Rated with household members?

Hi,

Is it allowed to do rated arenas with people in your house, even if they're on different PCs?

For anyone wondering, I wanted to ask this as me and my family play this game together.
We do pretty much every activity together. Such as leveling, questing, dungeons, battlegrounds and etc.
We want to start doing arenas to get gear, but are afraid that it will be seen as wintrading. Any answers would be helpful!