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cat5 and electric wire interfere

 
 
L.D.
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      06-21-2007
I need to run a phone wire and a 220v electric wire about 60' to an
outside building. I want to use cat5 for the phone. If I put the cat5 in
conduit and bury it in the same trench as 240 electric, will I get
interference on the phone even if the electric wire is touching the
conduit? Could I bury that cat5 without the conduit and expect it to
last a few years. Or how about putting both electric and phone in the
same conduit?
 
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=?ISO-8859-1?Q?R=F4g=EAr?=
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      06-21-2007
L.D. wrote:
> I need to run a phone wire and a 220v electric wire about 60' to an
> outside building. I want to use cat5 for the phone. If I put the cat5 in
> conduit and bury it in the same trench as 240 electric, will I get
> interference on the phone even if the electric wire is touching the
> conduit? Could I bury that cat5 without the conduit and expect it to
> last a few years. Or how about putting both electric and phone in the
> same conduit?


You do run the risk of interference, but the only way to know for sure
is to try it. However, I bought a spool of direct burial cat5E, never
had a problem with just cutting a slit in the ground and shoving it down
into it.
 
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McWideGlide
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      06-21-2007

"Rôgêr" <> wrote in message
news: om...
> L.D. wrote:
>> I need to run a phone wire and a 220v electric wire about 60' to an
>> outside building. I want to use cat5 for the phone. If I put the cat5 in
>> conduit and bury it in the same trench as 240 electric, will I get
>> interference on the phone even if the electric wire is touching the
>> conduit? Could I bury that cat5 without the conduit and expect it to last
>> a few years. Or how about putting both electric and phone in the same
>> conduit?

>
> You do run the risk of interference, but the only way to know for sure is
> to try it. However, I bought a spool of direct burial cat5E, never had a
> problem with just cutting a slit in the ground and shoving it down into
> it.


If you really are worried about interference, run the electrics in a rigid
steel conduit and attach a grounding bushing on one end with a ground wire
to your power source. Yes the conduit will ground itself but the copper
ground wire will bleed off any magnetic interference.I would run the cat 5
in a 3/4 inch pvc conduit. very cheap and you can repull instead of re dig
if something goes wrong. the utility companies run conduits in the same
trench all the time without problems. All in plastic. there is a minimum
separation only to the gas supply.


 
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JANA
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      06-21-2007
By standard, electric wire is supposed to be run in its own metal conduit
with proper grounding of the conduit, and the ground conductor of the wire.
Signal wire, such as network, audio, telephone, and video, are supposed to
be run in their own conduit with no electric wires along with them.

In practice, depending on the amount of current that will be going through
the electric wire, you can sometimes get away without using the proper
procedures.

--

JANA
_____


"L.D." <> wrote in message
news:Bslei.2610$ t...
I need to run a phone wire and a 220v electric wire about 60' to an
outside building. I want to use cat5 for the phone. If I put the cat5 in
conduit and bury it in the same trench as 240 electric, will I get
interference on the phone even if the electric wire is touching the
conduit? Could I bury that cat5 without the conduit and expect it to
last a few years. Or how about putting both electric and phone in the
same conduit?


 
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Mara
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      06-21-2007
On Wed, 20 Jun 2007 22:39:06 -0400, Rôgêr <> wrote:

>L.D. wrote:
>> I need to run a phone wire and a 220v electric wire about 60' to an
>> outside building. I want to use cat5 for the phone. If I put the cat5 in
>> conduit and bury it in the same trench as 240 electric, will I get
>> interference on the phone even if the electric wire is touching the
>> conduit? Could I bury that cat5 without the conduit and expect it to
>> last a few years. Or how about putting both electric and phone in the
>> same conduit?

>
>You do run the risk of interference, but the only way to know for sure
>is to try it. However, I bought a spool of direct burial cat5E, never
>had a problem with just cutting a slit in the ground and shoving it down
>into it.


How did you make the slit, and how deep did you bury the cable?

--
<wilhelm> "Idiot prices fell today with the expected announcement
from the Fed that there would be no shortage of idiots for the
foreseeable future."
 
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The Old Sourdough
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      06-21-2007
On 2007-06-21, in 24hoursupport.helpdesk, Mara waxed eloquently:
> On Wed, 20 Jun 2007 22:39:06 -0400, Rôgêr <> wrote:


snip

>>
>>You do run the risk of interference, but the only way to know for sure
>>is to try it. However, I bought a spool of direct burial cat5E, never
>>had a problem with just cutting a slit in the ground and shoving it down
>>into it.

>
> How did you make the slit, and how deep did you bury the cable?
>


He claims that people call him "Tripod", so just use your imagination...



--
The Old Sourdough
When I sell liquor, it's called bootlegging; when my patrons serve
it on silver trays on Lake Shore Drive, it's called hospitality.
-- Al Capone
 
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=?ISO-8859-1?Q?R=F4g=EAr?=
Guest
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      06-21-2007
Mara wrote:
> On Wed, 20 Jun 2007 22:39:06 -0400, Rôgêr <> wrote:
>
>
>>L.D. wrote:
>>
>>>I need to run a phone wire and a 220v electric wire about 60' to an
>>>outside building. I want to use cat5 for the phone. If I put the cat5 in
>>>conduit and bury it in the same trench as 240 electric, will I get
>>>interference on the phone even if the electric wire is touching the
>>>conduit? Could I bury that cat5 without the conduit and expect it to
>>>last a few years. Or how about putting both electric and phone in the
>>>same conduit?

>>
>>You do run the risk of interference, but the only way to know for sure
>>is to try it. However, I bought a spool of direct burial cat5E, never
>>had a problem with just cutting a slit in the ground and shoving it down
>>into it.

>
>
> How did you make the slit, and how deep did you bury the cable?
>

I have a flat blade shovel with a squared off business end, just used my
foot to push it into the ground a few inches. Probably abour 4" deep.
One time I was putting in one of those "invisible" dog fences and the
ground was so hard and dry that a shovel wouldn't even dent it. So I
reversed the blade on a circular saw and literally sawed a slot in the
ground.
 
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Mara
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      06-22-2007
On Thu, 21 Jun 2007 07:51:18 -0500, The Old Sourdough <> wrote:

>On 2007-06-21, in 24hoursupport.helpdesk, Mara waxed eloquently:
>> On Wed, 20 Jun 2007 22:39:06 -0400, Rôgêr <> wrote:

>
>snip
>
>>>
>>>You do run the risk of interference, but the only way to know for sure
>>>is to try it. However, I bought a spool of direct burial cat5E, never
>>>had a problem with just cutting a slit in the ground and shoving it down
>>>into it.

>>
>> How did you make the slit, and how deep did you bury the cable?
>>

>
>He claims that people call him "Tripod", so just use your imagination...
>
>


Oh, gee, thanks. Now I've got this image of him with a tree branch coming out of
his butt.

--
<wilhelm> "Idiot prices fell today with the expected announcement
from the Fed that there would be no shortage of idiots for the
foreseeable future."
 
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=?ISO-8859-1?Q?R=F4g=EAr?=
Guest
Posts: n/a
 
      06-22-2007
Mara wrote:
> On Thu, 21 Jun 2007 07:51:18 -0500, The Old Sourdough <> wrote:


>>He claims that people call him "Tripod", so just use your imagination...
>>
>>

>
>
> Oh, gee, thanks. Now I've got this image of him with a tree branch coming out of
> his butt.


That must have been what gangle was talking about. I thought it was a
sparerib.
 
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Oldus Fartus
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      06-22-2007
L.D. wrote:
> I need to run a phone wire and a 220v electric wire about 60' to an
> outside building. I want to use cat5 for the phone. If I put the cat5 in
> conduit and bury it in the same trench as 240 electric, will I get
> interference on the phone even if the electric wire is touching the
> conduit? Could I bury that cat5 without the conduit and expect it to
> last a few years. Or how about putting both electric and phone in the
> same conduit?


Jana is quite correct in the previous posting. In many jurisdictions
electrical cable and networking/telephone cabling should not be run in
the same conduit, and in fact are normally required to be about a foot
apart (30cm).

--
Cheers
Oldus Fartus
 
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