I have a general question about the various Garmin G3X Touch components that offer dual power inputs. What failure risk is there connecting both of these inputs?
For example, imagine a two-alternator, two-battery split electrical system. Your PFD has one power input connected to alt1+bat1 and the other power input connected to alt2+bat2. It would seem like a very high amount of redundancy, since you'd have to lose both batteries and both alternators before you'd lose power.
But what about failure events? The primary one I can think of is an overvoltage situation. What if one of the alternators sends extremely high voltage to one of the two electrical busses? Could that damage the Garmin components that are connected to it, causing it to fail even though the other electrical bus is just fine? Obviously with extremely high voltage (e.g. a direct lighting strike) it will fail, but is there any reasonable failure where it would be a disadvantage to having two power sources connected to a critical component?
For example, imagine a two-alternator, two-battery split electrical system. Your PFD has one power input connected to alt1+bat1 and the other power input connected to alt2+bat2. It would seem like a very high amount of redundancy, since you'd have to lose both batteries and both alternators before you'd lose power.
But what about failure events? The primary one I can think of is an overvoltage situation. What if one of the alternators sends extremely high voltage to one of the two electrical busses? Could that damage the Garmin components that are connected to it, causing it to fail even though the other electrical bus is just fine? Obviously with extremely high voltage (e.g. a direct lighting strike) it will fail, but is there any reasonable failure where it would be a disadvantage to having two power sources connected to a critical component?