Philippine Electrical Code 2017 Part 1/Appendix D. Wiring Design Examples

Appendix D. Wiring Design Examples

DISCLAIMER

This is not an official copy of the Philippine Electrical Code. This is a Design Guide according to the provisions of the Philippine Electrical Code. It also provides interpretation and annotations of the clauses of the Philippine Electrical Code. Any information, interpretation and/or annotation presented herein are based on personal opinion of the authors and does not represent the official interpretation of the Philippine Electrical Code.

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Note: This is a work in progress...

Introduction

(A) General

This part contains wiring design examples to illustrate the application of some of the provisions of this Code. The examples illustrated herein, although not exhaustive, cover several scenarios which are typically encountered by the practitioners. the examples illustrate how to determine the size of branch circuits, feeders and services. Typical Single-Family and Multi-Family Dwelling units of different demand load are presented considering the single-phase and three-phase systems. Single and multiple motor examples illustrate how to size the branch circuit conductors and overload protection. Several overload protection schemes are presented. examples on system with fire pump to illustrate its special requirement and a system with voltage regulator are also included.

(B) Branch Circuit Required.

For small single-family dwelling unit having a floor area of not more than 50 square meter with load not exceeding 3,680 volt-amperes, the Code permits the use of one circuit as illustrated in Example D1 [See 2.10.1.11(D)]. For minimum number of branch circuits required, see Section 2.10.1.11(A) to (D).