Here are some Platinum Eclipse G7 Speaker cables & XLRS (daisy chained) on the Hagerman FryKleaner Cable Burner. The loop is directionally closed in this 2nd phase of the "current" burn. The first burn phase prior was an open "voltage" burn of approx. 48 hours continuous.
The G7 speaker cables are stiff given their diameter & density but they can be carefully coaxed into the direction you want. I think with such a cable, you should factor around a 30mm bend radius for installations.
The XLRs are also stiff but the bend radius is only 20mm.
These are heavy cables but their density helps to support them. Notwithstanding, the speaker cables given their weight should be supported, eg. cable elevators.