Independent Electrical Contractors of Chesapeake (IEC Chesapeake) and the Western Electrical Contractors Association, Inc. (WECA) are working in cooperation with Delmar Cengage Learning, to create an ELECTRICAL PRE-APPRENTICESHIP & WORKFORCE DEVELOPMENT MANUAL. IEC Chesapeake is a chapter of the Independent Electrical Contractors (IEC), and WECA is a California based merit shop electrical contractors association.