01. Difference between Pre Galvanized and Hot Dip Galvanized Cable Tray 02. How to do Cable tray sizing? 03. How to do Cable sizing? 04. Explain the scheme of ELV system in detail. 05. How to do Transformer or Panel switchgear sizing? 06. How do we calculate Short circuit current rating of Transformer or at any Point in the system? 07. What are the documents involved in Tender documents? Explain in detail 08. What are documents involved in vendor's RA bill certification at site?

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Answers to various technical questions related to procurement engineering

Pre Galvanized cable trays are coated with a layer of zinc before fabrication, while Hot Dip Galvanized cable trays are immersed in molten zinc after fabrication
Cable tray sizing involves determining the dimensions and load capacity based on the number and type of cables to be installed
Cable sizing is done by calculating the current carrying capacity and voltage drop for the cables based on the load requirements
ELV system scheme includes components like structured cabling, data networking, CCTV, access control, and public address systems
Transformer or panel switchgear sizing is determined based on the load requirements, fault level, and future expansion plans
Short circuit current rating of a transformer or system point is calculated using the transformer impedance, system impedance, and fault current levels
Tender documents include specifications, drawings, bill of quantities, terms and conditions, and any other relevant information for bidders
Vendor's RA bill certification documents at site include invoices, delivery notes, inspection reports, quality certificates, and any other required documentation