This type of wire is required to meet the 2008 NEC if you are using a transformerless inverter.
15' MC4 Solarline 2 PV-Wire Output Cable, 44.0015
These cables have the newer, snap-together Multi-Contact hard plastic connectors on each end and are made with PV-Wire that has an extra layer of insulation for use on ungrounded arrays in conjunction with transformerless inverters.
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