What is the phase to phase value of a 7200 volt 3-phase 3-wire system?

In a 7200 volt three-phase, three-wire system, the phase-to-phase voltage is essentially the system's nominal line voltage. In a three-phase system, the voltage between any two phases is referred to as the line voltage, which in this case is specified as 7200 volts.

In a typical three-phase system, the relationship between phase voltage and line voltage is significant; however, in a three-wire system, the line voltage is expressed directly as the voltage observed between any two of the three phases. Therefore, the phase-to-phase value remains at 7200 volts, meaning this is the voltage measured across the phases.

In contrast, the phase voltage, which is the voltage measured from any one phase to the neutral (in a four-wire system), would be calculated differently and is not relevant in this case since we are focused on the line voltage in a three-wire setup. The other values provided would generally represent different configurations or types of systems, making them unsuitable for this particular question.