[val101]

hi all

could someone please explain to me why i need the follwing information at the design stage of an istallation -

- Prospective earth fault current (I)
- The value of external impedance (Ze)
- Assumed current demand of the installation
- Disconnection times of certain light fittings

Many thanks

 

[nap]

because whoever is going to approve your installation requires it.


still in school I see.


http://www.diychatroom.com/f18/eal-certified-domestic-installer-course-45570/

http://www.diychatroom.com/f18/physics-question-19367/