Have you previously done design for electrical work?
o Yes
o No
If yes, the following two items must be answer
a- What facilities or buildings you designed?
o Commercial
o Residential
o Industrial
o Medical/Health Care
o Educational/Schools
o Hotels
o Power Plant/S...
و اﻟﺴﻼم ﻋﻠﻴﻜﻢ و رﺣﻤﺔ اﷲ و ﺑﺮآﺎﺗﻪ.
اﺧﻮآﻢ /ﻣﺤﻤﻮد ﻋﺼﺎم ﺣﺰﻩ
, T op Ele c t ric a l De sign Prepared by: Mahmoud Essam Hizzah
Que st ions & Answ e rs Electrical Design Engineer
1) Have you previously done design for electrical work?
o Yes
o No
If yes, the following two items must be answer
a- What facilities or buildings you designed?
o Commercial
o Residential
o Industrial
o Medical/Health Care
o Educational/Schools
o Hotels
o Power Plant/Stations
o Sports
o Exterior Site Work
o Others: Please specify:
b- What Standards or Norm you used in your design?
o French
o American
o British
o IEC
o Others: Please specify:
2) Have you previously done shop drawing (execution) for electrical (high current) work?
o Yes
o No
3) Are you familiar and have used the following computer software’s:
o MS Word
o MS Excel
o AutoCAD
o Lighting Calculation Programs: Please specify:
o Voltage Drop Calculation Programs: Please specify:
o Short Circuit Calculation Programs: Please specify:
o Others: Please specify:
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st
1 Edition Best Wishes
, T op Ele c t ric a l De sign Prepared by: Mahmoud Essam Hizzah
Que st ions & Answ e rs Electrical Design Engineer
4) What are the de-rating factors considered in cable installation?
Answer:
- Ground Temperature de-rating factor
- Air Temperature de-rating factor
- Burial Depth de-rating factor
- Soil Thermal Resistivity de-rating factor
- PVC Rated Temperature de-rating factor
- Trefoil or Flat Formation de-rating factor for three & single core cables laid direct in ground
- Trefoil Formation de-rating factors for multi-core cables laid direct in ground
- Reduction factors for groups of more than one multi-core cable in air to be applied to the current
carrying capacity for one multi-core cable in free air
- Reduction factors for groups of more than one circuit of single core cables to be applied to the current
carrying capacity for one circuit of single core cables in free air
5) What are the types of contracts? State the difference between them?
Answer:
- Lump Sum
- Re-measured
- Cost Plus
6) What are the precautions to be taken in mind when selecting an emergency feeder running next to another
feeder fed from normal supply?
Answer:
- Type of the used designed cable should be taken into consideration regarding its properties & to be of
higher fire resistance.
7) What is the national color code of a three phase circuit?
Answer:
- Red for phase (A)
- Yellow for phase (B)
- Blue for phase (C)
- Black for neutral (N)
- Yellow with green strip for protective earth (PE)
-2-
st
1 Edition Best Wishes
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