I don't really have much detail but my mum asked me to look it up so if you know what shes going on about give me an answerThanks in advance :D
Electrical wire is measure by its diameter and this is done using a wire gage measure. Most house wiring is 12 gage with some a bit smaller at 14 gage. Some special circuits will use 10 gage or 8 gage wire because the electrical load i much larger. A electric store or electric dryer are examples of these types of loads. The wire gage number gets smaller as the wire gets bigger. See the link below for more info.
Is it possible she's looking for ampacity ratings? The link below lists the current-carrying capacity, or ampacity, of wire against diameter. In terms of current carrying, thicker is always better. In terms of cost, thinner is better. A household branch should be rated for at least 15 A. Appliances may use 20-30 A or more.
