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Enphase Energy, Inc.
PV Micro-inverter
22.
The Micro-inverter shall be installed according to the provisions of this approval and the
manufacture installation instructions. When the manufacturer installation instructions conflict with
this approval letter, the conditions specified in this approval letter shall prevail.
23.
The installation of this Micro-inverter is not approved for Hazardous (Classified) locations as
defined in Los Angeles Electrical Code.
24.
Except as permitted under this research report, the installed Micro-inverters and the Engage cables,
when replaced, shall be of the identical original manufacturer's part that was approved by the Los
Angeles City Electrical Testing Laboratory.
25.
Only Micro-inverter M215 series may be replaced by M215-IG series.
26.
If a Micro-inverter is no longer in service, it shall be disconnected and removed in accordance with
the manufacturer's installation instructions.
27.
An electrical permit shall be obtained prior to installation or relocation of a photovoltaic system in
the City of Los Angeles.
DISCUSSION:
The product covered under this Research Report is an AC grounded single phase, 208 or 240 volts, utility-
interactive, Enphase Micro-inverter. For Models M215-IG and M250-60 the maximum DC input Voltage
shall not exceed 48VDC and for model M250-72, the maximum DC input voltage shall not exceed 62VDC.
The Positive and Negative input DC conductors of the inverter are not grounded, and they are electrically
isolated from AC output conductors. The inverters operate as an ungrounded DC power source. The Micro-
inverter's enclosure is bonded to the equipment grounding conductor of the engage cable. The inverter's
output AC neutral conductor is not bonded to its metal enclosure.
This Micro-inverter is intended to connect to a single PV module using individual single pin connectors. It
can be installed in a single phase or three phase configuration when the appropriate cable harness is used.
The inverter metal inclosure is connected to the AC ground through the approved cable connector and the
equipment grounding conductor within the AC cable.
These Micro-inverters consist of an aluminum metal enclosure, built-in ground fault protection in accordance
with Los Angeles Electrical Code (Sec 690.35), positive and negative DC cables and connectors, an AC
cable and connector.
The Engage cable consists of four (or five) #12AWG conductors that are 2 (or 3) line conductors, a neutral
conductor, an equipment ground conductor, and a male connector. The cable connectors are polarized
nonstandard configuration, locking type with a grounding member, where all live parts are guarded against
inadvertent contact by a person. The connectors are rated for interrupting full load current without hazard to
the operator and are listed or identified for its use. The grounding member of the connector contact is
designed to be the first to make and the last to break contact with the mating connector.
The PV modules, racking system, and associated hardware are not part of this approval. The efficiency and
operation of the Micro-inverter were evaluated by CSA under Certificate number 2395707 and UL Listing
number Q1KH.E341165.
RR 930509
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