Final answer:
The feeder size in volt-amperes for track lighting depends on the total wattage of the fixtures and is calculated using the wattage, voltage, and a safety factor; however, without specific wattage data, a precise answer cannot be given.
Step-by-step explanation:
The question regarding the feeder size in volt-amperes for track lighting installation in a dress shop relates to an electrical engineering topic, which is part of the broader Engineering discipline. Determining the feeder size involves calculating the total power consumption of the lighting system and then choosing the appropriate feeder to handle that load. In a practical application, one would sum up the wattage of all fixtures attached to the track and then calculate the volt-amperes (VA) by using the formula VA = Watts × (1.25 for continuous load), assuming a voltage supply (typically 120V in North America). This provides the required safety margin for continuous operation as required by the National Electrical Code (NEC). However, since no specific wattage per lighting fixture or total wattage is provided in the question, it is not possible to give a precise answer without this information. Generally, for any lighting system, including track lighting, it's important to ensure that the chosen feeder can handle the maximum potential load while adhering to electrical codes and safety regulations to prevent overload and potential hazards.