Form 231 – Fill Out and Use This PDF

Verifier

Energy Trust

Verification Date(s)

Time of Measurement

Trade Ally*

1st:

2nd:

Customer

Trade Ally Contractor

PowerClerk #

Site Address

City

Zip

Ambient Temperature (°F)

Solar Radiation (W/m2)

Inverter Output (watts AC)

Initial Meter Reading

Notes:

Verification

1st 2nd

2.1

General

2.1.1

System installed on real property in Oregon and grid-tied to

PGE or

Pacific Power.

2.1.2

System meets local utility interconnection and net metering requirements, if applicable.

2.1.3

Installation is of industry standard and workmanlike quality.

2.1.4

System is designed to optimize annual performance, without sacrificing good aesthetics.

2.1.5

Installation is consistent with schematic diagram and documentation.

2.1.6

Installation is consistent with physical layout diagram.

2.1.7

System complies with all applicable codes

and jurisdictional inspection(s) have been passed. Permit #

Date

2.2

Materials

2.2.1

Materials used outdoors are UV-resistant and listed for outdoor locations.

2.2.2

Materials are designed to withstand the temperatures to which they are exposed.

2.2.3

Dissimilar metals that have galvanic action are isolated.

2.2.4

Aluminum is not placed in direct contact with concrete.

2.2.5

Stainless steel fasteners are used on modules and racking. High quality fasteners are used elsewhere.

2.2.6

Structural members are made of approved materials.

2.2.7

Rails used for mounting modules are aluminum or stainless steel (residential, roof mounted only)

2.3

Equipment and Installation

Form 231 v04 120824

Page 1 of 2

2.3.12 Conduit used for DC conductors is EMT. Heavy-weight flexible steel or hospital grade MC may be used per OESC.

2.3.13 Grounding conductors (EGC and GEC) are copper and 6 AWG or sized according to Code.

2.3.14 Twist-on wire connectors are not used on DC conductors or ground wires.

2.3.15

Junction boxes and combiner boxes are listed and suitable for their environment and conditions of use. Boxes used in

damp or wet locations are appropriately waterproofed.

2.3.16 Permanent engraved, stamped or printed labels are applied to system components as required by Code.

2.3.17 Disconnect switch cover plates (not switch handles) are secured closed for safety.

2.3.18 Inverter is installed in an appropriate location, shaded by a permanent structure if necessary, meets all mfg. specs.

2.4.1 If roof-mounted, the roofing material has at least 10 years of useful life remaining.

2.4.2 If roof-mounted, the roof system is capable of handling additional load of the System.

2.4.3 Array racking and mounting systems engineered and installed to meet wind, snow and seismic load requirements.

2.4.4

All roof penetrations made watertight using roofing industry-standard methods of flashing.

2.4.5

All mounting hardware is installed according to manufacturer specifications.

2.5.1

Solar resource is documented with an Energy Trust approved tool from location where shading is most significant.

2.5.2

Total Solar Resource Fraction (TSRF) is 75% or greater at all points on the array(s).

2.6.1

Array sized to operate within the inverter current, voltage and power limits at the record high and low temperatures.

System size does not exceed 125% of inverter output power rating.

2.6.2

Wires sized to keep voltage drop at or below 2% in the DC conductors from the array to the inverter.

2.6.3

Wires sized to keep voltage drop at or below 2% in the AC conductors from the inverter to point of tie-in with the main

distribution or a pre-existing sub-panel.

2.6.4 AC voltage at the inverter is within the operating limits specified by the inverter manufacturer.

2.6.5

Voltage mismatch is minimized, allowing the inverter to operate within its maximum power point window. All modules

in a string are installed at the same tilt and orientation.

2.7.1 A qualifying production meter is installed on the AC output of the System.

2.7.2 If multiple-inverter system, output combined before meter or one electric meter installed for each inverter.

2.7.3

UV-resistant label identifying meter as the Solar Generator Output.

2.7.4

Meter reading consistent with setting of 000000 or 999999 at time of shipment to the installer.

3.0

Customer Manual

Complete and accurate System Overview page

Inverter owner’s manual*

Electrical as-built diagram

Manufacturer data sheets for modules and inverter(s)*

Contractor 2-yr parts & labor warranty*

* not applicable to third-party owned systems

Form 231 v04 120824

Page 2 of 2