G3X Power On / Off

[rdrcrmatt]

Or, for simulating partial panel, just cover up the PFD, Navigator, etc and let your safety pilot have full instrumentation.

[RONSIM]

Control the avionics buss, but each pc. of equipment in the plane has a pullable circuit breaker --- in the case of the 650/430 each requires more than one breaker (nav, com, cdi).

The breakers make if very easy to trouble shoot or isolate. I know some folks try to minimize the number of breakers --- I pretty well maximized mine.

Ron

[Bavafa]

Originally Posted by RONSIM

Control the avionics buss, but each pc. of equipment in the plane has a pullable circuit breaker --- in the case of the 650/430 each requires more than one breaker (nav, com, cdi).

The breakers make if very easy to trouble shoot or isolate. I know some folks try to minimize the number of breakers --- I pretty well maximized mine.

Ron

True but some of the avionics has redundant power lead and unless one has both power leads thru CB this is not easily accomplished. In my case the aux TCW feed the second lead and the passthru wires will keep the equipment energized even if I switch its master off. I am planning on putting a relay on TCW so I can shut all power to the TCW battery with one toggle switch

[snoop9erdog]

Originally Posted by Bavafa

True but some of the avionics has redundant power lead and unless one has both power leads thru CB this is not easily accomplished. In my case the aux TCW feed the second lead and the passthru wires will keep the equipment energized even if I switch its master off. I am planning on putting a relay on TCW so I can shut all power to the TCW battery with one toggle switch

Bavafa,

Why not just eliminate the pass thru function of the TCW rather than place a relay? Or would it have been better to wire like that (eliminate passthru) in the first place? Asking because I'm finalizing my wiring with the TCW IBBS and wondering what the real value of the passthru is if the IBBS is a last resort backup power in a complete main buss electrical failure.

Upon startup you have the IBBS switch on to test the IBBS backup system and ensure that it is functioning.....with the passthru, how do you know you are testing only the independent IBBS system??

[supik]

Originally Posted by snoop9erdog

Bavafa,

Why not just eliminate the pass thru function of the TCW rather than place a relay? Or would it have been better to wire like that (eliminate passthru) in the first place? Asking because I'm finalizing my wiring with the TCW IBBS and wondering what the real value of the passthru is if the IBBS is a last resort backup power in a complete main buss electrical failure.

Upon startup you have the IBBS switch on to test the IBBS backup system and ensure that it is functioning.....with the passthru, how do you know you are testing only the independent IBBS system??

IBBS test: MASTER OFF, IBBS ON
PASSTHROUGH test: IBBS OFF, MASTER ON

[tjyak50]

Originally Posted by snoop9erdog

Bavafa,

Why not just eliminate the pass thru function of the TCW rather than place a relay? Or would it have been better to wire like that (eliminate passthru) in the first place? Asking because I'm finalizing my wiring with the TCW IBBS and wondering what the real value of the passthru is if the IBBS is a last resort backup power in a complete main buss electrical failure.

Upon startup you have the IBBS switch on to test the IBBS backup system and ensure that it is functioning.....with the passthru, how do you know you are testing only the independent IBBS system??

Contemplating this same thing now.
With IBBS passthru you would have to pull a GDU breaker and pull the 10A IBBS breaker to reset a GDU? Almost seems like the passthru is defeating the purpose of the GDU breaker to begin with.
Let alone, seems like a single point of haywire if the IBBS battery were to decide to make trouble?

Might S/C the passthru wires we installed.