Enphase M215 Service Manual download pdf (Page 33)

M215 Installation and Operation

Voltage Type and Conductor Count Options

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, 240VAC

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 on page 23.

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:

Model Number

Voltage type/

conductor #

Connector

count

Connector

spacing

PV module

orientation

Approx. weight

ET10-240-40

240 VAC,

4 conductor

1.025 m (40”)

Portrait

18.1 kg

(40 lbs)

ET17-240-40

240 VAC,

4 conductor

1.7 m (67”)

Landscape

20.4 kg

(45 lbs)

ET10-208-30

208 VAC,

5 conductor

1.025 m (40”)

Portrait

13.6 kg

(30 lbs)

ET17-208-30

208 VAC, 5

conductor

1.7 m (67”)

Landscape

15.9 kg

(35 lbs)

ET10-240-BULK

240 VAC,

4 conductor

240

1.025 m (40”)

Portrait

over 90 kg

(200 lbs)

ET17-240-BULK

240 VAC,

4 conductor

240

1.7 m (67”)

Landscape

over 90 kg

(200 lbs)

ET10-208-BULK

208 VAC,

5 conductor

240

1.025 m (40”)

Portrait

over 90 kg

(200 lbs)

ET17-208-BULK

208 VAC,

5 conductor

240

1.7 m (67”)

Landscape

over 90 kg

(200 lbs)

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 systems. 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.

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Enphase M215 Service Manual Page 33

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