On 11 Jan 2004 02:01:55 -0800,
(Mike Hall) wrote:

2. In replacing the wiring to the light switches, I intend to use the
existing cable to pull through the new stuff, (it is in oval conduit).
Has anyone got any tips for how to mechanically connect the two
cables, obviously with the smallest possible cross section to enable
the joint to pass through the conduit. Is insulating tape generally
strong enough ??

If space in the conduit is limited (as it is bound to be) one option
would be to pull thru a length of curtain wire, and also a piece of
string (so that you've got the string and curtain wire in the
conduit), or perhaps pull the old cable out and pull some string thru
first, then pull thru the curtain wire AND further string.

Then you can put a hook in the end of the curtain wire to attach to
the new cable, and start pulling - without using the string.

The purpose of the string is that if the curtain wire becomes detached
from the new cable you can pull the curtain wire thru again on the
string.

Once you've got the new cable thru pull the string out because it
isn't needed any longer.

Make sure you use string which is strong though - none of this stuff
that spiders would reject for building their webs - if you can break
it by pulling between your hands it isn't strong enough.

You would also be well advised to dust the new cable with talcum
powder as it enters the conduit - this will greatly assist its passage
thru the conduit. However on completion it would probably be a good
idea to put the vacuum cleaner on the end of the conduit and give it a
good blow/suck to remove the "loose" talc - though it isn't likely to
be a big problem fine dust can be a fire hazard.

PoP

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