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Discuss TIPS? Running Neutral Wire in Old Conduit NYC Building approx 1950 in the Electrical Talk - All Other Countries area at ElectriciansForums.net

Hello!
I am setting up a smart home system and will need a neutral wire for the application. Some of the existing switches to be replaced only have 2 wires. I believe I will need to run my own neutral line through the existing conduit. I have done so before and just used a stiff wire with some grease. It was a pain. Any tips for this process?
 
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FatAlan

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Trainee
There are various rods and devices on the market for running cables but their effectiveness is very dependent on access and space in respect of the conduit. I’d also be very wary of the state of the existing wiring and whether it would be prone to damage by the process of threading another cable. You mention use of grease on a previous occasion. I take it that it was a grease that would not have a detrimental effect on the insulation of the cables?
I see that you are in the US. A local spark may be more familiar with you wiring systems. Good luck :)
 

David Prosser

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Arms
Esteemed
Don’t use washing up liquid.
It contains salt.

Ouch !! Always use a bit of fairy liquid when pulling through a long or tight duct run. WTF am I going to use now ?
Of course there is the question of how much damage does a small amount of washing up liquid do to the exterior of SWA or H7ORN. Especially when compared to the damage that could take place when being pulled dry. Lets be honest nobody wants that !
 
D

Deleted member 26818

If the duct or conduit is plastic, using washing up liquid is not a problem.
It’s metal conduit where it can increase corrosion that’s a problem.

It’s why we don’t recommend using washing up liquid for washing Motorcycles.
 

littlespark

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Arms
Esteemed
Advent Win
If at all possible, pull the existing cables out, pulling in a draw wire as it goes.... tie in your new cable and pull them all back.
You won’t get the cable on cable friction.

Or go with a smart product that doesn’t require a neutral.
 

Lucien Nunes

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Mentor
Arms
Esteemed
There are specific cable pulling lubricants like Ideal 77, that are designed to leave a dry non-corrosive residue after use that doesn't make the cables sticky in the future. I don't know about compatibility with older insulation materials that might be present in your existing wiring.
 
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If at all possible, pull the existing cables out, pulling in a draw wire as it goes.... tie in your new cable and pull them all back.
You won’t get the cable on cable friction.

Or go with a smart product that doesn’t require a neutral.
This actually sounds like a great idea. The building has thin metal conduit. This may be the path of least resistance (literally).
 
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Reply to TIPS? Running Neutral Wire in Old Conduit NYC Building approx 1950 in the Electrical Talk - All Other Countries area at ElectriciansForums.net

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