The Inground Transformer is a buriable unit designed to provide 12 volt power for low voltage luminaires in landscape lighting installations. This transformer is recommended for situations where a Wall Mount unit is either not practical or desirable. Inground Transformers are available in either 120v 60Hz or 240v 50Hz and in six wattages: 20, 40, 50, 100, 150, and 200 watt (each transformer has an IG designation).