257
U W
6 6
2 2
C1
L1 C1
2
C3
4
5
6
To phase supply
To phase motor
20.
21. supplying socket outlets with rated current not exceeding 20A
and
b. Briefly describe application for RCBOs.
24.3. List typical ‘extraneous parts’ building. List typical ‘exposed parts’ installation.3.
23. State the meaning basic protection.
a.
25.
28.
27. Use sketch show how ‘discrimination’ can applied piece of
equipment connected final circuit. State the need for RCDs electrical installation.
22. State the meaning fault protection. Use bullet points and simple sketch briefly describe the operation
of RCD. Use sketch show the path taken earth fault current. for use mobile equipment out doors required IEE
Regulation 411.
26.
