abenard

I have a new hottub. It needs to be hard wired, but I don't have a hook up for it. I got 220 wire. My friend that is hooking it up doesn't think it is the right gauge. He told me to look at the guage on the wire, but I didn't see anything about gauge. The information that is on the wire reads: Chambers/Lorenzo E30445 (UL) AWG 10 CU 3 CDR with AWG 10 Ground Type UF-B 600 Volts Sunlight resistant. So my question is: Is this the right gauge of 220 wire I need to hook up my hottub. I don't know anything about hottubs, except they feel great. I want and need to get it hooked up soon!!!!! Can and will someone help me with my question about the gauge of the wire??? PLEASE