TECHNIQUES FOR WIRE ROUTING IN MICRO-INVERTER INSTALLATIONS |
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With the advent of the micro-inverter, roof-top wiring has become more complicated. Most installers will use plastic cable ties to bundle the AC and DC leads to the rail. The ties will fail in a few years, allowing all of that wiring to drape onto abrasive roof surfaces. We will not use plastic ties on a roof. Here is one technique we have developed specifically for micro-inverter systems. |
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Above is the discontinued bracket. Anyone have surplus? |
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The photo at right shows the usefulness of the bracket. You can mount it offset and use the back hub of your box. |
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The rail is prepared with the micro-inverters, conduit and ground wire installed. The AC leads have all been connected together. |
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The PV leads are prepared by taping a loop into them. Once in place the loops are allowed to expand to a more gradual radius. |
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The #4 bare ground has been pre-bent to lie in the correct position ready to lay into the approved lugs. |
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Ground wire secured in the lugs. Wire loops extend beyond the conduits |
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View under one module. |
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View under a row of modules. |
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The J-box. The AC pig-tail is spliced in here along with an "irreversible" ground splice. |
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Finished product. They all look like this from the top, but our installation is clean, safe and reliable under the hood, where it counts. |
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