Typical Electrical Drawing Symbols and Conventions. - NRC. PBWB Phosphor bronze wire braid. PBCU or TCU Tinned copper. PELV An extra-low voltage system similar to SELV but connected to earth at some point. P & ID Piping and instrument diagram. PF or pf Power factor. Ph or ph Phases of an electrical circuit. pk or peak Peak value of an instantaneous quantity. PLC Programmable logic controller.
![[DIAGRAM] Electrical Wiring Diagram Abbreviations](https://www.chanish.org/wp-content/uploads/2019/06/wiring_diagram_wire_color_abbreviations_3.jpg "[DIAGRAM] Electrical Wiring Diagram Abbreviations")
![[DIAGRAM] Electrical Wiring Diagram Abbreviations](https://i.pinimg.com/736x/18/15/17/181517f2da1eed37719a1c7808c3dbdb.jpg "[DIAGRAM] Electrical Wiring Diagram Abbreviations")
![[DIAGRAM] Electrical Wiring Diagram Abbreviations](https://www.sec.gov/Archives/edgar/data/1377757/000121716010000120/esaasetechreport1003.jpg "[DIAGRAM] Electrical Wiring Diagram Abbreviations")
![[DIAGRAM] Electrical Wiring Diagram Abbreviations](https://www.hondatwins.net/forums/attachments/291022d1569172717t-wiring-diagram-abbreviations-wiringabbr.jpg "[DIAGRAM] Electrical Wiring Diagram Abbreviations")
![[DIAGRAM] Electrical Wiring Diagram Abbreviations](https://www.toyotaguru.us/engine-control-systems/images/1846_183_125-electrical-color-abbreviations.png "[DIAGRAM] Electrical Wiring Diagram Abbreviations")
![[DIAGRAM] Electrical Wiring Diagram Abbreviations](http://cdn.slidesharecdn.com/ss_thumbnails/fj2012abbreviation-120229144054-phpapp01-thumbnail-4.jpg?cb%5Cx3d1330526530 "[DIAGRAM] Electrical Wiring Diagram Abbreviations")
![[DIAGRAM] Electrical Wiring Diagram Abbreviations](https://ww2.justanswer.com/uploads/kiatech01/2010-07-03_234243_147813120.jpg "[DIAGRAM] Electrical Wiring Diagram Abbreviations")
The abbreviation symbols used in wiring diagrams are defined below. 1. Abbreviation symbols used for system name Abbreviation symbols Meaning Abbreviation symbols Meaning A/C Air conditioner EGR Exhaust gas recirculation ABS Anti-skid braking system ETACS Electronic time alarm control system. NewRexton_EWD_CEWD01007 - Free download as PDF File (.pdf), Text File (.txt) or read online for free. This document provides abbreviations commonly used in electrical wiring diagrams and their corresponding full words. It includes over 70 abbreviations across various systems ranging from airbags and air conditioning to engines, lights, and transmissions.