Briefly describe application for RCBOs. for use mobile equipment out doors required IEE
Regulation 411.
23.
27. Use sketch show how ‘discrimination’ can applied piece of
equipment connected final circuit.
26.
a.
28.
. supplying socket outlets with rated current not exceeding 20A
and
b.257
U W
6 6
2 2
C1
L1 C1
2
C3
4
5
6
To phase supply
To phase motor
20.3.
22. State the meaning basic protection. State the need for RCDs electrical installation. Use bullet points and simple sketch briefly describe the operation
of RCD. Use sketch show the path taken earth fault current.3. List typical ‘exposed parts’ installation. State the meaning fault protection.
25.
24.
21. List typical ‘extraneous parts’ building
