The main consideration in designing feeders is

• A. Transmission Voltage
• B. Voltage Drop
• C. Resistance
• D. Current carrying capacity

Answer: (D)

DESIGN CONSIDERATIONS IN A DISTRIBUTION SYSTEM
Good voltage regulation is the most important factor in a distribution system for delivering good service to the consumer. For this purpose, careful consideration is required for the design of feeders and distributor networks.
Feeders:- Feeder are the conductors that connect substations to consumer ports and have the large current-carrying capacity. The current loading of a feeder is uniform along the whole of its length since no lappings are taken from it. The design of a feeder is based mainly on the current that is to be carried.
Distributors:- Distributors are the conductors, which run along a street or an area to supply power to consumers. These can be easily recognized by the number of tappings, which are taken from them for the supply to various consumer terminals. The current loading of a distributor is not uniform and it varies along the length while its design is largely influenced by the voltage drop along with it.
Service Main and Sub Main:- Thc service mains are the conductors forming connecting links between distributors and metering points of the consumer’s terminal The term sub main refers to the several connections given to consumers from one service main. The area of the cross-section of a sub-main conductor is greater than that of the service mains.