All our cPanel servers are running PHP with SuExec. Therefore, you DO NOT need to change any file or folder permission. By default, permission for file is 644 and folder is 755. Some scripts required you to change permission to 777 in order to read and write, but it does not apply to our server. With default permission, file and folder are able to be written.
Should you require further assistance, feel free to contact our support team anytime.