Podcast
Questions and Answers
What is the first step in creating a power design plan in AutoCAD?
What is the first step in creating a power design plan in AutoCAD?
Clean the architectural drawing and give it a grey color.
What should be done after cleaning the architectural drawing in AutoCAD for a power design plan?
What should be done after cleaning the architectural drawing in AutoCAD for a power design plan?
Convert it to a block.
What is the purpose of creating a new layer named 'ARCH' in AutoCAD for a power design plan?
What is the purpose of creating a new layer named 'ARCH' in AutoCAD for a power design plan?
What is the purpose of creating a 'Power system Legend' in AutoCAD for a power design plan?
What is the purpose of creating a 'Power system Legend' in AutoCAD for a power design plan?
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Why is zoning important in selecting electrical rooms according to the content?
Why is zoning important in selecting electrical rooms according to the content?
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Which factors should be considered when designing a power circuit?
Which factors should be considered when designing a power circuit?
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What are the classifications of socket types?
What are the classifications of socket types?
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What are the three types of loads in power design?
What are the three types of loads in power design?
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______ is used to disconnect electricity from a machine during maintenance.
______ is used to disconnect electricity from a machine during maintenance.
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Match the HVAC system component with its description:
Match the HVAC system component with its description:
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Study Notes
Power Design and MEP Systems
Power Design Plan
- To design a power circuit, four essential components must be selected: socket type and size, wire type and size, raceway type and size, and circuit breaker type and rating.
- Socket types are classified into several categories, including:
- General sockets or simplex sockets
- Italian/Egyptian/Euro/American standard
- With or without safety shutters
- With or without earthing (only in Italian standard)
- Single, double, or triple
- There are various types of electrical sockets, including:
- Single socket (2P, 2P+E)
- Double socket (2P, 2P+E)
- Power socket (used for heavy loads above 16A)
- Column socket (used for heavy loads above 16A)
- Floor box (used in areas with no walls or glass walls)
Socket Distribution and Installation
- Sockets distribution should be based on:
- Architectural plans and furniture distribution
- Lack of information about furniture (follow Egyptian code)
- Usage of the area
- There are three types of loads:
- Normal load
- Emergency load
- Critical load
- Egyptian code requirements for socket distribution:
- Maximum distance between sockets and walls
- Maximum distance between sockets and each other
Mechanical Loads
- Disconnect switch types and selection:
- Depends on the number of poles (single phase or three phase)
- Depends on the ampere rating (from 16A to 3600A)
- Depends on the protection type (fused or non-fused)
- Depends on IP protection
- Systems that require disconnecting switches:
- Sliding door
- Fire alarm control panel (FACP)
- HVAC loads
- Air curtains
- HVAC system components:
- Fans (exhaust, fresh air, jet, smoke exhausted, wall exhaust, central exhaust, and toilet ventilation)
- Outdoor units (compressor, chillers, AHU, and water pump)
- Chiller types (air cooled and water cooled)
- VRF and VRV systems
- Types of air condition systems:
- Split unit
- Central air conditioning
- Variable refrigerant flow (VRF) and variable refrigerant volume (VRV)
- Chilled water system components:
- Chiller
- AHU for large spaces
- FCU for small spaces
- Water pumps
- Cooling tower (for water-cooled systems)
- Fire fighting system components:
- Fire pump
- Primary pump
- Standby pump
- Jockey pump
- Plumbing system components:
- Heaters
- Central heater
- Normal heater
- Drainage system
Power Design and AutoCAD
- Steps to create a power system design plan:
- Clean the architectural drawing from unnecessary details
- Give the drawing a gray color and convert it to a block
- Open a new AutoCAD file and create a layer for the power system design
- Create a new layer for sockets and distribute them according to the code
- Create a power system legend specific to the project
- Create separate layers for normal, emergency, and critical wiring
- Label each line and circuit breaker
- Choose the electrical room (zoning) to avoid voltage drop
- Important steps to follow when designing a power system plan:
- Use a specific naming convention for lines and circuits
- Create a separate drawing for mechanical loads
- Identify all HVAC devices and heaters that require electrical feeding
- Place each disconnect switch on a separate line
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Description
This quiz covers the basics of power design, including socket types and sizes, wire types and sizes, and circuit breaker types and ratings. It is part of a lecture on power design and MEP systems.
