Our previous experience has included up to 25,000 sq ft, Large buildings including height of 16th floor. Service: Amps: From 100Amps to 1,200Amps; Single or 3-phase. Volts: 120V, 240V, 277V: Single Phase. 208V, 240V, 240V Hot Lag, 480V, 480 Hot Lag: 3-Phase. Project types have included: Offices (including Doctor's offices) Restaurants Banks Residential homes (some homes with value over $1,000,000.00) Mobile homes Gate operators Parking and street lights Churches Many service call jobs - all types.