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-   -   Battery cable size (https://vansairforce.net/community/showthread.php?t=164504)

ScottCC 09-25-2018 11:17 AM

Battery cable size
 
I'm at the point of running wiring from the aft fuselage to firewall (RV10) and am trying to decide what size battery cable to use. Is AWG 02 good or is 01 better? What amp rating should I be looking for?
Also I'd like to use firewall pass thru connectors.
I'd like to use a pass thru connector that can be insulated but having trouble finding one. Source suggestions?
Thank you!
Scott

Carl Froehlich 09-25-2018 11:28 AM

#2 welding cable, like one of these: https://www.amazon.com/s/ref=nb_sb_n...+welding+cable

Use #6 welding cable for the alternator output.

The RV-14 comes with a nice SS firewall passthrough. Van?s part number is F-00001. http://vansaircraft.com/cgi-bin/stor...&action=search

Use a piece of fire sleeve a few inches long on the inside of the passthrough, then a larger piece of firesleeve on the engine side to go over the wires, then a hose clamp to hold it on the outside diameter of the passthrough.

Carl

ScottCC 09-25-2018 12:07 PM

Thanks Carl!
I actually saw that on Amazon but wasn't sure about it. I'll use that (good price too). Didn't see a picture of that firewall pass-thru on Van's...
Thank you...helps a ton.

rocketman1988 09-25-2018 12:15 PM

yep
 
Second that on the #2 cable.

I ended up buying the tefzel wire up front, so I used it. If I had to do it again, the welding cable would be my choice...it's FAR more flexible than the tefzel wire.

I used welding cable for battery and contactor wiring, works good.

Carl Froehlich 09-25-2018 12:16 PM

You have to order the F-00001 passthrough using Van?s ?the list?.

Carl

ScottCC 09-25-2018 12:46 PM

Thanks Bob,
Bob Nuckolls has a nice description on how to make your own terminals for the connection for cable. May try it.
Thought West Marine had a nice pass thru but can't seem to find it.
Probably get the one from Van's
Scott

rocketman1988 09-25-2018 01:58 PM

or these...
 
https://www.vtewarehouse.com/content...r_bushings.php

ScottCC 09-25-2018 02:34 PM

wow, those look great. Thanks Bob
I wanted one that bolts to the firewall but these look pretty stout..don't look like they'd come loose.
Scott

az_gila 09-25-2018 03:49 PM

Quote:

Originally Posted by ScottCC (Post 1291040)
wow, those look great. Thanks Bob
I wanted one that bolts to the firewall but these look pretty stout..don't look like they'd come loose.
Scott

Interestingly that one does not even mention firewall use, unlike the versions from the race care stores.

They label it for "sealing" use.

Jasonm 09-25-2018 05:10 PM

I used this for my firewall battery cable pass through.

https://www.amazon.com/Red-Remote-Ba...ewall+terminal


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