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Connection armoured calbe to twin and earth cable



 
 
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  #1  
Old February 28th 07, 04:10 PM posted to uk.d-i-y
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Default Connection armoured calbe to twin and earth cable

I understand how to terminate armoured cable in a metal box using a
gland kit, but what should one use to connect the tails to the twin and
earth cable in the metal box?


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  #2  
Old February 28th 07, 04:41 PM posted to uk.d-i-y
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Posts: 2,490
Default Connection armoured calbe to twin and earth cable

In an earlier contribution to this discussion,
Lawrence Zarb wrote:

I understand how to terminate armoured cable in a metal box using a
gland kit, but what should one use to connect the tails to the twin
and earth cable in the metal box?


Choc block of the appropriate size is fine, or you could crimp the joints.

Are you using one of the SWA cable's conductors as an earth, or using just
the armour for this? Either way, the armour needs to be connected to the
T&E's earth wire. the simplest way to achieve this is to use a piranha nut
on the gland, and attach a short fly-lead to it.
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Roger
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  #3  
Old February 28th 07, 06:06 PM posted to uk.d-i-y
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Posts: 6
Default Connection armoured calbe to twin and earth cable

You should run an extra earth wire outside the cable and connect that to the
box also.

"Roger Mills" wrote in message
...
In an earlier contribution to this discussion,
Lawrence Zarb wrote:

I understand how to terminate armoured cable in a metal box using a
gland kit, but what should one use to connect the tails to the twin
and earth cable in the metal box?


Choc block of the appropriate size is fine, or you could crimp the joints.

Are you using one of the SWA cable's conductors as an earth, or using just
the armour for this? Either way, the armour needs to be connected to the
T&E's earth wire. the simplest way to achieve this is to use a piranha nut
on the gland, and attach a short fly-lead to it.
--
Cheers,
Roger
______
Email address maintained for newsgroup use only, and not regularly
monitored.. Messages sent to it may not be read for several weeks.
PLEASE REPLY TO NEWSGROUP!



  #4  
Old February 28th 07, 06:52 PM posted to uk.d-i-y
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Posts: 2,490
Default Connection armoured calbe to twin and earth cable

In an earlier contribution to this discussion,
Innumerical wrote:

You should run an extra earth wire outside the cable and connect that
to the box also.


Why?
--
Cheers,
Roger
______
Email address maintained for newsgroup use only, and not regularly
monitored.. Messages sent to it may not be read for several weeks.
PLEASE REPLY TO NEWSGROUP!


  #5  
Old March 1st 07, 01:26 AM posted to uk.d-i-y
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Posts: 433
Default Connection armoured calbe to twin and earth cable

On Wed, 28 Feb 2007 18:06:53 GMT, "Innumerical"
mused:

You should run an extra earth wire outside the cable and connect that to the
box also.

No you shouldn't. If the cable were below ground then you'd have to
run the earth in something to mechanically protect it, which negates
the need for the SWA as you may as well run it all in that then.

If you want to run a seperate earth the preferred method is to use a 3
core armoured for single phase supplies.
--
Regards,
Stuart.
  #6  
Old March 1st 07, 09:45 AM posted to uk.d-i-y
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Posts: 3,357
Default Connection armoured calbe to twin and earth cable

On Wed, 28 Feb 2007 18:06:53 GMT someone who may be "Innumerical"
wrote this:-

You should run an extra earth wire outside the cable and connect that to the
box also.


Why?

The armour of SWA cable is perfectly adequate as a protective
conductor, if terminated properly and then looked after. The
energised conductors are connected via a terminal strip as is the
protective conductor. The metal box should also be properly
connected to the protective conductor.

Should one wish to run the protective conductor inside the armour
and some more insulation this can be done using a three core cable.
However, the armour and box must be connected to the protective
conductor too.


--
David Hansen, Edinburgh
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