Installation manual

Safety, Installation, and Operations Manual

Power Unlocked by Design

The microinverter housing is designed for outdoor installation and complies with the NEMA 250, type 6

environmental enclosure rating standard:

NEMA 6 rating denition: Indoor or outdoor use primarily to provide a degree of protection against hose-

directed water, the entry of water during occasional temporary submersion at a limited depth, and damage

from external ice formation.

The Enphase Q Cable is available with connector spacing options to accommodate installation of PV modules in

portrait or landscape orientation. For Enphase Q Cable ordering information, see “Enphase Q Cable Planning and

Ordering” on page 37.

Planning the Racking

Plan the racking position with the Microinverter in mind. Ensure that the racking does not interfere with the

microinverter and its connectors.

Grounding Considerations

The Enphase Microinverter models listed in this guide do not require grounding electrode conductors (GEC),

equipment grounding conductors (EGC), or grounded conductor (neutral). Your Authority Having Jurisdiction

(AHJ) may require you to bond the mounting bracket to the racking. If so, use UL2703 hardware or star washers.

Refer Module Installation: Step 10 for details. The microinverter itself has a Class II double-insulated rating, which

includes ground fault protection (GFP).

Branch Circuit Capacity

Plan your AC branch circuits to meet the following limits for maximum

number of microinverters per branch when protected with a 20 amp

(maximum) over current protection device (OCPD).

NOTE: * Limits may vary. Refer to local requirements to dene

the number of microinverters per branch in your area.

Utility Service Requirements

The Enphase IQ Microinverter for ACM work with single-phase service.

Measure AC line voltages at the electrical utility connection to conrm

that it is within the ranges shown:

Planning for PowerXT

-R-AC Module Installation

MAXIMUM* IQ 7+ MICROS

PER AC BRANCH CIRCUIT (240 VAC)

MAXIMUM* IQ 7+ MICROS

PER AC BRANCH CIRCUIT (208 VAC)

240 VOLT AC, SINGLE PHASE

L1 to L2 211 to 264 VAC

L1, L2 to ground 106 to 132 VAC

208 VOLT AC, SINGLE PHASE

L1 to L2 183 to 229 VAC

L1, L2 to ground 106 to 132 VAC