Expense and CapEx Set-Aside Fund Amount

[Charles Wiegert]

How much do you leave set aside for your property for expense or capitals. At what amount or percentage do you stop saving expense and capital funds, if ever? 

What is your plan for emergencies? if you have a couple properties do you lower the amount per property, i.e. expect that not every property will need capital improvements at the same time? 

Just curious & Thank you,

Charlie