[nharris]

So, I'm in the process of planning out my system. I'll be using Vertical Powers VP-X sport. One thing I like about it is the ability to use any switch, as the switch doesn't need to carry the load. I decided to go with these small lightweight rocker switches: https://www.digikey.ca/en/products/...NE/446066?s=N4IgTCBcDaIMIAkAcAGFBaAcgERAXQF8g

But one thing I didn't think of is, I believe the Master battery switch still needs to carry that load as it doesn't go through the VP-X. Can anyone confirm that? and if so, what Load rating is required for the Master Switch?

 

[dmattmul]

You'll probably want to use a continuous duty contactor so the lightweight rocker switches you are using will work or a keyed ignition switch also will work. Keeps the larger wires FWF.

 

[stigaro]

So, I'm in the process of planning out my system. I'll be using Vertical Powers VP-X sport. One thing I like about it is the ability to use any switch, as the switch doesn't need to carry the load. I decided to go with these small lightweight rocker switches: https://www.digikey.ca/en/products/...NE/446066?s=N4IgTCBcDaIMIAkAcAGFBaAcgERAXQF8g

But one thing I didn't think of is, I believe the Master battery switch still needs to carry that load as it doesn't go through the VP-X. Can anyone confirm that? and if so, what Load rating is required for the Master Switch?

I'm just starting my panel as well using the VPX, but I think the master is usually connected to the contactor relay. When you ground the contactor, the +12V gets passed through the contactor. The current through the master switch should only be what the contactor requires to remain closed (usually around 1A, I believe).

Here's a good article on this: https://www.kitplanes.com/aircraft-wiring-4/

 

[pazmanyflyer]

So, I'm in the process of planning out my system. I'll be using Vertical Powers VP-X sport. One thing I like about it is the ability to use any switch, as the switch doesn't need to carry the load. I decided to go with these small lightweight rocker switches: https://www.digikey.ca/en/products/...NE/446066?s=N4IgTCBcDaIMIAkAcAGFBaAcgERAXQF8g

But one thing I didn't think of is, I believe the Master battery switch still needs to carry that load as it doesn't go through the VP-X. Can anyone confirm that? and if so, what Load rating is required for the Master Switch?

No load through the switch and you use a 20 AWG wire from switch to contactor. "The master contactor (aka master relay, master solenoid) is controlled by applying ground to the small post on the contactor." See page 27, section 5.5 Master Contactor Wiring of the VP install manual. https://www.google.com/url?sa=t&sou...EQFnoECBUQAQ&usg=AOvVaw0JBBVLgc3ny62ALyTMbH6N

 

[rocketman1988]

No load through the switch and you use a 20 AWG wire from switch to contactor. "The master contactor (aka master relay, master solenoid) is controlled by applying ground to the small post on the contactor." See page 27, section 5.5 Master Contactor Wiring of the VP install manual. https://www.google.com/url?sa=t&sou...EQFnoECBUQAQ&usg=AOvVaw0JBBVLgc3ny62ALyTMbH6N

Actually there is a load through the switch; it is the current required to energize the coil, typically less than 1 amp on most master contactors.