ht speaker wires

[mr hardware]

Hi guys

I have a 5m x 5m room that I am gonna use my Nad T737 7.1 ht amp in. The speakers I'm using is wharfedale valdus as fronts and yamaha nx e130 surrounds and centre.I have yet to get a sub.

My question is,what guage of speaker wire is ideal for the surrounds?

 

[CAD]

 

[KenMasters]

 

[CAD]

 

[xrapidx]

 

[chrisc]

 

[Zola]