Westinghouse AC System, Руководство по установке

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Westinghouse Solar AC Installation Guide
Copyright © 2011 - Westinghouse Solar 31 | P a g e
electrical service. The unused bulkhead connector at the other end of the circuit is sealed with
the End Cap. If your array consists of multiple rows, additional wiring components may be
necessary. If continuing a branch circuit into an upper row, the AC interconnection cable is left
out until the end of the branch circuit.
Westinghouse Solar AC Panel to Junction Box wiring – On the end of a row of panels, attach a
grounding lug to the frame at one of the designated grounding attachment points of one panel
using the thread forming grounding screw. Then, connect the grounding lug to the appropriately
sized grounding conductor inside the Westinghouse Solar Junction Box.
8. Commissioning Westinghouse Solar AC Systems
Step 1 - Install the AC Branch Circuit Junction Box
Use electrical system components approved for wet locations only. Connect the open wire end
of the AC Interconnection Cable into the junction box using an appropriate gland or strain relief
fitting.
Do not connect the connector end to the Westinghouse Solar AC panels at this time, as
this is to be done during the commissioning step.
Step 2 – Verify the connections of the Inverter Wiring Harnesses
Each inverter comes with one 4-pin bulkhead receptacle and one 70-inch AC wire harness with
multi-pin connectors. The AC connectors are oppositely sexed, so that multiple inverters can be
connected to form one continuous AC branch circuit. Please verify that you performed this
properly in Section I, Step 6.
• Connect the first Micro-inverter to the AC interconnection cable (pigtail). All AC
interconnection cables have four conductors. Do not exceed the maximum number of
Micro-inverters in an AC branch circuit, as displayed on the unit-rating label. Each Micro-
inverter AC branch circuit must be sourced from a dedicated branch circuit protected by a
15A maximum breaker.
•
Install a protective end cap on the open AC connector of the last Micro-inverter in the AC
branch circuit. Make sure protective end caps have been installed on all unused AC
connectors. Unused AC Micro-inverter wire harness connectors may be live when the
system is energized by the utility system.
NOTE : Be sure to size the AC wire gauge to account for voltage drop between the AC branch
circuit junction box and the point of utility inter-connection. (See the wire sizing guide in the
appendix of this document).
Step 3 – Complete the Inverter Installation Map
The Inverter Installation Map is a diagrammatic representation of the physical location of each
inverter in your Westinghouse Solar AC installation. If you have purchased an EMU, follow the
included Monitoring Quickstart Guide to complete the Inverter Installation Map.