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Feeder is designed from the point of view of
Current carrying capacity
Voltage drop
Operating voltage
Operating frequency
Current carrying capacity
A feeder is a conductor that connects the generating station or substation to the distribution area. Since a feeder's primary function is to transport bulk power without tapping intermediate loads, its design is governed primarily by the current-carrying capacity to ensure it can handle the maximum expected load current without overheating.
A feeder is a conductor that connects the generating station or substation to the distribution area. Since a feeder's primary function is to transport bulk power without tapping intermediate loads, its design is governed primarily by the current-carrying capacity to ensure it can handle the maximum expected load current without overheating.
IratedтАЛтЙдIthermalтАЛ тАФ The feeder must ensure the rated current does not exceed the thermal capacity limit of the conductor material and insulation.
The feeder must be capable of carrying the rated current continuously without exceeding the permissible temperature limit of the insulation. Unlike distributors, which are designed based on voltage drop (as they have intermediate tappings), feeders are designed primarily for current capacity because the voltage drop along a feeder is usually managed by substation-side regulation.
Feeders are designed to transmit bulk power with no intermediate tappings.
The primary constraint for feeder sizing is the maximum current it must carry.
Voltage drop becomes the primary design criterion only for 'Distributors', where load taps are present along the length.
Thermal limit is determined by the conductor's cross-sectional area and the ambient conditions.
Optimal material usage for bulk power transmission
Minimized power losses by avoiding intermediate distribution complexity
Cannot be used for direct consumer supply due to lack of tappings
Requires separate distribution network downstream
Interconnecting substations
Power transmission from generation plants to grid substations
| Feature | Feeder | Distributor |
|---|---|---|
Primary Design Factor | Current carrying capacity | Voltage drop |
Voltage drop is the limiting factor in the design of distributors, whereas current capacity is the limiting factor for feeders.
Option B (Voltage drop) is the correct design criterion for distributors, not feeders.
A is correct тАФ A feeder is designed essentially from the point of view of its current carrying capacity to ensure safe operation without overheating.
Always remember the simple mnemonic: Feeders carry bulk power (Current-Capacity limited), Distributors serve multiple customers (Voltage-Drop limited).