[Land-speed] Wiring and Fuses

[James Tone]

Whether you stated or not that still is the size wires that should be used....CB size is 10% over the continuous rating capacity of the wire. DC also loses voltage at a higher rate than AC with distance. Race vehicle should make no difference. I use #12 for fuel pumps and water pumps even though I knopw that is twice the required size for the current of the component. Whether wise or not I don't use many fuses.
>
>JD;
>
>NO, these are CB ratings for various wire sizes. 
>
>Note that I said "These ratings are only for CB protection of the wiring
>itself, not how big a wire you should use for a particular load current."
>
>Regards, Neil  Tucson, AZ

>Subject: Re: [Land-speed] Wiring and Fuses
>
>These numbers are for continuous current. Most cars today have 100 amp or 
>higher alternators and you never see #4 wire on any of  them. You are lucky 
>to see a #10. This is not telling to use smaller wire this is just an 
>observation. I use a #8 on my alternator and #1 or 1/0 for batterey cables. 
>That was the old sizes for 6 volt cars. Use the same size as your battery 
>cable to ground the engine to the frame. If you use a an ignition box and 
>mount it on lord or rubber mounts be sure to put an extra chassis ground on 
>it even if one of the wires comimg out of it goes to a ground...Good Luck
>
>Also If you are smart you will not use crimped fittings. Buy the 
>noninsulated ones if possible and solder all ends. (you can remove the 
>insulation) Apply numbered or colored heat shrink over each solder joint
>>
>> Copper Wire Size  Circuit Breaker (amps)
>>
>> #22 & #20 5
>> #18 10
>> #16 15
>> #14 20
>> #12 25 or 30
>> #10 35 or 40
>> #8 50
>> #6 80
>> #4 100
>> #2 125
>>
>> Bear in mind that wire temperature will be higher if it is enclosed or
>> bundled into a cable. These ratings are only for CB protection of the 
>> wiring
>> itself, not how big a wire you should use for a particular load current.
>>
>> I hope this may be helpful.
>>
>> Regards, Neil  Tucson, AZ