Answer the following statement(s) true (T) or false (F)

1. A nonconductive optical fiber cable for general-purpose use is marked as Type OFC.
2. The width of the cable tray is equal to the difference between the diameters of the cables.
3. Cable trays containing conductors that operate at over 600 volts are to be clearly marked at regular intervals to indicate that the contents are high-voltage cables. The specific marking is to state “Danger – High Voltage – Keep Away”
4. A single solid aluminum conductor not smaller than 250 kcmil is permitted in the cable, or the conductor is permitted to be formed using up to nineteen 250-kcmil solid aluminum rods laid parallel.
5. A welder is not to be considered as a separately derived premises system.


1. FALSE
2. FALSE
3. TRUE
4. TRUE
5. TRUE

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