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 Maximum number of electrical wires in PVC conduits

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TSbeLIEve
post Aug 2 2017, 11:28 PM, updated 9y ago

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Hello World!

Has anyone tried inserting/pulling 12 or more 4mm^2 wires in a 1 inch PVC conduit? Any difficulty through the elbows?

According to US NEC (one of the many sites : https://www.vikingelectric.com/c/BusinessPa...onduit_Fil_VES) , it's allowable to put up to 8x 10 AWG wires in a 3/4 inch PVC conduit. A 4mm^2 is slightly smaller than 11 AWG and 3/4 inch US is around 1 inch Malaysia measurements.

Thanks in advance.

This post has been edited by beLIEve: Aug 3 2017, 12:07 AM
TSbeLIEve
post Aug 3 2017, 04:02 AM

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Tested with 8x4mm2 + 4x2.5mm2. Managed to slide through the elbow with some difficulty. If I bend them to the shape of the elbow, slide in smoothly.
TSbeLIEve
post Aug 3 2017, 12:10 PM

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Thanks a lot, bro Richard. You've been a great help again.

This is much much better than what contractors told me - difficult to bend. That's why I had to ask here. I tried searching before I posted, but I all I got were US specs, not UK where we derive from.

I'll have to think of something better. The reason I could afford 1x1" conduit is because my aircond's copper pipe is blocking the space for more.

This post has been edited by beLIEve: Aug 3 2017, 12:23 PM
TSbeLIEve
post Aug 3 2017, 01:01 PM

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Thanks bro weikee.

Yes I thought of that. Just feel it'll be funny for a single floor apartment to have 2 boxes. Let me consider my options.

The reason I'm redoing the wiring is because (if you still remember the other thread I posted) 2 circuits already partially shorted. So I just assume the rest could happen any time and better to do the wiring one shot.
TSbeLIEve
post Aug 3 2017, 09:58 PM

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Bro Richard,

House started development in 1993. We bought subsale.

I sort of done all the hacking for this conduit already, so probably don't need to test these. Others, well, those are the shorted ones, so need to change. The rest would be new additional circuits. You know, if do new wiring, have to plan properly to avoid extending here and there in the future.

In short, there are 6 existing circuits. 2 shorted.

Thanks.

 

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