Having seen the specification from GTB, which PVC sheathed cable do you think is any better than SY, which will more than meet the tensile strength specification, is thermoplastic sheathed TWICE, and is probably at least as robust as the others in the list. The only one missing is a polyurethane sheathed cable, and these are more robust than any of those listed, being very tough and thermosetting. Your hazardous area is presumably an area with a potentially explosive / flammable atmosphere, and with the correct glands many kinds of cables would be suitable.

SY can be obtained which is made to BS6500, and has BASEC approval, so I see no reason for it to be unsatisfactory, and would be a good choice if the cables are subject to movement, which you say they are when being plugged in, and vibration could also be a problem. There are not a lot of alternatives available, and polyurethane cables are unusual and expensive and again do not have a BS!

Having seen the specification from GTB, which PVC sheathed cable do you think is any better than SY, which will more than meet the tensile strength specification, is thermoplastic sheathed TWICE, and is probably at least as robust as the others in the list. The only one missing is a polyurethane sheathed cable, and these are more robust than any of those listed, being very tough and thermosetting. Your hazardous area is presumably an area with a potentially explosive / flammable atmosphere, and with the correct glands many kinds of cables would be suitable.

SY can be obtained which is made to BS6500, and has BASEC approval, so I see no reason for it to be unsatisfactory, and would be a good choice if the cables are subject to movement, which you say they are when being plugged in, and vibration could also be a problem. There are not a lot of alternatives available, and polyurethane cables are unusual and expensive and again do not have a BS!