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Explain, with reasons, why the following information,relating to the characteristics of the supply, is required during the design stage of the electrical installation.
Prospecting is the only known way to locate Earth Fault Current.A). Prospective Earth Fault Current. (l)
The value is directly related to the demand for said impedance based upon external stimuli.B). The Value of External Impedance. (Ze)
Typically, the installation will utilize all of the available current based solely upon assumptions of course.C). New Assumed current demand of the installation.
The external bulkhead luminaires that I have encountered usually have a disconnection time in the range of .014 to .018 nano seconds.D). Disconnection time of the external bulkhead type luminaire.