Wells MDW dry well units are constructed in the U.S.A. with a corrosion-resistant type 430 stainless steel body. The units include factory-attached infinite controls for each individual well. The one  and two  well models are single  phase, but can be converted to three  phase. The three , four , and five  well models are three  phase and can be field converted to single  phase. All units come setup to hard-wire. The standard units use 0.61 kW per well at 208 V and 0.8 kW per well at 240 V. The units are insulated on front, back, sides, and bottom. Units are designed to be top-mounted.