Quickly Fish Wire Through Conduit

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Running wire through long conduit can be a challenge. I need to run thin cable for my battery monitor through 55+ ft of conduit. I learned a trick to suck a string through the conduit with a shop vacuum and then use the string to pull the cable through.
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[@bavariabearfan]

When the conduit length is even longer. Try tieing a small piece of styrofoam to the end of the string. (a small round styrofoam fishing bobber works well) It help create more suction to offset the weight of the string. I have used this trick professionally for over 20 years to run cable. It is a tried and true method.

[@SumErgoMonstro]

When you pull the cable through, always also pull more string with the cable, and leave the string in the conduit with your cable. That way you have string to pull more cables later. (and if you need to use the string, tie more string to it with the cable you pull through that time, etc.)

[@SeattlePioneer]

A vacuum develops only limited force. Use an air compressor instead. You can then use a foam pig to plug up the line and put 100 PSI or whatever to force the pig through the line.

[@abdulelkhatib2674]

If you're having a hard time running the wire trough the conduit get some vaseline and put a generous glob on the conduit end and add more about every 6 ft. But be sure go wear gloves because it can get really messy real quick

[@dodiezresibemol]

saved my freakin day. i would give a beer to the one inventing this!

[@johnlynn3625]

I do this all the time, just did a 250 foot pull last week.

[@Enonymouse_]

If you have direct access to it, sometimes a magnet can pull a line with a steel tip on it too.

[@fredpierce6097]

Love that country fix! 😂

[@davekamal1711]

Hey Doc, what the hell is a trimetric meter????

[@sitedev]

I was almost expecting you to pull a rabbit out of the line at the end of the video. Now that would have been cool trick!

[@KREZSAMURAI]

I've been a master electrician for 23 years in Chicago.. We've been using this trick forever but with one catch.. just like some of your other commits mentioned., Put a couple pieces of cotton balls or a small piece of a plastic bag & tied to the end of the string. (Tough nylon string)

[@ricardos.215]

It's a good idea..

[@visitslovenija]

Brilliant! Spent ages trying to feed a line through - unsuccessfully. Then this idea did it in minutes. Thanks.

[@myheaven2626]

Oh man you save my life. I was worrying a lot on that issue because i had fix all my conduit inside the flooring. The issue i was having is that whilst i pull in the fisher inside and at certain moment the fisher got stuck and hard to pull.

[@smartass6071]

Thats a great idea, who a thunk it would be so simple. Thanks for the tip, you just saved a lot of DIY people a lot of time. You get a gold star. Thanks.

[@thomharrington7233]

Fabulous idea! I tried getting the pull wire through for about an hour. Frustrated I did a Google search and found this. 10 minutes later, I had my string pulle through and within 30 minutes my wire pulled. I was doing 1/2" conduit so I used the blower nozzle and duct taped a short piece of conduit to it.

[@ivansandywyatt9016]

really cool, thanks for taking the time to make the video.

[@chayanikabohra6722]

Amazing idea ... I pulled a 40 feet nylon rope with a Dyson v6. Vacuum was not strong at joint so I duck taped it.. had to put couple of knots at start of string to increase the weight . Thanks for the tip ...

[@dewan718]

Thank you soo much for this tip and making this video. You helped us save thousands of dollars by us not having to break the ground concrete and tons of headache.

[@metal441]

Yes! Thanks for this video. This is the most helpful “how to do a thing” video I’ve probably ever seen!