Lyc Cnty. Pa. 4005
In the case of interrogatories served pursuant to Pa. R.C.P. No. 4005, the first set of interrogatories propounded to a party may not exceed fifty (50) in number, including subparts, whether or not they are separately numbered. In the event that the response given to the first set of interrogatories is considered by the requesting party to indicate a need for additional interrogatories, a second set of interrogatories, limited to fifty (50) including subparts, may be served upon a party. The second set of interrogatories must be case specific. The responding party shall not be compelled to answer any interrogatories beyond the number allowed under this rule. The court may, in its discretion, allow additional interrogatories to be served in an appropriate case.
Lyc Cnty. Pa. 4005