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Old 10-25-2014, 11:26 PM   #1
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Underground cable from house 65 feet to drywell pump


Hi,

Just ran a 4 inch pvc drain line from the house (water softner and iron filter regen drain line)to a newly installed drywell. Live in alberta. Would like to run 14awg 2 conductor nmwdu cable to drywell pumpout. The pvc line is 12 inches down at the beginning and ends up 5 ft down at the drywell. Can i run a cable with the pipe and cover it with planking and survey tape? Will have gfci at drywell.

Thanks

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Old 10-26-2014, 12:43 AM   #2
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Underground cable from house 65 feet to drywell pump


Personally I would go with 12/2 or 10/2 just to have some wiggle room.

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Old 10-26-2014, 07:43 AM   #3
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Underground cable from house 65 feet to drywell pump


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Originally Posted by Zedde View Post
Hi,

Just ran a 4 inch pvc drain line from the house (water softner and iron filter regen drain line)to a newly installed drywell. Live in alberta. Would like to run 14awg 2 conductor nmwdu cable to drywell pumpout. The pvc line is 12 inches down at the beginning and ends up 5 ft down at the drywell. Can i run a cable with the pipe and cover it with planking and survey tape? Will have gfci at drywell.

Thanks
If your trench is only 12 inches deep, you need to have that wire GFCI protected at the source.
Rigid metal pipe 6", PVC 18", direct burial 24", GFCI 12"
Also you will need to use wire rated for burial, which is UF cable (the grey stuff).
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Old 10-26-2014, 07:55 AM   #4
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Underground cable from house 65 feet to drywell pump


The OP is in Canada.
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Old 10-26-2014, 08:00 AM   #5
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Underground cable from house 65 feet to drywell pump


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The OP is in Canada.
My reading comprehension is what drove to a career involving math.
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Old 10-26-2014, 08:57 AM   #6
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Underground cable from house 65 feet to drywell pump


The poster is in Canada, nmwdu is their UF. Not sure of the burial depths or GFCI requirement.
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Old 10-26-2014, 10:06 AM   #7
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Underground cable from house 65 feet to drywell pump


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Old 10-26-2014, 10:32 AM   #8
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Underground cable from house 65 feet to drywell pump


from ESA site.
Quote:
Question
What does the Ontario Electrical Safety Code require when burying a non metallic sheathed cable supplying a shed, a detached garage, a post mounted receptacle, a 120 volt light fixture in my yard, or similar things?
Answer

The Code requires non metallic sheathed cable (NMWU) to be buried at least 600 mm (24") below non-vehicular areas and 900 mm (36") below vehicular areas. An example of a vehicular area is a laneway, an example of a non-vehicular area is a lawn.

The Code permits these depths to be reduced by 150 mm (6") where mechanical protection is placed in the trench above the cable.

Direct buried conductors (NMWU) shall be installed so that they run adjacent to each other and do not cross over each other and with a layer of screened sand with a maximum particle size of 4.75 mm or screened earth at least 75 mm deep both above and below the conductors.

A suitable electrical warning marker tape shall be buried along and above the cable route and be located approximately halfway between the cable and finished grade.

Where mechanical protection is used for reduced depth, it shall consist of one of the following and, when in flat form, shall be wide enough to extend at least 50 mm beyond the conductor, cables, or raceways on each side:

(a) Treated planking at least 38 mm thick; or

(b) Poured concrete at least 50 mm thick; or

(c) Concrete slabs at least 50 mm thick; or

(d) Concrete encasement at least 50 mm thick; or

(e) Other suitable material.

Rule 12-012.
Quote:
Question
I am having a buried cable installed to my detached garage. Can the cable be buried in the same trench as the gas pipe supplying the garage?
Answer

Yes, they are permitted to be buried in the same trench.

Where possible, electrical wiring and other services that parallel each other in the trench shall not be installed in the same vertical plane and shall be separated horizontally by a minimum of 300 mm within the trench.

Where electrical wiring and other service cross over each other, they shall be separated vertically by a minimum 300 mm at the point of crossing.

Note the marking requirement for buried electrical wiring contained in the subject 12-33-26 “Buried wiring guidelines”.

Rule 12-012, CSA C22.3 No. 7, Underground Systems.

Ontario Electrical Safety Code 25th Edition/2012
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Old 10-26-2014, 12:14 PM   #9
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Underground cable from house 65 feet to drywell pump


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Originally Posted by Mshow1323 View Post
If your trench is only 12 inches deep, you need to have that wire GFCI protected
120v only, 240v a no go.

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Old 10-26-2014, 12:17 PM   #10
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Underground cable from house 65 feet to drywell pump


Good stuff. Thank you joed

Wouldn't want to have to wire in canada or chicago

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