Enphase Engage Cable Installation Manual
Contents
1. a a IUD ret E 16 Replacing or Removing the Terminator nennen 17 Step 7 Connect the Engage Cable to Junction Box es 18 Step o Connect tie PV IWIOOUlBS Netus esu eue iu se adque 19 Step 9 Verify and Commission a aaa 19 CTE q DA 20 Appendix Sample Wiring Diagram nme nnn nenne nenas 21 3 O Enphase Energy Inc 2014 141 00013 Rev 05 Engage Cable Installation Important Safety Information Read this First To reduce the risk of electrical shock and to ensure the safe installation and operation of the Enphase System the following safety indications appear throughout this document Danger Indicates a hazardous situation which if not avoided will result in death or serious injury Warning Indicates an electrical hazard which if not avoided could result in death or serious injury Warning Indicates a hazardous situation which if not avoided could result in death or serious injury Note Follow instructions closely to avoid damage or malfunction to the device and or damage to surrounding property2. 6 COMNMECION SPACING RN EET 6 Voltage Types and Conductor Count 7 Racking OM ONO NY ances TE 7 Cabling Lengt ODUONS TT 7 Planning for Cable Lengths and 8 ADOU the Disconnect O01 u uu Lu ua 9 Enphase Engage Cable and Accessories Installation 10 STATON OCC uuu uU ul n 10 ejosdem 11 Step 2 Install the AC Branch Circuit Junction Box 12 Step 3 Plan Cut and Position the Engage Cable 13 Step 4 Attach the Microinverters to the Racking 14 Step 5 Dress the Engage Cable a sns arse 15 Step 6 Terminate the Unused End of the Engage Cable 16 Attaching the Terminator
3. Commission energize the system as instructed by the Enphase Microinverter installation and operation manual Enphase Energy Inc 2014 141 00013 Rev 05 Technical Data Specitication System temperature range ambient Cable temperature rating Cable type Cable conductor insulator rating Cable stranding Environmental protection rating UV exposure rating terminator engage coupler and drop connector body Sunlight resistance cable Compliance Conductor size Cable diameter Minimum bend radius Drop connector dimensions Terminator cap dimensions Engage Cable Installation 40 C to 65 C 40 F to 149 F 90 C Dry 90 C Wet TC ER THWN 2 Class K IEC 60529 IP67 UL 746 C F1 UL 1277 UL486A B UL 514C UL6703 UL 9703 IEC 60529 IP67 CAN CSA 22 2 No 21 182 3 12 AWG 1 25 cm 0 49 4 75 inches 12 cm 11 8 cm x 6 0 cm x 3 2 cm 4 64 x 2 36 x 1 25 3 6 cm diameter x 5 1 cm tall 1 4 x 2 20 O Enphase Energy Inc 2014 141 00013 Rev 05 Engage Cable Installation iagram ing D Ir Sample W For information on microinverter installation refer to the manual for the specific microinverter at http www enphase com su IX Append ort WVYOVIG ONIMIM 319 39v5N3 TANVdENS 5 OV QNnoso WaYLNIN SIN3IA38IQnO33 NO SNIQN3d3Q 239 V AVIA Nd 3SVHdN3 yaaa 3104 2 A802 LI
4. Main AC Load Center Refer to the wiring diagram located in the Appendix of this manual for more information Black L1 Black L1 Red L2 Red L2 White Neutral Blue L3 White Neutral Green Ground Green Ground The green wire acts as equipment ground Depending on the Enphase Microinverter model used a continuous GEC for system ground may also be required as described in Step 4 Attach the Microinverters to the Racking 18 O Enphase Energy Inc 2014 141 00013 Rev 05 Engage Cable Installation Step 8 Connect the PV Modules Mount the 60 cell PV modules above the microinverters Connect the DC leads of each 60 cell PV module to the DC input connectors of their corresponding microinverter The status LED on the underside of each microinverter lights green six seconds after DC power is applied It remains lit solid for two minutes followed by six green blinks After that red blinks indicate that no grid is present This is because the system is not yet energized LED on underside of Enphase Microinverter Step 9 Verify and Commission 19 5 b lv Note Prior to final connection to the utility grid ensure that all AC and DC wiring is correct Ensure that none of the AC and DC wires are pinched or damaged Ensure that all junction boxes are properly closed Ensure that all unused connectors are capped Ensure that all connectors are properly seated
5. 7 meter gap is best suited to PV modules installed in landscape orientation Cabling with connectors spaced at 1 025 meter 40 for PV modules in portrait orientation 4 smi MEE T l X ie Ds LEER EE lt 1 025 meters 1 025 meters Cabling with connectors spaced at 1 7 meters 67 for PV modules in landscape orientation CHEER lt 1 7 meters vO 1 7 meters 6 Enphase Energy Inc 2014 141 00013 Rev 05 Engage Cable Installation Voltage Types and Conductor Count The voltage types are either 240 VAC split phase or 208 VAC three phase All cable connectors bear labels indicating the cable voltage designation Typically used for residential applications 240 VAC includes four conductors Three phase 208 VAC cabling includes five conductors and is used for most commercial installations Because Enphase Microinverters output onto two phases three phase cabling balances the phases by rotating conductor use from one microinverter to the next as shown in the following diagram Line 1 Jo N Z N Line 2 a inae 3 __ 1 j O Lp j DT Neutral 1 Ground Line 1 and 2 Line 2 and 3 Line 3 and 1 Ground and Neutral Ground and Neutral Ground and Neutral Racking Compatibility Engage Cabling is compatible with a variety of racking
6. Surge Protection Enphase Microinverters have integral surge protection greater than most traditional inverters However if the surge has sufficient energy the protection built into the microinverter can be exceeded and the equipment can be damaged For this reason Enphase recommends that you protect your system with lightning and or surge suppression devices In addition to having some level of surge suppression it is important to have insurance that protects against lightning and electrical surges Install these devices per vendor instructions T Residential Commercial e Citel DS72 RS 120 surge protector data sheet e Citel DS73 RS G surge protector data e Delta LA 302 lightning arrestor website sheet e 51110 or 51110 001 whole house surge e Delta LA 303 lightning arrestor website protection panel website e Midnight solar surge protection device MNSPD 300 or MNSPD 300FM with flush mount box website 5 Enphase Energy Inc 2014 141 00013 Rev 05 Engage Cable Installation Selecting Cable Type Enphase Engage Cable is available in two different voltage types and two connector spacing options Depending upon installer needs the cable is also available in different lengths Connector Spacing Options The gap between connectors on the cable can be either 1 025 meters 40 or 1 7 meters 67 The 1 025 meter spacing is best suited for connecting PV modules installed in portrait orientation while the 1
7. available for M215 Plan for additional length to reach from one row of PV modules to the next If the PV modules are laid out in multiple rows the distance from one row to the next often requires additional cabling length Account for bend radius When planning cabling turns or loops you must account for a minimum bend radius of 4 75 inches 12 cm Consider additional cabling when installing multiple sub arrays Often an AC branch circuit may be composed of several smaller sub arrays across more than one roof plane In this case O Enphase Energy Inc 2014 141 00013 Rev 05 Engage Cable Installation cut the cable to service each smaller array and connect the sub arrays together using appropriately rated lengths of conduit Accomplish the transition from cable to conduit using an outdoor rated AC junction box as required by the NEC and local code Cover unused connectors with Enphase sealing caps Account for any mixture of PV modules in both portrait and landscape orientation When PV modules are installed in mixed orientation both portrait and landscape orientation there are three choices for cabling 1 Cabling with 1 025 meter spacing between connectors results in cleanest install for the PV modules in portrait orientation For PV modules placed in landscape orientation plan for an unused connector between each PV module to accommodate the required additional distance Cover unused connectors with Enphase watertight sealing
8. caps 2 Cabling with 1 7 meter spacing between connectors results in cleanest install for PV modules in landscape orientation but requires that any additional cable length between PV modules in portrait orientation be coiled and dressed so that cabling does not contact the roof Cover unused connectors with Enphase watertight sealing caps 3 Transition between 1 025 and 1 7 meter spacing cable options using an outdoor rated junction box Install this junction box to the PV racking About the Disconnect Tool The Enphase disconnect tool is a multi function PV tool as shown Enphase AC connectors are tool removable only For instructions on how to disconnect an Enphase Microinverter refer to the manual for the specific microinverter at http www enphase com support Finger pressure point Amphenol H4 disconnect tool Terminator wrench Drop connector release prongs Multi Contact MC 4 disconnect tool Finger pressure point not leave the drop connector uncovered for an extended period If you do not plan to replace the microinverter immediately you must cover any unused connector with a watertight sealing cap Listen for two clicks as the connectors engage Danger Risk of Electrical Shock When disconnecting an Enphase Microinverter do 9 O Enphase Energy Inc 2014 141 00013 Rev 05 Engage Cable Installation Enphase Engage Cable and Accessories Installation To install Engage Cable roll out the
9. desired length of cable and cut it to size Wire one end directly into the junction box at the head of the branch circuit Seal the other end from the environment using an Enphase Branch Terminator The microinverter AC cable connectors then plug into the regularly spaced connectors as shown Follow the detailed instructions in this section For information on microinverter installation refer to the manual for specific microinverters at http www enphase com support Terminator rop connector tie wraps NG S 2 Connects to cabling IE required for some models Installation Procedure Installing the Engage Cable and Accessories involves several key steps 1 Connect the Envoy Install the AC Branch Circuit Junction Box Plan Cut and Position the Engage Cable Attach the Microinverters to the Racking Dress the Engage Cable Terminate the Unused End of the Engage Cable Connect the Engage Cable to Junction Box es Connect the PV Modules Verify and Commission 2 3 4 5 6 7 8 9 Danger Risk of Electrical Shock Due to presence of exposed conductors DO NOT connect the Enphase Microinverters to the utility grid or energize the AC circuit s until you have completed all installation procedures as described in the following sections 10 Enphase Energy Inc 2014 141 00013 Rev 05 Engage Cable Installation Step 1 Connect the Envoy a Connect the Envoy to power and In
10. INSTALLATION MANUAL Enphase Engage Cable and Accessories 141 00013 Rev 05 Engage Cable Installation Contact Information Enphase Energy Inc 1420 N McDowell Blvd Petaluma CA 94954 http www enphase com info enphaseenergy com www enphase com support Other Information Product information is subject to change without notice All trademarks are recognized as the property of their respective owners User documentation is updated frequently Check the Enphase website http www enphase com support for the latest information For Enphase patent information refer to http enphase com company patents 2014 Enphase Energy Inc All rights reserved 2 O Enphase Energy Inc 2014 141 00013 Rev 05 Engage Cable Installation Table of Contents Important Safety Information nnne nennen nne nni 4 IC Til Tj uuu e 4 SANV TUC ONS uuu uuu aasan 4 I 4 The Enphase Engage Cable and Accessories 5 Begire ie A 5 Pans Eee A P EET OE m 5 UI e 5 Gud CENT 5 Lighting Surge uifolr ieio pP 5 SONS C UNG Cable
11. NDYID 33d d3 v338 LINDYID dINV 0 31Od JNO 13NVd NOILNGIYLSIG YO OL 318vO QN3 NO Q3TIVISNI dv2O NS sa k a N33349 TWYLNAN 3LIHN A802 1 3018 c1 aay jl8vO 3OVONd LLL T IERI TJ LY MEM NE ulli L L I L L L L L L la 141 00013 Rev 05 Enphase Energy Inc 2014 21
12. as listed in the microinverter manual You must protect each microinverter AC branch circuit with a 20 amp maximum breaker Measure AC line voltage at the electrical utility connection to confirm that it is within the ranges shown 240 Volt AC Split Phase 208 Volt AC Three Phase L1 to L2 211 to 264 VAC L1 to L2 to L3 183 to 229 VAC L1 L2 to neutral 106 to 132 VAC L1 L2 L3 to neutral 106 to 132 VAC Size the AC wire gauge to account for voltage rise Select the correct wire size based on the distance from the beginning of the microinverter AC branch circuit to the breaker in the load center All components of system wiring must be considered including internal voltage rise within the length of Engage Cable Typically three wire sections and several wire terminations must be quantified There is also some resistance associated with each circuit breaker As all of these resistances are in series they add together Since the same current is flowing through each resistance the total voltage rise is total current times the total resistance For a single phase system the total resistance is equal to two times the one way resistance For a three phase system each of the three line currents and resistances must be calculated Standard guidelines for voltage rise on feeder and AC branch circuit conductors might not be sufficient for microinverter AC branch circuits that contain the maximum allowable microinverters This is due to h
13. e of the drop connector Use one or two additional clips tie wraps or other support scheme to secure the cable between connectors Remove the temporary shipping cap from the Engage Cable Connect the microinverter and listen for two clicks as the two prongs engage Ensure that both latching mechanisms have engaged Ie Note The connector has not been designed for repeated linking and unlinking Repeat steps a through e for all microinverters in the branch Cover any unused connector with a watertight sealing cap Listen for two clicks as the connectors engage Ensure that both latching mechanisms have engaged Note Make sure watertight sealing caps are Iz installed on all unused AC connectors Unused AC connectors are live when the system is energized by the utility Note Do not use the shipping to cover Z unused connectors The shipping cap does not provide an adequate environmental seal Enphase watertight sealing caps are required for protection against moisture ingress O Enphase Energy Inc 2014 141 00013 Rev 05 Engage Cable Installation indicates an Ingress Protection IP rating against dust and liquids This specific rating of IP67 indicates that this connector protects against all dust particles and immersion in liquid Note Enphase watertight sealing caps are IP67 rated Within the term IP67 IP Z Note If you need to remove a watertight sealing cap you must use the Enphase disco
14. gth of 2 5 mm 12 AWG outdoor rated cable with integrated connectors for Enphase Microinverters These connectors are preinstalled along the Engage Cable at intervals to accommodate PV module widths The microinverters plug directly into the cable connectors Compatibility The cabling is compatible with a variety of PV racking systems Refer to the PV Racking Compatibility document the Enphase website http www enphase com support for details Parts and Tools Required In addition to the Enphase Microinverters Enphase Envoy Communications Gateway PV modules racking and associated hardware you will need the following items Enphase Equipment Enphase Engage Cable See page for options Sealing caps as needed for any unused drops on the cable Terminators as needed for AC branch circuit cable ends Cable clips Enphase disconnect tool number 2 and 3 Phillips screwdrivers can be substituted See About the Disconnect Tool on page 9 for more information Other Items Outdoor rated weather proof AC junction box es Gland or strain relief fitting one per AC junction box Oc 12 Continuous GEC grounding electrode conductor Required only for M215 60 2LL S22 523 524 Not required for M215 60 2LL S22 IG 523 S24 IG or M250 60 2LL S22 523 or 524 Torque wrench sockets wrenches for mounting hardware Adjustable wrench or open ended wrench for terminators Lightning
15. i 5 PP Safety Instructions Danger Risk of Electrical Shock Do NOT connect or disconnect the photovoltaic module from the Enphase Microinverter without first removing AC power from the photovoltaic system Warning Be aware that only trained solar professionals should install and or replace the Engage Cabling System or connect the Enphase Microinverter to the electrical utility grid Warning Perform all electrical installations in accordance with all local electrical codes and the National Electrical Code NEC ANSI NFPA 70 Warning The AC connectors on the cabling are rated as a disconnect only when used with an Enphase Microinverter Warning Connect the Enphase Microinverter to the electrical utility grid only after receiving prior approval from the utility company and any applicable AHJ authority having jurisdiction Warning Do not use Enphase equipment in a manner not specified by the manufacturer Doing so may cause death or injury to persons or damage to equipment Note Before installing the cabling read all instructions and cautionary markings in the user manual on the Enphase equipment and on the all other photovoltaic equipment 6 P P gt P gt P Audience This manual is intended for use by professional installation and maintenance personnel 4 Enphase Energy Inc 2014 141 00013 Rev 05 Engage Cable Installation The Enphase Engage Cable and Accessories The Engage Cable is a continuous len
16. igh inherent voltage rise on the AC branch circuit For more information refer to our Technical Brief on Voltage Drop Considerations http www enphase com support Install an appropriate junction box at a suitable location on the PV racking system You can center feed the branch or you can install the V junction box at the end of a row of PV modules voltage rise in a fully populated branch This practice greatly reduces the voltage rise as compared with an end fed branch To center feed a branch divide the circuit into two sub branch circuits protected by a single overcurrent protection device OCPD Provide an AC connection from DI the AC junction box back to the electrical utility connection using equipment and practices as required by the NEC and local jurisdictions Best Practice Center feed the branch circuit to minimize Enphase Energy Inc 2014 141 00013 Rev 05 Engage Cable Installation Step 3 Plan Cut and Position the Engage Cable The Engage Cable is a continuous length of 12 AWG 2 5 outdoor rated cable with integrated connectors for microinverters These connectors are preinstalled along the Engage Cable at intervals to accommodate PV module widths The microinverters plug directly into the connectors and the Engage Cable is terminated into the junction box that feeds electricity back to the system AC disconnect Cable for either 240 VAC single phase typical for
17. ile it is connected to the power supply If you open the terminator again following the installation you destroy the latching mechanism and the unit cannot be used again Damage to the latching mechanism cannot be seen with the naked eye Label the opened terminator and dispose of it immediately to ensure that it cannot be reused accidentally Note The terminator is intended for one time use only a Remove the terminator by cutting it off with a diagonal cutter set flush against the end of the cable b Replace the terminator as described in the previous steps beginning on page 16 17 O Enphase Energy Inc 2014 141 00013 Rev 05 Engage Cable Installation Step 7 Connect the Engage Cable to Junction Box es a Connect Engage Cable into the AC branch circuit junction box using an appropriate gland or strain relief fitting The cable requires a strain relief connector with an opening of 1 3 cm 0 5 inches in diameter b Connect the Engage Cable into additional junction boxes as needed to transition to zm ca conduit between smaller sub arrays _ _ _ Note The Engage Cable is stranded with Class K wire Use appropriate connectors when Single AC branch circuit with smaller sub arrays joined to a single AC junction box Branch limit applies transitioning to field cable Multi Circuit AC Junction Box AC junction box AC junction box PV Load Center
18. intended for one time use only If you open the terminator a Remove 60 mm 2 5 inches of the cable sheath from the conductors b Slide the hex nut onto the Engage Cable c Insert the Engage Cable all the way into the wire organizer up to the stop O rin d Bend the individual wires back cable seal be O ring into the recesses in the wire organizer so that they angle wire organizer cap back toward the cable e Cutthe individual wires so that no excess extends outside of the wire organizer The portions that angle back will need to extend enough to fit neatly into the 0 5 cm 0 2 in recesses in the wire organizer and flush with the edge of the cap 16 O Enphase Energy Inc 2014 141 00013 Rev 05 Engage Cable Installation f Screw the hex nut onto the cap Never unscrew the hex nut as this can twist and damage the cable g Hold the cap with an Enphase disconnect tool or insert a 2 Phillips screwdriver h Use a 22 mm 7 8 inch wrench to tighten the hex nut until the latching mechanism is screwed all the way to the base Useatie wrap or cable clip to attach the cable to the PV racking so that the Engage Cable and terminator do not touch the roof j Ensure that all cabling is located underneath the PV module Replacing or Removing the Terminator If the terminator must be replaced or removed observe the following Danger Risk of Electrical Shock Never open remove or replace the terminator wh
19. inverters saving money and increasing safety Note When mixing microinverter models on a single branch you must e Adhere to the smaller branch limit Use a if one or more of the microinverters in the branch requires it O Enphase Energy Inc 2014 141 00013 Rev 05 Engage Cable Installation Step 5 Dress the Engage Cable 15 Ie Adhere to the following requirements Do not expose the connection to directed pressurized liquid water jets etc Do not expose the connection to continuous immersion Do not hang any weight from the cable system Use only the connectors and cables provided Do not allow contamination or debris in the connectors Use the cable and connectors only when all parts are present and Fit the connection using only the prescribed tools There are two release holes in the cable connector These holes are used to disconnect the connector Keep these release holes clear and accessible Attach the Engage Cable to the rack using the included clips m pe SSS or you may use tie wraps F The cable clips are designed so that the drop cable from the mE Er a microinverter can also be dressed into the clip underneath the cable Dress any excess cabling in loops so that cabling does not contact the roof Warning Tripping Hazard Do not leave the cabling to rest on the roof Loose cables might become a tripping hazard Secure all cables Place tie wraps or clips on either sid
20. le widths vary by manufacturer On the Engage Cable connectors are spaced at intervals to allow for the widest PV modules compatible with Enphase Microinverters If narrower PV modules are used it may be necessary to account for excess cable by looping the cable at suitable intervals 13 O Enphase Energy Inc 2014 141 00013 Rev 05 Engage Cable Installation Step 4 Attach the Microinverters to the Racking 14 a Mount the microinverters according to the microinverter manual Ensure both that the A microinverter does not interfere with the PV module frames or stiffening brace and that the drop cable from the microinverter can easily reach the connector on the cable If required connect a GEC according to the microinverter manual See the following table Documentation is available at http www enphase com support Enphase Microinverters M215 60 2LL S22 523 or 924 require a GEC or other compliant grounding method M215 60 2LL S22 Yes M215 60 2LL S23 Yes M215 60 2LL S24 Yes M215 60 2LL S22 IG No M215 60 2LL S23 IG No M215 60 2LL S24 IG No M250 60 2LL S22 No M250 60 2LL S23 No M250 60 2LL S24 No The M215 60 2LL S22 IG 523 16 524 16 M250 60 2LL S22 523 S24 do not require GEC because the DC circuit within these models is isolated and insulated from ground Ground fault protection GFP is integrated into these microinverters As a result these models take less time to install than other micro
21. nnect tool or a 3 Phillips screwdriver Step 6 Terminate the Unused End of the Engage Cable Attaching the Terminator following installation the latching mechanism is destroyed and the terminator cap cannot be used again If the latching mechanism is defective the terminator must not be used The latching mechanism must not be circumvented or manipulated Adhere to the following requirements Use only the terminator assembly to seal the conductor end of the trunk If the latching mechanism is defective do not use the terminator Do not circumvent or manipulate the latching mechanism Use the terminator and no other method to seal the conductor end of the trunk Do not expose the terminator cap to directed pressurized liquid water jets etc Do not expose the terminator to continuous immersion Do not expose the terminator to continuous tension e g tension due to pulling or bending the cable near the terminator Do not install or use in potentially explosive environments Do not allow the terminator to come into contact with open flame Use the terminator cap assembly only when all parts are present and intact Fit the terminator cap using only the prescribed tools Make sure that all seals are seated correctly in the wire organizer When stripping off the cable sheath make sure that the conductors are not damaged If the conductors are damaged proper system function cannot be assured Note The terminator is
22. residential applications or 208 VAC three phase typical for commercial installations All drop connectors on the Engage Cable bear labels indicating the cable type NOTE Make sure you are using the correct cable type Installers must order Engage a Confirm that the cable matches the electrical utility service at the site per the following 208 VAC three phase Engage Cable at sites with three phase 208 VAC service 240 VAC Engage Cable at sites with 240 VAC single phase service b Plan the cable route so that the drop connectors on the Engage Cable align with each PV module Allow extra length for slack cable turns and any obstructions c Measure the path of the AC branch circuit and cut a length of Engage Cable to meet your needs d Lay the Engage Cable along the route it will travel positioning the connectors so that they align with the PV modules Allow extra length for slack cable turns and any obstructions microinverters in an AC branch circuit as listed in the Enphase Microinverter manual You r WARNING Plan the AC branches so that they do not exceed the maximum number of must protect each microinverter AC branch circuit with a 20 A maximum breaker connector and microinverter at the exact center of the PV module Instead position the drop C NOTE Many PV modules have a central stiffening brace In these cases do not position the connectors so that the connectors do conflict with the braces e PV modu
23. systems For a list of approved PV module racking types refer to the Racking Compatibility document at http www enphase com support Cabling Length Options Engage Cabling is available in shorter lengths with 30 40 connectors depending upon voltage type Longer lengths can be ordered and cut to suit per order Ordering options include count spacing P Approx weight em vem mun e em mun e uem eem reser quem ree mun uem eem rese RU pe quem eee Rum men 7 O Enphase Energy Inc 2014 141 00013 Rev 05 Engage Cable Installation Planning for Cable Lengths and Type The Cabling System is flexible enough to adapt to almost any solar design To determine the length and cable type that you need apply the following considerations Account for the number of Enphase Microinverters to be installed on the AC branch circuit Make sure to allocate the correct number of connectors including extra connectors for gaps and turns Plan for additional cable length to reach from the AC branch circuit junction box to the first microinverter If greater than half a connector interval is needed you may need to allow for one or more unused connectors in order to span this distance You must cover unused connectors with Enphase watertight sealing caps Minimize the number of unused Engage Cable connectors with three phase sys
24. tems When cable connectors are left unused on a three phase system it creates a phase imbalance on the branch circuit If multiple cable connectors are skipped over multiple branch circuits the imbalance can multiply You can sometimes avoid skipping Engage Cable connectors with the use of Engage Couplers Use the Engage Coupler to connect two Engage Cables or to connect Engage Cable to field cable There are many possible scenarios for each type of connection but they generally fall into four categories Engage Cable to Engage Cable 1 Make use of leftover lengths of Engage Cable 2 Transition between portrait and landscape Engage Cable Engage Cable to Field Cable 12 TC ER 3 Transition between sub arrays on the same circuit 4 Create wiring extensions for Engage Cable homerun wiring Enphase Energy recommends maintaining less than 296 voltage drop NOTE The Engage Coupler only supports 12 TC ER which may not be sufficient for across all wiring In situations where you cannot use an Engage Coupler you can use an electrical junction box to transition between cable types Account for additional lengths of cable when calculating total voltage rise Refer to the following documents to maintain AC voltage rise at less than 2 o Applications of the Engage Coupler o Circuit Calculations for the M250 Microinverter also available for M215 o Calculating AC Line Voltage Drop for M250 Microinverters with Engage Cables also
25. ternet according to the Envoy Quick Install Guide b Wait for the Web indication on the Envoy s LCD screen c Leave the Envoy running while you install the microinverters so that any required Envoy software upgrade completes automatic upgrade from Enphase Because this upgrade may take up to 20 minutes connect the Envoy first at the site connect to both AC power and the broadband router so that it performs the upgrade well before the solar module installation is complete Best Practice When powered up and connected for the first time the Envoy may retrieve an A Warning Do not remove power from the Envoy if the LCD displays Upgrading Do Not Unplug Y SS di AC power cord Ethernet cable to broadband router TM Menu button 1 emove serial Z number label and attach it to the installation map For wall mounting route AC power cord and Ethernet cable through cable channel 11 O Enphase Energy Inc 2014 141 00013 Rev 05 Engage Cable Installation Step 2 Install the AC Branch Circuit Junction Box 12 DANGER Risk of Electrical Shock Be aware that installation of this equipment includes risk of electric shock Do not install the AC junction box without first removing AC power from the Enphase System WARNING Only use electrical system components approved for wet locations WARNING Do NOT exceed the maximum number of microinverters in an AC branch circuit
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