18.3.
14.
.
12.
17. current which exceeds the rated current otherwise healthy
circuit one definition of:
a.2 all final circuits not exceeding
32A building supplied with 230V supply shall have a
maximum disconnection time not exceeding:
a. 5.
19. short-circuit current. unlimited. Briefly describe the action fuse under fault conditions. fuse
d. 0. State the meaning ‘discrimination’ applied circuit protective
devices. List the five essential requirements for device designed protect
against overcurrent. 0.2. The weakest link the circuit designed melt when overcurrent
flows one definition of:
a. fault protection
b.4s
c. very low resistance
c. ensure the effective operation the overcurrent protective devices,
the earth fault loop path must have:
a. Briefly explain why electrical installation needs protective devices. very high resistance. circuit protective conductor
c.
16.2s
b.
15. fuses MCBs the live conductor
d. overcurrent
c. According IEE Regulation 411.
13.11.0s
d. 230V supply
b. consumer unit. fault protection
b. overload current
d. List the four factors which the selection protective device
depends
