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KB2VXA > ALL 06.09.13 22:13l 34 Lines 1646 Bytes #999 (0) @ WW
BID : 43720_VK6ZRT
Read: GUEST
Subj: Re: G8MNY > power lead issues
Path: IZ3LSV<I0OJJ<VE3UIL<VK2DOT<VK6ZRT
Sent: 130906/2007Z @:VK6ZRT.#BUN.#WA.AUS.OC #:43720 [Boyanup] $:43720_VK6ZRT
From: KB2VXA@VK6ZRT.#BUN.#WA.AUS.OC
To : ALL@WW
Hi John and all,
I understand the theory behind fusing the negative lead but I understand tha
fallacy of it better. The heavy battery leads go directly to the starter, the
negative one to the engine block nearby. That's the high current path, the
light lead to the car body near the battery and grounding straps from the
engine, transmission and such to the body make nice fuses should the
connection to the block fail. The same goes for the radio negative, coax and
whatever ground straps that may be installed, quite a smoky mess resulting
from the turn of a key. I say fallacy because I for one have never seen such
a ground fault develop on its own, a careless mechanic can get you a new
radio, new car, new anything else lost in the fire, good insurance is a
win-win situation. No you won't fry unless you're a dummy in a Hollywood
movie where they all explode in flames.
BTW I've never seen commercial gear with extra fuses, manufacturers expect
them to be installed and maintaned by professionals, not Amateurs. (pardon
the sick pun) The radio shop monkeys know to check all connections mentioned
above, anyone who installs any sort of electronics should do likewise IMO.
Oh hey, just remembered something. I saw Max fuses show up in battery
harnesses for commercial rigs before the automobile industry adopted them as
standard. Seems like they were ahead of the pack dealing with high current in
line fuses in harsh environments.
73 de Warren
Station powered by JCP&L atomic energy, operator powered by natural gas.
Message timed by NIST: 06-Sep-2013 at 19:53 GMT
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