Many of the cPanel user do not know that their server administrator could exclude any of their folder from the cPanel cpbackup process and those folder could be exclude from backup to safe the disk space usage.
Or you could exclude any of your dynamic file(possible that you host some dump services such as RapidLeech) and you do not want to backup them.
You may actually exclude them easily from include the path to cpbackup-exclude.conf file.
1. Edit the file cpbackup-exclude.conf from your /home/user folder.
2. Add the folder that wish to exclude from backup from cpbackup-exclude.conf file.
3. You have done it.