[Elecraft] K2 mobile power fusing

Mon Jul 22 16:55:05 2002

This is why you don't want to connect your ground lead at the 
battery. Ground it at the chassis ground point used by the rest of 
the vehicle. That way, if the chassis-to-battery connection fails, 
your K2 is not part of the new path.

I also do not fuse my ground line.........that's a different discussion.

Chuck

Note Bob Lewis (AA4PB)'s stunning brilliance and Chuck's apt reply 
(gack!)

Send reply to:  	"Bob Lewis (AA4PB)" <[email protected]>
From:           	"Bob Lewis (AA4PB)" <[email protected]>
To:             	<[email protected]>
Subject:        	Re: [Elecraft] K2 mobile power fusing
Date sent:      	Mon, 22 Jul 2002 15:51:14 -0400

> > so what happens if the fuse in the negative lead blows ?
> 
> Yes, the rig will still be grounded via other paths (coax shield, case
> mounting, etc) and you might not even realize it has blown. The reason
> for having a negative lead fuse is still valid however. If you take
> the negative lead back to the battery and if the vehicle's grounding
> wire between the engine block and the battery negative were to open,
> all the vehicle's current including the starter current would attempt
> to flow through your coax, mount, radio, and ground lead. In order to
> protect the radio system from an open or high resistance battery
> ground lead, a fuse is used in the negative radio lead. It should be
> sized the same as the fuse in the positive lead.
> 
> 
> 
> _______________________________________________
> Elecraft mailing list: [email protected]
> You must be a list member to post to the list. 
> Postings must be plain text (no HTML or attachments). 
> See: http://mailman.qth.net/mailman/listinfo/elecraft
> Elecraft Web Page: http://www.elecraft.com