Now that the conductor length is factored to determine minimum gauge diameter we can apply a safety margin by increasing the size which provides increased circuit integrity in respect to losses which occur off paper in the actual aircraft. An example of a simple circuit might be as follows: Battery Bus (+) to Breaker Switch to Load at wing measures 18 feet. And the Load is grounded (-) at a ground bus (-) located at the instrument panel 16 feet long. So the Conductor Length is a total of 18'+16' thus 34 feet is the conductor length in this dc circuit. While a chart or formula provides the minimum gauge wire size we need to consider the circuit breaker sizes available: The wire gauge diameter must be sufficiently greater than the circuit breaker rating. In my opinion it should be sized 50% greater than the actual circuit load at minimum. ✌🏻👶🏻🚬 Just my .02 cents (2/100 of a USD)
@@gavinssonexb Found mistakes in certified airplane wing circuits. The starter motor ground path is interesting to look at too. Obviously, the DC ground system becomes the conductor and the electrons flow from the starter case through the least path of resistance. What is it? The aluminum case, steel fixtures - just what will become the path. In the Pratt and Whitney, PT 6, some some airplane manufacturers and electrical system designers have left this to nature. Unfortunately, the electrons will flow from the starter generator through the turbine case and an arc can flash into and out from the turbine bearing......an hour later- catastrophic failure. If the designer had just insured a proper ground path using a suitable conductor like copper cable or better 2" flat braided tinned copper strap back to the battery ground.
![How To Read Wiring Diagrams [an SD Premium Class]](http://i.ytimg.com/vi/DMKTSGbE2eM/mqdefault.jpg)
Good work !
Perfect example of 98% done only 20% more to go! Great job. Interesting to see the engine fired up and taxi tests.
Thanks for the vid, Gavin. Your airplane is going to be Awesome! 👍
Now that the conductor length is factored to determine minimum gauge diameter we can apply a safety margin by increasing the size which provides increased circuit integrity in respect to losses which occur off paper in the actual aircraft. An example of a simple circuit might be as follows: Battery Bus (+) to Breaker Switch to Load at wing measures 18 feet. And the Load is grounded (-) at a ground bus (-) located at the instrument panel 16 feet long. So the Conductor Length is a total of 18'+16' thus 34 feet is the conductor length in this dc circuit. While a chart or formula provides the minimum gauge wire size we need to consider the circuit breaker sizes available: The wire gauge diameter must be sufficiently greater than the circuit breaker rating. In my opinion it should be sized 50% greater than the actual circuit load at minimum. ✌🏻👶🏻🚬 Just my .02 cents (2/100 of a USD)
The voice of experience is always welcome and should be respected ☺ Wise words 🙏
@@gavinssonexb Found mistakes in certified airplane wing circuits. The starter motor ground path is interesting to look at too. Obviously, the DC ground system becomes the conductor and the electrons flow from the starter case through the least path of resistance. What is it? The aluminum case, steel fixtures - just what will become the path. In the Pratt and Whitney, PT 6, some some airplane manufacturers and electrical system designers have left this to nature. Unfortunately, the electrons will flow from the starter generator through the turbine case and an arc can flash into and out from the turbine bearing......an hour later- catastrophic failure. If the designer had just insured a proper ground path using a suitable conductor like copper cable or better 2" flat braided tinned copper strap back to the battery ground.