Many of you have cakes w/ wires coming out the top w/ figures on the ends. What gauge wire is this?
. . . usually 18 - 20 will do for most applications . . . but it will depend on what you are trying to support . . . finer if small light weight items are being suspended . . . heavier if larger heavier items are in use . . . you will want to wrap the wire and probably use straws in your cake to channel the wires into your cake for better support (and wires not coming in contact with your cake) . . . hth
I use 16 to 18 gage depending on the weight of the item
I saw a lindy smith do a demo in fl last week she gave a great tip on putting wire fountains in the top of your cake. she takes a floral pick with some floral clay inside to secure her wires so they dont twirl around. also she uses 20 gauge wire unless she needs something for heavier objects