Is a zero balance credit utilization good for my credit score?

Credit utilization refers to how much of your credit line(s) is in use; it’s also called your debt-to-limit ratio. If your cumulative limit across your three credit cards is $10,000 and you carry a cumulative balance of $1,500, then your credit utilization is 15 percent. (Less than 30 percent is recommended.) Is it better to …