I see 3 of the 6 resonders got it right.
The answer is No and No.
I have asked this same question to 2 DOT officers and both of them got it wrong so do not feel to bad.
I asked this question because this is where I think a lot of you are getting the assumption that if a trailer is over 10,000 lbs you need a CDL.
To need a class A CDL you have to answer yes to two questions.
Is the GCWR over 26,000 lbs AND (NOT OR) is the trailer GVWR over 10,000 lbs.
If you can answer yes to both of these questions you need a class A.
Class B deals with straight trucks only. If the truck alone is over 26,000 lbs you need a class B. No trailer of any size can make you need a class B it is all about the truck.
Commercial or not commercial does not come into play with CDL rules. You have to have a direct exemption to get out of CDL rules.
They may be doing away with that last paragraph. I have to do a little more research with the new rules to answer that.
The old rules use to exempt things like RV's but I think that exemption is being done away with and the wording to who needs a CDL is being re-worded.