Play clock setting on change of possession...

[Official_21]

What is the play clock set to on a change of possession, other than after a scrimmage kick (punt), which I know is 25 seconds?

The cheat sheet that I have on running the play clock says the following:
First Down in Bounds: 40 secs
First down out of bounds: 40 secs

So, my understanding according to the above, the play clock is reset to 40 secs after any other change of possession (IE an interception), since it is not an administrative stoppage.

[Kalle]

25 seconds. Rule 4-2-4-c-6: Team B is awarded a first down.

[ElvisLives]

Expanding on Kalle's response a bit.
Firstly, we have to assume you are talking about a regular scrimmage down. Based on that understanding, if there are no other reasons that affect the play clock, such as an administrative stoppage (completion of a penalty, measurement, etc.), the key is: Will Team A or Team B actually next put the ball in play by snap? If the answer is Team A, then the play clock is 40 seconds and 'automatic' (i.e., started automatically by the PCO when the ball becomes dead after the previous down). If the answer is Team B, then the play clock is 25 seconds, and starts on the referee's signal.
Examples:
A advances beyond the LTG and the ball becomes dead: 40 (automatic).  This is an award of a first down to Team A.
B intercepts/recovers A's fumble or legal pass, then A regains possession by catching/recovering B's fumble or backward pass and the ball becomes dead: 40 (automatic) This is called "A-B-A,"  and is an award of a first down to Team A.
B catches/recovers A's fumble or pass, and the ball becomes dead: 25, and starts on the referee's signal. This is an award of a first down to Team B.

There are lots of other situations, of course, but you only asked about COPs during (non-kicking) scrimmage downs.

[Official_21]

Expanding on Kalle's response a bit.
Firstly, we have to assume you are talking about a regular scrimmage down. Based on that understanding, if there are no other reasons that affect the play clock, such as an administrative stoppage (completion of a penalty, measurement, etc.), the key is: Will Team A or Team B actually next put the ball in play by snap? If the answer is Team A, then the play clock is 40 seconds and 'automatic' (i.e., started automatically by the PCO when the ball becomes dead after the previous down). If the answer is Team B, then the play clock is 25 seconds, and starts on the referee's signal.
Examples:
A advances beyond the LTG and the ball becomes dead: 40 (automatic).  This is an award of a first down to Team A.
B intercepts/recovers A's fumble or legal pass, then A regains possession by catching/recovering B's fumble or backward pass and the ball becomes dead: 40 (automatic) This is called "A-B-A,"  and is an award of a first down to Team A.
B catches/recovers A's fumble or pass, and the ball becomes dead: 25, and starts on the referee's signal. This is an award of a first down to Team B.

There are lots of other situations, of course, but you only asked about COPs during (non-kicking) scrimmage downs.

Your assumption was correct, it was for a regular scrimmage down.
Thanks for the detailed explanation.

25 seconds. Rule 4-2-4-c-6: Team B is awarded a first down.

Thanks to both of you for your replies 

Second year of running the clocks for me. Always looking to learn and get better at what I do

[Official_21]

Just to make sure I now understand, on a scrimmage down:

If it ends up being a Team A possession, the play clock is set to 40 seconds and is automatically started
If it ends up being a Team B possession, the play clock is set to 25 seconds and is started on the R's ready signal

Now, if I have that correct...what happens in the following scenario on a scrimmage down:

Team B intercepts the ball and gains possession. Then there is a timeout for a Team B injury.

Does the Team B injury take precedent and you set the play clock to 40 seconds or would it still be set to 25 seconds because of the interception?

[Clear Lake ref]

Has the ball been declared ready for play for the new possession and now a player on new Team B is hurt?

Or was team B player hurt on play where they gained possession?

If first, it would have been 25 then 40 on the reset.

On 2nd it’s 25 once the injured player is clear and teams are ready.

[Kalle]

Note that the injury/helmet-off rules talk about offense and defense, not team A and B. So, it really depends on a) who had the ball at the time of the injury/helmet-off or b) who has the ball at the end of the down (and will next snap the ball). To be honest, I'd just set the play clock to 25 if there is a real change of possession during the down and team B will next snap the ball - there is no advantage gained.

[Official_21]

Has the ball been declared ready for play for the new possession and now a player on new Team B is hurt?

Or was team B player hurt on play where they gained possession?

If first, it would have been 25 then 40 on the reset.

On 2nd it’s 25 once the injured player is clear and teams are ready.

That clears it up and from my understanding it would be the opposite if the same thing occurred on team A?

Note that the injury/helmet-off rules talk about offense and defense, not team A and B. So, it really depends on a) who had the ball at the time of the injury/helmet-off or b) who has the ball at the end of the down (and will next snap the ball). To be honest, I'd just set the play clock to 25 if there is a real change of possession during the down and team B will next snap the ball - there is no advantage gained.

I see.
Didn't even realize that. Have got used to seeing Team A and Team B throughout the NCAA rulebook.
Also, it's a good suggestion. The R can always reset the play clock if need be.