Final answer:
To determine which replacement fuse would be safer, consider the current rating and the current flowing through the circuit. A 24 A fuse would be safer than a 17 A fuse as it can handle the current in the circuit with a higher safety margin.
Step-by-step explanation:
To determine which replacement fuse would be safer, we need to consider the current rating of the fuse and the current flowing through the household circuit. A 19 A fuse indicates that the circuit is designed to handle a maximum current of 19 A. If a 17 A fuse is used as a replacement, it would have a lower current rating than the original fuse. This means that it may not be able to handle the current in the circuit, potentially leading to overheating and damage.
On the other hand, if a 24 A fuse is used as a replacement, it would have a higher current rating than the original fuse. This means that it would be able to handle the current in the circuit and provide an additional safety margin. Therefore, the 24 A fuse would be the safer option.