There are several crucial stages in the process of installing outdoor electrical cables which include mapping out wires, picking matching cable types, and meeting the local electrical codes standards. Assess the potential installation site before determining the cable length needed and any bends along the way. Look for UV protected jackets and moisture barrier rated cables for outdoor usage. Cables should properly be buried at the recommended industry depth and use conduits when physically the cables could get damaged. As with anything involving electrical work, contact a licensed electrician for any uncertainties regarding the installation.