Electric and Water

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Electric and Water

Postby iammike » Mon Dec 29, 2014 6:23 pm

Can Electric Cable and Water piping be buried together in the same trench ?

And if not what is a safe distance between them ?

Thanks
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Re: Electric and Water

Postby pattayapope » Tue Dec 30, 2014 7:39 am

For a domestic application I see no issues and distance has no factor, the main thing is you use the corect type of electrical cable which is suitable for direct burial and if you can intall this in a conduit better. Typically HDPE pipe with a blue stripe mean water and with a red stripe means electrical. You should also make sure you know the route for any future excavation in the area.
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Re: Electric and Water

Postby iammike » Tue Dec 30, 2014 10:08 am

Perfect.

Another question, what do you mean, by install it in a conduit, do you mean that even when you have the correct electric cable for burial you still need to put in a conduit ? Isn't that double ?

Thanks, much appreciated.




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Re: Electric and Water

Postby Shastadad » Tue Dec 30, 2014 10:47 am

Yes, the electrical cable should be placed into an appropriate sized conduit, like the one shown here, even if buried under cement. The purpose of a conduit is to protect the expensive electrical cable, so it is not "double" the work but is the correct way to do it

conduit.png
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Re: Electric and Water

Postby iammike » Tue Dec 30, 2014 11:11 am

Thanks.

I have never seen them do it that way, standard what I have seen is that the Electric cable goes (without a conduit) directly under ground.

Thanks again.
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Re: Electric and Water

Postby pattayapope » Tue Dec 30, 2014 12:11 pm

For domestic underground cable NYY cable is used (double insulated) but for industrial use amoured cable is generally used. You can install without the PVC conduit but the conduit serves to give extra mechanical protection, keep water from contacting the cable (provided it is continous and sealed at both ends) and allows easy replacment if you have any problems in the future.
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Re: Electric and Water

Postby iammike » Tue Dec 30, 2014 12:32 pm

It is for domestic use, the cable run will be around 350 meters and for the water I will not use the blue piping, but HDPE8.

Hypothetical Question:

I don't think it's an option to leave the Electric Cable (without conduit) above ground ? Or ? The reason why I think this, is because that the cable will IMHO degenerate more quickly above ground then below, or am I wrong in thinking this?


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Re: Electric and Water

Postby olavhome » Tue Dec 30, 2014 1:12 pm

Get a conduit and bury it. Guess you will use it for many years to come so then its a small investment :)
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Re: Electric and Water

Postby pattayapope » Tue Dec 30, 2014 3:57 pm

350 meters is a very long run and depending on your load you could require some very heavy gauge cables to overcome the volt drop. Pulling 350 meters of cable thru either conduit or HDPE pipe could prove to be difficult, running it above ground on poles although not very nice looking might be a much cheaper alternative. Most power cable is deigned to be exposed to sunlight and should not detriorate over time, it is used extensively in Thailand and I have never seen it being replaced periodicly. If theft is a concern then buried it is the best choice however.
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Re: Electric and Water

Postby iammike » Tue Dec 30, 2014 4:16 pm

The max. load will be around 1000 (and abs max) 2000W (as I will attach garden lights to it on the perimeter wall and I heard that for that I need 4mm2 cable for this. I just looked at my local HomePro, and there was 2 kinds of cable for this

white cable 4mm2 at +/- 60 THB per meter and another black one at around 14 THB per meter. (I still don''t understand why the huge price difference) (both according to the sales men had to be put in a Conduit)

As for conduit's they only have the Yellow Pipes (125THB per 4 meter) so I have to look somewhere else for the other type.

Please note: I am just gathering info (will not attempt to install anything and I will of course consult with my Electrician !
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Re: Electric and Water

Postby Roger Ramjet » Tue Dec 30, 2014 7:26 pm

iammike wrote:Please note: I am just gathering info (will not attempt to install anything and I will of course consult with my Electrician !

You need to go to a specialist electrical shop (normally a mum and pop store). They will have everything you need and be able to advise on what you require. Be warned they only deal in cash and they are not cheap.
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Re: Electric and Water

Postby iammike » Tue Dec 30, 2014 7:48 pm

Roger Ramjet wrote:
iammike wrote:Please note: I am just gathering info (will not attempt to install anything and I will of course consult with my Electrician !

You need to go to a specialist electrical shop (normally a mum and pop store). They will have everything you need and be able to advise on what you require. Be warned they only deal in cash and they are not cheap.


I will not be dealing with them regarding this, I will let my Electrician do that. But I just wanna come prepared when talking with my electrician and that's why I came here.
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Re: Electric and Water

Postby Sometimewoodworker » Wed Dec 31, 2014 8:30 am

iammike wrote:The max. load will be around 1000 (and abs max) 2000W (as I will attach garden lights to it on the perimeter wall and I heard that for that I need 4mm2 cable for this. I just looked at my local HomePro, and there was 2 kinds of cable for this

white cable 4mm2 at +/- 60 THB per meter and another black one at around 14 THB per meter. (I still don''t understand why the huge price difference) (both according to the sales men had to be put in a Conduit)

As for conduit's they only have the Yellow Pipes (125THB per 4 meter) so I have to look somewhere else for the other type.
!


You' maybe looking in the wrong place or asking for the wrong thing.

AFIR I've not seen it in HP but have in GH, TH, & DH


image.jpg

image.jpg
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Re: Electric and Water

Postby iammike » Wed Dec 31, 2014 10:19 am

You' maybe looking in the wrong place or asking for the wrong thing.

AFIR I've not seen it in HP but have in GH, TH, & DH



Thanks, I have only been looking (don't have the time yet) in my Local HomePro (Pattaya) and they only had the Yellow Piping (I specifically asked for HDPE piping (I even specified the one with red stripe) and the response was "Mai Mee". :D

I will go after New years, to the Global House, Thai Watsadu, RuangSangThai (Buriram) and maybe even to the Mom and Pops stores to check. But will let my Electrician do the buying (with enough cash in hand :wink: )
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Re: Electric and Water

Postby Sometimewoodworker » Wed Dec 31, 2014 10:52 am

iammike wrote:
You' maybe looking in the wrong place or asking for the wrong thing.

AFIR I've not seen it in HP but have in GH, TH, & DH



Thanks, I have only been looking (don't have the time yet) in my Local HomePro (Pattaya) and they only had the Yellow Piping (I specifically asked for HDPE piping (I even specified the one with red stripe) and the response was "Mai Mee". :D

I will go after New years, to the Global House, Thai Watsadu, RuangSangThai (Buriram) and maybe even to the Mom and Pops stores to check. But will let my Electrician do the buying (with enough cash in hand :wink: )

HDPE piping is not so available, LDPE piping is everywhere.
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