Hire the best Electrician

grey hd conduit underground

Results 1 to 11 of 11
  1. #1
    Newbie
    Join Date
    Sep 2014
    Location
    qld
    Posts
    3

    Default grey hd conduit underground

    Looking at putting a couple of conduits over to the shed incase I ever want power, I know about the depth requirement, laying of danger tape ect. Just wondering if I could lay grey hd or if it has to be orange ( have 32mm grey hd so would not have to purchase more)
    thanks

  2. #2
    Community Moderator
    Join Date
    Dec 2008
    Location
    Queensland
    Posts
    7,413

    Default

    Well the problem comes when you want to have power installed in the shed. You would have to find an electrician to do the job not knowing what is under the ground, how deep or weather it has marking tape.
    I would suggest you get the power on the shed when you dig the trench.
    As for grey HD conduit I didn't know it existed but I have been wrong before.

  3. #3
    Senior Member
    Join Date
    Nov 2012
    Location
    NSW
    Posts
    258

    Default grey hd conduit underground

    Grey hd? Are you sure it's not md?

    Orange is hd, and is used underground. Grey is used above ground because orange has no uv resistance.

  4. #4
    Newbie
    Join Date
    Sep 2014
    Location
    qld
    Posts
    3

    Default

    I see where you coming from when it is all buried . The grey hd was used for the solar installation, specifically because I was told it is uv rated (T) so sparky didn't need to bother carrying orange hd for inside building and grey md for outside.

  5. #5
    Golden Member
    Join Date
    May 2013
    Location
    QLD
    Posts
    751

    Default

    Quote Originally Posted by arnold View Post
    I see where you coming from when it is all buried . The grey hd was used for the solar installation, specifically because I was told it is uv rated (T) so sparky didn't need to bother carrying orange hd for inside building and grey md for outside.
    grey is md. orange is hd. orange has no uv resistance and cant be used out of the ground. Why anyone would use it in a roof cavity situation i dont know because it costs more than grey. It has no use anywhere else.

    buy orange. you dont have a choice

  6. #6
    Newbie
    Join Date
    Sep 2014
    Location
    qld
    Posts
    3

    Default

    Quote Originally Posted by Brian7886 View Post
    grey is md. orange is hd. orange has no uv resistance and cant be used out of the ground. Why anyone would use it in a roof cavity situation i dont know because it costs more than grey. It has no use anywhere else.

    buy orange. you dont have a choice
    Solar dc cabling is required to be run within buildings in hd conduit, in the roof and wall cavities, they even do hd grey corro I'm told. Anyway had somone come take a look who is happy to use the grey hd (didn't know it existed either) prolly won't save me much tho

  7. #7
    Community Moderator phild01's Avatar
    Join Date
    Aug 2009
    Location
    Sydney, north
    Posts
    15,956

    Default

    Is it normally orange so quick identification, in case someone accidentally digs it up!

  8. #8
    Community Moderator
    Join Date
    Dec 2008
    Location
    Queensland
    Posts
    7,413

    Default

    Quote Originally Posted by phild01 View Post
    Is it normally orange so quick identification, in case someone accidentally digs it up!
    Don't know the history behind the colours. Normally grey and orange are electrical and white is comms but water and sewer are also white. And to complicate things LD corrugated conduit is almost white.

  9. #9
    1K Club Member
    Join Date
    Apr 2013
    Location
    Melbourne
    Posts
    1,022

    Default

    Quote Originally Posted by Whitey180 View Post
    Grey hd? Are you sure it's not md?

    Orange is hd, and is used underground. Grey is used above ground because orange has no uv resistance.
    Also, Brian7886 said:

    "grey is md. orange is hd. orange has no uv resistance and cant be used out of the ground."

    However, according to Welcome to Iplex Pipelines Australia Pty Limited

    PVC-U Electrical Conduit is available (from them) as Heavy Duty conduit in Orange (with thicker "walls") and Medium Duty conduit in Grey.

    Hence, Heavy Duty PVC conduit is available in Orange (and, because it is PVC) may be UV resistant (?)

    HDPE (High-density Polyethylene) Conduit (for underground installation) is available (from Iplex) (only) in Orange


    The original poster (arnold) said
    "The grey hd was used for the solar installation, specifically because I was told it is uv rated (T) so sparky didn't need to bother carrying orange hd for inside building and grey md for outside."

    Hence, it appears that some Grey HD PVC Conduit may be manufactured, but I have not yet found a reference to that manufacturer. Perhaps arnold could advise.


    Also, see http://www.esv.vic.gov.au/Portals/0/...ust%202012.pdf
    where, among other things, it is stated:
    The solar array to inverter solar DC cables within buildings has to be in heavy duty plastic conduit. (Clause 4.3.6.3)
    All outdoor equipment must be suitable for the environment and be at least IP 54 and UV resistant. (Clause 4.3.3.1)

    Nevertheless, arnold can't use his Grey HD (PVC ?) conduit underground, since such conduit must be Orange - and conduit is quite cheap, especially when compared with the effort of installing it below ground!

  10. #10
    Senior Member
    Join Date
    Nov 2012
    Location
    NSW
    Posts
    258

    Default grey hd conduit underground

    Lol, it's conduit, and cheap. It doesn't have to be confusing. Use grey above ground and orange below buy it from a reputable wholesaler. Done. Next job.

  11. #11
    Golden Member
    Join Date
    May 2013
    Location
    QLD
    Posts
    751

    Default

    Quote Originally Posted by Whitey180 View Post
    Lol, it's conduit, and cheap. It doesn't have to be confusing. Use grey above ground and orange below buy it from a reputable wholesaler. Done. Next job.

    pretty much i buy orange for underground, grey for anything else. Its cheap, but if you have to start adding fittings like bends or whatever it can get dearer and dearer depending on size.

Similar Threads

  1. Underground conduit for automatic sliding gate
    By Renomaster in forum Electrical
    Replies: 12
    Last Post: 30th Dec 2013, 09:00 PM
  2. What type of conduit for underground power
    By wineman71 in forum Electrical
    Replies: 8
    Last Post: 19th Jun 2012, 09:47 AM
  3. Underground Conduit through slab
    By el_caro in forum Electrical
    Replies: 8
    Last Post: 4th Dec 2011, 07:09 PM
  4. Finding Underground Electrical Conduit
    By TimberGetter in forum Electrical
    Replies: 16
    Last Post: 18th Nov 2011, 03:05 PM
  5. Underground electrical conduit how deep
    By chrise in forum Electrical
    Replies: 6
    Last Post: 21st Sep 2010, 06:27 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •