Panel Schedule

7. PANEL SCHEDULE

WHAT IS PANEL SCHEDULE?

Panel schedule is a data arrangement captured from the detailed lighting layout

PANEL SCHEDULE STEPS :

1. Determine the type of the panel (indoor lighting, outdoor lighting, power )
2. Get the number of circuits determined in the previous section
3. Provide 10% spare of the used circuits
4. Provide 10% space of the used circuits
5. Determine the nature of the feeding supply during the emergency cases (for lighting panel)
If Diesel Generator :  use separate emergency bus bars
if Back up Batteries : use pilot wire
6. Arrange your data the schedule keeping balancing between phases in your mind

PANEL SCHEDULE STEPS, Cont. :

7. Size the dry type transformer based on the calculated total power
8. Size both the primary side & secondary side cable based on the transformer rating
9. Size the main breaker based on the transformer rating
10. Fill any other missing data in the drawing

Dry Type Transformer sizing :

1. Get the transformer connected load from panel schedule in (kVA)
2. Determine the demand factor ( = 100% )
3. Determine the demand load in (KVA)
Demand load = Tr. Connected load / Demand factor
4. Determine the percentage of spare capacity (= 20%)
5. Determine the spare capacity in (KVA)
Spare capacity = 20% * Demand load (KVA)
6. Determine the transformer load factor (= 0.8)

Dry Type Transformer sizing, Cont. :

7. Determine the min transformer capacity (KVA)
Min Tr. Capacity =( Demand load + spare capacity ) /  Tr. Load factor

8. Determine the nearest upper standard transformer rating (KVA)

Standard Rating of Dry Type Transformer :

Indoor Lighting Panel schedule

Outdoor Lighting Panel schedule

Schematic Diagram of the Photo Cell

Power Panel schedule

Single Line Diagram Of Distribution Panel

 

Different Types of Distribution panels :

Outdoor Panels

Indoor Panels

 

 

Different Types of Dry Type Transformers :

 

  

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Ahmad Mohammad

Hi. I’m Designer of Mawsoo3a Blog. I’m Electrical Engineer And Blogger Specializing In Electrical Engineering Topics. I’m Creative.I’m Working Now As Maintenance Head Section In An Industrial Company.

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