unlimited. short-circuit current. 5. circuit protective conductor
c. overload current
d. consumer unit. fuse
d.0s
d.
16. 0. 0.4s
c. List the five essential requirements for device designed protect
against overcurrent. ensure the effective operation the overcurrent protective devices,
the earth fault loop path must have:
a.
.
19.11. current which exceeds the rated current otherwise healthy
circuit one definition of:
a.
15.3. fuses MCBs the live conductor
d. overcurrent
c.
18. Briefly explain why electrical installation needs protective devices. List the four factors which the selection protective device
depends. State the meaning ‘discrimination’ applied circuit protective
devices.2s
b.2.2 all final circuits not exceeding
32A building supplied with 230V supply shall have a
maximum disconnection time not exceeding:
a.
12.
14.
17. fault protection
b. Briefly describe the action fuse under fault conditions. The weakest link the circuit designed melt when overcurrent
flows one definition of:
a. fault protection
b. 230V supply
b.
13. According IEE Regulation 411. very high resistance. very low resistance
c
