Xref overrides autocad 2020List of pre-qualified electrical contractors. The following list of pre-qualified Electrical Contractors is available for customers wishing to utilize their services for construction of ESCOM network required to provide electricity connection to their premises or installations.Pixel 6 fingerprint sensorLearn the definition of 'prequalification of contractors'. Check out the pronunciation, synonyms and grammar. The most danger exists in the use of informal lists operating in a disguised manner for prequalification or pre-selection of potential suppliers or contractors.