هذه هى مادة الدليل والكتاب بالمرفقات

GENERAL POINTS
L.V. distributi** -D. 4
Communicati** networks-D. 12
WIRING SYSTEMS
Overload currents-D. 14
Short circuit currents-D. 20
Direct and indirect c**tacts -D. 27
DEVICES
Switching devices -D. 34
UL and NEMA specificati**s -D. 40
Fuses-D. 44
Energy management
DIRIS and COUNTIS-D. 55
Measuring -D. 59
Differential protecti** -D. 61
Insulati** m**itoring device-D. 66
Enclosures -D. 71
Busbars -D. 73