Roland Wiench wrote:
> Hello Corbin,
>
> When we install industrial wiring with different voltage and phasing range,
> it is best to group the same voltage wires together in a separate conduit or
> duct way. Each wire then can have its own voltage rating. Do not place 600
> voltage rating wire that carries a higher voltage then a lower voltage
> rating wire as for 12 volt.
>
> You can group wires together with different voltages, if all the wires are
> rated at the highest voltage. I use 600 volt double jacket wire that is
> design for chassis work. It has a thicker softer insulation than the wire
> that is design for conduit.
>
> If the lower voltage wires are control voltages and communication systems
> between sensor and instruments, these wires should be shielded or sometimes
> double shield.
>
> I run all my power cables, charging cables, high voltage, low voltage,
> communication systems and the Link-10 cable all in the same duct way that
> goes through the center console in the vehicle.
>
> The comm wires and Link-10 cables are double shield where there is a
> floating ground shield around each wire which is bundle together, inner
> jacket and another ground shield that is only connected to the vehicle
> chassis ground.
>
> I then install each cable and wire circuits in a separate black plastic
> thinwall flexible conduit made by Thomas and Betts or you can use wire loom
> you can get at a auto store. Thomas and Betts make black plastic conduit
> box connectors that will attach to these type of conduit. It makes a
> professional type of installation where you do not have any bare wiring
> showing.
>
> I also run a counterpoise ground system in my EV. Instead of relying on the
> sheet metal of a vehicle to carry the grounding circuits, I run a No. 1 AWG
> 39 strand insulated copper wire in a complete circle around the inside of
> the vehicle from the negative of the 12 volt battery or 12 volt DC-DC
> converter and then back again to the negative.
>
> Each panel is ground by using a plated through bolt standoff that attaches
> the wire connector and take off to other equipment. Then I may have
> separate ground wires going to the negative too. I also ground all
> electrical enclosures and chassis plates at two points each.
>
> In my comm system, I do not have any noise at all on my AM, even though the
> speaker wires which are also double shield run though the same duct way.
>
> Roland
>
>
>
>
>
>
>
> ----- Original Message -----
> From: "corbin dunn" <
[email protected]>
> To: "EVDL Discussion List" <
[email protected]>
> Sent: Friday, December 31, 2010 6:12 PM
> Subject: [EVDL] High voltage wiring next to low voltage wiring
>
>
>> Hi All,
>> This might be a silly question, but I'm new to building my own EV. Is it
>> bad to have a single high voltage 2/0 wire right next low voltage wiring
>> for the car? Or, will there be some sort of back EMF noise that will
>> affect things? Or, is it okay to do this?
>>
>> thanks!
>> corbin
>>
>>
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