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  #1  
Old 05-01-2013, 08:53 AM
idleup idleup is offline
 
Join Date: Oct 2005
Location: San Antonio, TX
Posts: 281
Default E-Bus relay location...

Do you all place the E-Bus relay on the engine or cockpit side of the firewall?

Do you have any pictures?

Thanks.
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  #2  
Old 05-01-2013, 10:30 AM
BillFear BillFear is offline
 
Join Date: Oct 2007
Location: Sherrills Ford, NC (Lake norman area)
Posts: 432
Default ebus relay

Ours was on the engine side of firewall. Brought in the 7.2ah backup battery. It was getting unreliable and I found a way to eliminate it. now just use a switch on the EXP bus panel to bring in the E bus battery and SD8 alternator.
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  #3  
Old 05-01-2013, 10:35 AM
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Mike S Mike S is offline
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Join Date: Sep 2005
Location: Dayton Airpark, NV A34
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Default

Switch only here also.

Switch is rated at 30A as I recall, I used a DPST switch and paired the double poles, so theoretically doubled the rating.
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Flying as of 12/4/2010

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  #4  
Old 05-01-2013, 10:42 AM
BillFear BillFear is offline
 
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Location: Sherrills Ford, NC (Lake norman area)
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Default relay

Quote:
Originally Posted by Mike S View Post
Switch only here also.

Switch is rated at 30A as I recall, I used a DPST switch and paired the double poles, so theoretically doubled the rating.

When I took out the Ebus relay I was shocked, it bet that thing weighs 2 lbs!
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  #5  
Old 05-01-2013, 11:00 AM
crabandy crabandy is offline
 
Join Date: Jan 2010
Location: Ottawa, Ks
Posts: 2,188
Default

I just mounted mine on the fuse tray. The s7401? Relay I used was just ounces.

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  #6  
Old 05-01-2013, 12:08 PM
idleup idleup is offline
 
Join Date: Oct 2005
Location: San Antonio, TX
Posts: 281
Default

Thanks Guys. I like the idea of a switch instead of a relay but I think the whole point of using the relay was to get the power line that you could not shut off out of the cockpit right?

- Matt
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  #7  
Old 05-01-2013, 12:59 PM
Wayne Gillispie Wayne Gillispie is offline
 
Join Date: Apr 2009
Location: USA
Posts: 1,499
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Quote:
Originally Posted by idleup View Post
Thanks Guys. I like the idea of a switch instead of a relay but I think the whole point of using the relay was to get the power line that you could not shut off out of the cockpit right?

- Matt

That is my reasoning on unprotected circuits. Would I rather have a relay fail(that can be bypassed to get me home) or burning plastic, sparks, smoke and molten copper produced during a crash?
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  #8  
Old 05-01-2013, 01:02 PM
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Mike S Mike S is offline
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Location: Dayton Airpark, NV A34
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Quote:
Originally Posted by idleup View Post
Thanks Guys. I like the idea of a switch instead of a relay but I think the whole point of using the relay was to get the power line that you could not shut off out of the cockpit right?

- Matt
Quote:
Originally Posted by Wayne Gillispie View Post
That is my reasoning on unprotected circuits. Would I rather have a relay fail(that can be bypassed to get me home) or burning plastic, sparks, smoke and molten copper produced during a crash?
Agree with the above, I put an inline fuse (30A as I recall) back at the battery.
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Mike Starkey
VAF 909

Rv-10, N210LM.

Flying as of 12/4/2010

Phase 1 done, 2/4/2011

Sold after 240+ wonderful hours of flight.

"Flying the airplane is more important than radioing your plight to a person on the ground incapable of understanding or doing anything about it."
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  #9  
Old 05-01-2013, 05:49 PM
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rzbill rzbill is offline
 
Join Date: Nov 2005
Location: Asheville, NC
Posts: 2,692
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Quote:
Originally Posted by idleup View Post
Thanks Guys. I like the idea of a switch instead of a relay but I think the whole point of using the relay was to get the power line that you could not shut off out of the cockpit right?

- Matt
I used a switch. The line coming from the battery bus to the E-bus switch is fused on the battery bus so that is not a cabin worry. The line from battery, through the firewall, to the battery bus fuse block was a worry until I put a fusible link on it at the battery post. Fuse link recommended by an AI that I asked to give me a once over prior to first flight. I agreed.
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