document.getElementById('energy_cost').value = round_up(document.getElementById('energy_user').value * cost); document.getElementById('hour').focus(); } AC three phase amps to kilowatts calculation Calculation with line to line voltage nStr += ''; document.getElementById('energy_user').value = addCommas(document.getElementById('energy_user').value); So, the service provider measured motor current to identify percent of load, which could indicate if additional air compressors are needed.The service provider calculated the full-load current for each unit to be // -->