Final answer:
Power limited tray cable should be appropriately rated for both voltage and current, using the American Wire Gauge (AWG) standard. For most applications, a 300V, 18AWG cable offers a good balance between current-carrying capacity and manageability, providing enough voltage capacity for efficient operation without excessive voltage drop.
Step-by-step explanation:
The question pertains to the voltage and current rating for power limited tray cable (PLTC). It is essential to choose the correct voltage and gauge (AWG) for the wire to ensure safety and compliance with electrical standards. In the context of wire gauge, American Wire Gauge (AWG) is a standardized system used in the United States to denote the diameter and current-carrying capacity of wires. The higher the gauge number, the smaller the wire diameter, and typically, the less current it can safely carry.
Household wiring usually falls between 10-gauge and 14-gauge, where 14-gauge wire has a smaller diameter than 10-gauge. Consequently, electrical appliances are rated based on the amperes they require to operate effectively. For power limited tray cables, the proper voltage rating is necessary to match the appliances and systems they will power, as they must be able to handle the voltage without excess voltage drop, which could impair performance.
Given the options provided, 300V, 18AWG would typically be a suitable choice for PTLC, as it offers a higher voltage rating and a gauge size that supports a decent current without being too large in diameter.