WYAB gives accreditation to deal with evaluation bodies (FEB) considering essentials in the WYAB Approval Rules for Field Appraisal of Unlisted Electrical Equipment , ISO/IEC 17020 and NFPA Rules. WYAB guarantee FEBs can evaluate unlisted electrical stuff in the field. The WYAB Approval helps the Authority Having Area (AHJ) to evaluate and uphold unlisted electrical equipment in the field.