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4- A final circuit is installed using single core, PVC insulated, copper cables in steel conduit. The steel conduit is used as the CPC. When an earth fault loop impedance test is carried out the result exceeds the maximum acceptable value of Zs. Describe a) Three possible faults that may cause...

4- A final circuit is installed using single core, PVC insulated, copper cables in steel conduit. The steel conduit is used as the CPC. When an earth fault loop impedance test is carried out the result exceeds the maximum acceptable value of Zs. Describe a) Three possible faults that may cause...

4- A final circuit is installed using single core, PVC insulated, copper cables in steel conduit. The steel conduit is used as the CPC. When an earth fault loop impedance test is carried out the result exceeds the maximum acceptable value of Zs. Describe a) Three possible faults that may cause...

thanks alot guys, i need someone to answer these questions without regulation numbers and codes please. 1-a) Explain the terms "on load" and "off load" with reference to isolating devices. B) give an example of each of the above. 2- State three safe working practices necessary in terms of...

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thanks alot guys, i need someone to answer these questions without regulation numbers and codes please. 1-a) Explain the terms "on load" and "off load" with reference to isolating devices. B) give an example of each of the above. 2- State three safe working practices necessary in terms of...

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can any one help me please ,i need answer ; 1-give ONE possible reason for each of the following. a) loss of supply to one floor of a multi-storey office block B) cable insulation failure c) RCD tripping on circuits which have passed an IR test 2-state a) in the correct order, the first...