Developing of a Residential Electrical Wiring System Project Assignment


To provide the knowledge and design skills to develop a residential electrical wiring system as per regulation standards.

Learning Outcome:

Selection and Design of cable sizes in compliance with IEE Wiring Regulations (AM8, AM9).

Summary of the task

Electrical house wiring regulations are necessary to decide the conductor size of cable for 220-240 V electrical supply under different weather conditions. First, it is necessary to understand the significance of power-flow study to fix the voltage-limits from the source to the load point. Then based on 17th wiring regulations/16th IEE wiring regulations/ National wiring regulations, design the ampere carrying capacity of wires used in a house. Further, recommend the safe and cost-effective earthing technique to avoid from electric shock.

You are instructed to read, understand the following points to complete the given Electrical

Wiring- Design task for the house:

1. Conduct a power-flow study distribution radial network having 04/05 nodes to understand

voltage variation from source to load by assuming load data and line data.

2. Collect the electrical load capacity for all appliances of a sample residential house.

3. Calculate the conductor design current (Ib), nominal current (In), perspective current (Iz),

short circuit current (Isc) and % voltage drop for 1-phase, AC supply voltage with following


– Standard insulated conductors for group of 2/3/4/5/6 and clip to a surface.

– Cable operating under 03 different ambient temperature conditions.

– Refer the Appendix (Page-2) to tabulate the results obtained.

4. Sketch and compare the different type of earthing systems used in Oman/Any other opted

country for studies and recommend cost effective suitable earthing system.

5. Calculate the earth fault loop impedance for home selected and justify its need.


– Abstract & Introduction with citation

– Data Selection, Design (Sample Hand Calculations) and implementation steps.

– Result Analysis, Conclusion and Recommendations

– Report structure in terms of logic and coherence with proper referencing

*** Word count: 1650 words

*** In-Text Citation and References using Harvard style

*** An attachment “Indicative References” has been uploaded for your information