A 3 pin mains plug is fitted to

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Q.
A 3 pin mains plug is fitted to the cable for a 1 kW electric kettle to be used on a 250 V a.c. supply which of the following statements is not correct

1 The fuse should be fitted in the live wire.

2 A 13 A fuse is the most appropriate value to use.

3 The neutral wire is coloured black.

4 The green wire should be connected to the earth pin.

Ans.
(2)

$P = 1 k W = 1000 W, V = 250 V C u r r e n t, I = P / V = 1000 / 250 = 4 A $

Because current drawn is 4 A, a fuse of 13 A cannot be considered the most appropriate.

Solution

Q.
A 3 pin mains plug is fitted to the cable for a 1 kW electric kettle to be used on a 250 V a.c. supply which of the following statements is not correct

1 The fuse should be fitted in the live wire.

2 A 13 A fuse is the most appropriate value to use.

3 The neutral wire is coloured black.

4 The green wire should be connected to the earth pin.

Ans.
(2)

$P = 1 k W = 1000 W, V = 250 V C u r r e n t, I = P / V = 1000 / 250 = 4 A $

Because current drawn is 4 A, a fuse of 13 A cannot be considered the most appropriate.

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Solution

Q. A 3 pin mains plug is fitted to the cable for a 1 kW electric kettle to be used on a 250 V a.c. supply which of the following statements is not correct

1 The fuse should be fitted in the live wire.

2 A 13 A fuse is the most appropriate value to use.

3 The neutral wire is coloured black.

4 The green wire should be connected to the earth pin.

Ans. (2) P=1kW=1000W,V=250VCurrent, I=P/V = 1000/250 = 4A​ Because current drawn is 4 A, a fuse of 13 A cannot be considered the most appropriate.

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Q.
A 3 pin mains plug is fitted to the cable for a 1 kW electric kettle to be used on a 250 V a.c. supply which of the following statements is not correct

Ans.
(2)

$P = 1 k W = 1000 W, V = 250 V C u r r e n t, I = P / V = 1000 / 250 = 4 A $

Because current drawn is 4 A, a fuse of 13 A cannot be considered the most appropriate.