurisdiction to provide the racking and

modules’ equipment grounding through the Enphase Engage Cable. The code case for this grounding application can be

found in an Enphase technical brief at:

http://enphase.com/global/files/Equipment_Grounding_in_an_Enphase_IG_System-v2703.pdf

Grounding Options for the M215 Original and Previous Generation Microinverters

The ground clamp provided on the mounting flange of the M215 Original Enphase Microinverters accepts #8 through #6

AWG grounding electrode conductors. This document also details alternative grounding clip solutions for each rail type, if

available.

Summary of content (20 pages)

PAGE 1
TECHNICAL BRIEF Compatible Racking Makes and Models for Mounting Enphase Microinverters Purpose This document is not intended to be an exclusive list of racking manufacturers compatible with the Enphase Microinverter System. Instead, it lists racking products that Enphase has validated for compatibility through field installations or lab evaluations. Enphase has validated that the products in this document work with our current product lines, but future microinverter products may not be compatible.
PAGE 2
Compatible Racking CSA has evaluated and approved the Burndy / Wiley Electronics WEEB grounding washers for use with the Enphase Microinverter. Where the compatible racking models have listed grounding washers available, we list the Burndy / Wiley Electronics part numbers in sections 2 and 3 of this document.
PAGE 3
Compatible Racking Modifications to the M215-IG and M250 Lid In the first quarter of 2014, Enphase began manufacturing M215-IG and M250 Microinverters with a new lid. These microinverters no longer have a grounding channel, grounding hole, and grounding clip, and the lids have been shortened by about an inch. The S230 and S280 Microinverter Products In 2015, Enphase began shipping the S230 and S280 Microinverters with a cast lid.
PAGE 4
Compatible Racking Wire Management Wire management is critical to ensuring the long-term reliability of an Enphase system. This section contains a list of wire clips that can support and manage the AC and DC conductors in an Enphase system. You can find more comprehensive wire management information at www.enphase.com.
PAGE 5
Compatible Racking Wire Management Products for the Enphase Engage Cable The following products work with the Enphase Engage Cable. • • 5 The Enphase Engage 240V, single-phase cable has an outside diameter of 10.75mm (0.425”). The Enphase Engage 208V, three-phase cable has an outside diameter of 11.75mm (0.463”).
PAGE 6
Compatible Racking Racking Products • Section 1 lists rail-based racking systems that work without modification, using the racking manufacturer’s standard microinverter attachment hardware. • Section 2 lists railless racking systems. These systems may require a custom bracket or attachment method and often require that the cable be supported with a clip to the module frames.
PAGE 7
Compatible Racking Everest Solar Systems Module Rail Fastener Information Grounding Washer CrossRail (pitched roofs) Microinverter mounting kit (200315) WEEB-KMC XpressRail (pitched roofs) Microinverter mounting kit (200315) WEEB-KMC Dome System S/D (ballasted) Microinverter mounting kit (200315) WEEB-KMC http://www.everest-solarsystems.com/home.
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Compatible Racking mounts4solar Module Rail Rail 6.0 Fastener Information Grounding Washer M8 SS hammer head bolt http://mounts4solar.com/ MSI (Mounting Systems, Inc.
PAGE 9
Compatible Racking PV Racking Module Rail PV Racking Pitched Roof Fastener Information 3/8” hardware Grounding Washer SGB4 Lug http://www.pvracking.us/ RBI Solar Module Rail Fastener Information RBI Solar GM-I (Portrait) Enphase compatibility kit RBI Solar RM-I Bolt to support bar (under module) Grounding Washer http://www.rbisolar.com/ Renusol Module Rail Renusol VS Fastener Information T-bolt and hardware Grounding Washer WEEB-SMC http://www.renusolamerica.
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Compatible Racking Solar SpeedRack Module Rail HRS160 Fastener Information Direct Mount or Bracket Mount Grounding Washer Integrated http:www.solarspeedrack.com SolarWorld Module Rail Sunfix Plus Fastener Information SK0145- T40 truss head screw, M8x16mm, SA0295- M8 channel nut Grounding Washer WEEB-PMC http://www.solarworld-usa.com/ Sollega Module Rail Fastener Information Grounding Washer Top spring nut with 5/16” hex head bolt InstaRack http://www.sollega.
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Compatible Racking Unirac Module Rail Fastener Information Grounding Washer SolarMount: Light, Standard, and HD Rails ¼” t-bolt, Kep nut, for top rail mount (UL2703 listed) – Unirac p/n: 008011S Kep nut attached lock star washer, SST (UL2703) SunFrame MicroRail MLPE Mount Assembly: Module frame mounting bracket, drilled and tapped with5/16” serrated flange hex bolt (UL2703 Listed) – Unirac p/n 008014M Serrated flange on hex bolt, SST and bonding pin, SST RoofMount 1.0 and 2.
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Compatible Racking Ecolibrium Solar Module Rail Eco-X Rail-less Fastener Information Microinverter attachment bracket ECO-001-104 (UL2703 Listed) Grounding Washer ECO-001-104 http://www.ecolibriumsolar.com/ Nissei Metals Mounting System Solar Angle Fastener Information Grounding Washer Microinverter attachment bracket http://www.nissei-metals.com/solarangle/ Pegasus Solar Mounting System LightSpeed Mount Fastener Information Grounding Washer Enphase Frame Mount bracket http://pegasussolar.
PAGE 13
Compatible Racking Unirac Mounting System SunFrame MicroRail Fastener Information MLPE Mount Assembly: Module frame mounting bracket, drilled and tapped with5/16” serrated flange hex bolt (UL2703 Listed) – Unirac p/n 008014M Grounding Washer Serrated flange on hex bolt, SST and bonding pin, SST http://unirac.com/ Zep Solar Mounting System Zep Solar Fastener Information Zep Groove adapter bracket Grounding Washer Integrated into Bracket http://www.zepsolar.
PAGE 14
Compatible Racking WEEB Installation Procedure If using WEEBs or star washers in your installation, follow these steps: 1. Install a minimum of one grounding washer per microinverter. 2. For each microinverter, install stainless steel 1-1/2” fender washers on the topside of the mounting bracket for the bolt that passes through the grounding washer. 3. Torque the microinverter fasteners to the values listed (minimum torque requirements).
PAGE 15
Compatible Racking Enphase Microinverter Dimensions If a specific racking model is not listed in this document, use the following microinverter dimensional diagrams to verify compatibility. IQ 6 and IQ6+ Microinverters (beginning first quarter, 2017) 15 © 2017 Enphase Energy Inc. All rights reserved.
PAGE 20
Compatible Racking M190 and D380 Microinverters We continue to evaluate racking models for compatibility. Please check the Enphase Energy website for product updates and announcements or contact Customer Support regarding a specific racking compatibility. Enphase Energy website: http://www.enphase.com Enphase Customer Support: http://www.enphase.com/en-us/support/contact 20 © 2017 Enphase Energy Inc. All rights reserved.