Self installed on the exterior of a single bay detached garage (shed!). Already had power but the existing wiring would only handle a 30 amp circuit, so I went with this unit which uses 24 amps and a 30 amp breaker. Very happy with the install and the charge times on this unit.
http://s5.postimg.org/rapkvhqpj/IMG_2405.jpg
Charlie
2015 Nissan LEAF S Gunmetal quickcharge
http://s5.postimg.org/rapkvhqpj/IMG_2405.jpg
Charlie
2015 Nissan LEAF S Gunmetal quickcharge