SolarEdge SE3000H-US Installation Manual page 19

Installation Guidelines
If connecting more modules than optimizer inputs in parallel, use a branch cable. Some commercial
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power optimizer models h ave a dual input.
Position the power optimizer close enough to its module so that their cables can be connected.
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Make sure to use power optimizers that have the required output conductor length:
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Minimize the use of extensions between power optimizers.
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You can use extension cables between rows and from the end of string to the inverter.
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Do not use extension cables between the modules and the power optimizers, or between two
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power optimizers within a string.
The minimum and maximum string length guidelines are stated in the power optimizer datasheets.
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Refer to the D esigner for string length verification. The D esigner is available on the SolarEdge website
at http://www.solaredge.us/products/installer-tools/site-designer#/.
Completely shaded modules may cause their power optimizers to temporarily shut down. This will
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not affect the performance of the other power optimizers in the string, as long as the minimum
number of unshaded power optimizers connected in a string of modules is met. If under typical
conditions fewer than the minimum optimizers are connected to unshaded modules, add more
optimizers to the string.
Equipment grounding tightening torques: 4-6 AWG: 45 lb-in, 8 AWG: 4 0 lb-in, 10-14 AWG: 35 lb-in.
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T o allow for heat dissipation, maintain a 2.5 cm / 1" clearance distance between the power optimizer
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and other surfaces, on all sides except the mounting bracket side.
NOTE
The images contained herein are for illustrative purposes only and may vary depending on product
models.
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Single Phase Inverter with HD-Wave Technology Installation MAN-01-00306-1.1
Figure 4: Power optimizer clearance