Hi all, I had my downstairs pre-wired 3 years ago in the new house but didn't know much about cables at the time (don't know much now either ). I think builder/contractor had installed just the regular non-CL related wire. Wire's jacket is all clear and there are no marks of any kind on it. It looks very similar to 14ga wire with clear jacket you can get at the HomeDepot. Could that still be CL-rated wire or there is really no way of knowing? Thanks in advance.