ECE464 Power Electronics Engineering Proof Reading Services

ECE464 Power Electronics Engineering Proof Reading Services

Shops 1-5 max cable runs for final sub-circuits

1. Max demand is required for each shop separately. Show all workings
2. Max demand is required for all shops combined
3. Consumer mains are to be buried enclosed in ground. Sub mains are to be run in roof space, enclosed on cable tray. You are to calculate size and volt drops of all circuits (ref AS/NZS 3000-AS/NZS 3008.1.1. Calculate all earth conductor sizes and check for and apply if applicable any de-rating factors
4. Main switchboard multiple master meter enclosure:

A. Design and detail using AZ/NZS 3000 and WA Electrical Requirements

B. Draw a single line diagram, protection devices, A/links (if any), N links, earth link, n-link, main earth, earth bonds and all conductor sizes.

Solution

The circuit connection requires that the neutral connection and the conductors are continuous and connected by splicing and bonding conductor. Connect the ends using the soldering method or with connector and tapping. There are other research methods used in electrical circuit connection such as T joints with a metal enclosure. There are 5 shop units which are supplied with underground power and they have multiple masters metered. The circuit loading, the numbers of final sub-circuits and many other specifications have been left out deliberately. The table below analyzes the components of the electrical design of the shops.

1. Max demand is required for each shop separately. Show all workings
2. Max demand is required for all shops combined
3. Consumer mains are to be buried enclosed in ground. Sub mains are to be run in roof space, enclosed on cable tray. You are to calculate size and volt drops of all circuits (ref AS/NZS 3000-AS/NZS 3008.1.1. Calculate all earth conductor sizes and check for and apply if applicable any de-rating factors
4. Main switchboard multiple master meter enclosure:

A. Design and detail using AZ/NZS 3000 and WA Electrical Requirements

B. Draw a single line diagram, protection devices, A/links (if any), N links, earth link, n-link, main earth, earth bonds and all conductor sizes.

Solution

The circuit connection requires that the neutral connection and the conductors are continuous and connected by splicing and bonding conductor. Connect the ends using the soldering method or with connector and tapping. There are other methods used in electrical circuit connection such as T joints with a metal enclosure. There are 5 shop units which are supplied with underground power and they have multiple masters metered. The circuit loading, the numbers of final sub-circuits and many other specifications have been left out deliberately. The table below analyzes the components of the electrical design of the shops

Part 1: Sub-main Cables

Part 2&3: Mains Cable & Cable Selection

Part 4: Earth sizes- Fault current Performance

Part 5: Main switchboard, multiple master meter enclosure and unit sub-boards

In a nutshell, the AS3000/ANZ standards are adopted in Australia and New Zealand to regulate the building and electrical wiring for different types of buildings. The standards are given load codes which govern the length and diameter of cables used especially in earthing and underground cabling. The standards, specify, further the kind of insulation that is appropriate for the cables used to ensure losses are minimized.

References

1. AS3000/NZ1 (2007) Wiring Rules and Standards: Electrical Installations (known as the Australian/New Zealand Wiring Rules). Standards, Australia.