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Ebay Cable

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24

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    #32
    [Deleted User]
    Posts: 5,238 ✭✭✭ [Deleted User]


    Let me direct the thread back to the original question Gentlemen because I've a bee in my bonnet!

    "What would you do?"


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    #33
    Bruthal
    Closed Accounts Posts: 13,422 ✭✭✭✭Bruthal


    Sir Liamalot wrote: »
    CSA = pi * (radius x 2)

    Not radius x 2, radius x radius


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    #34
    [Deleted User]
    Posts: 5,238 ✭✭✭ [Deleted User]


    Oh bottom!...:o


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    #35
    [Deleted User]
    Posts: 5,238 ✭✭✭ [Deleted User]


    OK 25mm² Ebay jank is 24mm² not accounting for the air inside and smaller than my electrical wholesaler 25mm² and resistance checking as 16mm²


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    #36
    2011
    Moderators, Home & Garden Moderators, Technology & Internet Moderators, Regional East Moderators Posts: 12,596 Mod ✭✭✭✭2011


    Sir Liamalot wrote: »
    "What would you do?"

    Suggestion #1 is in my first post on this thread: Parallel conductor + avoid Ebay for cable.

    Suggestion #2 is in my last post on this thread: Start again. No paralleling, go with tri rated panel flex from a reputable source. This is available in red and will work up to 105 DegC which exceeds your requirements.


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    #37
    Bruthal
    Closed Accounts Posts: 13,422 ✭✭✭✭Bruthal


    Sir Liamalot wrote: »
    OK 25mm² Ebay jank is 24mm² not accounting for the air inside and smaller than my electrical wholesaler 25mm² and resistance checking as 16mm²

    I presume you checked resistance of length of confirmed 25² too.


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    #38
    Loozer
    Closed Accounts Posts: 168 ✭✭Loozer


    Sir Liamalot wrote: »
    Did I mention fitters are installing this shyte in ambulances and fire service vehicles?...Sure they're probably overspec-ed until the cows come home...doesn't make it right.

    They're buying the cable off eBay?


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    #39
    [Deleted User]
    Posts: 5,238 ✭✭✭ [Deleted User]


    2011 wrote: »
    Suggestion #1 is in my first post on this thread: Parallel conductor + avoid Ebay for cable.

    Suggestion #2 is in my last post on this thread: Start again. No paralleling, go with tri rated panel flex from a reputable source. This is available in red and will work up to 105 DegC which exceeds your requirements.


    And just let the suppliers away with it?

    Bruthal wrote: »
    I presume you checked resistance of length of confirmed 25² too.

    Nope. Notice only one side of that fuse holder melted!
    There's no way I can get Elandflex in the wrong sized lug.


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    #40
    2011
    Moderators, Home & Garden Moderators, Technology & Internet Moderators, Regional East Moderators Posts: 12,596 Mod ✭✭✭✭2011


    Just to add:
    Fine stranded cables such as those pictured take different (smaller) lug sizes that cables with "standard" heavier strands. It is best to use lugs that are specifically designed for fine strands so as to ensure a proper fit and descent connection.

    It is normal to find that a 25 mm lug will fit snugly onto a 25mm sq. cable but will be too large on a 25 mm sq. fine stranded panel flex type cable. The smaller strands result in a smaller overall diameter conductor.


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    #41
    Bruthal
    Closed Accounts Posts: 13,422 ✭✭✭✭Bruthal


    Sir Liamalot wrote: »
    And just let the suppliers away with it?





    Voltage drop tested 1m @ 150A with Fluke 87V

    Yes i was actually posting to test 10 meters with 100 amps and volt drop but didnt post it.


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    #42
    [Deleted User]
    Posts: 5,238 ✭✭✭ [Deleted User]


    Loozer wrote: »
    They're buying the cable off eBay?


    Seller's claimed technical rebuttal.


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    #43
    2011
    Moderators, Home & Garden Moderators, Technology & Internet Moderators, Regional East Moderators Posts: 12,596 Mod ✭✭✭✭2011


    Sir Liamalot wrote: »
    And just let the suppliers away with it?

    I didn't comment on that. There is nothing to stop you pursuing a refund in parallel with finishing the project for your customer.

    However I think you are unlikely to win regardless of where the blame lies.


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    #44
    Loozer
    Closed Accounts Posts: 168 ✭✭Loozer


    Sir Liamalot wrote: »
    Seller's claimed technical rebuttal.

    You mean they said it?


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    #45
    [Deleted User]
    Posts: 5,238 ✭✭✭ [Deleted User]


    Bruthal wrote: »
    Yes i was actually posting to test 10 meters with 100 amps and volt drop but didnt post it.


    Post self-destructed.

    I haven't tested the good stuff, I chopped up all my stock trying to figure out why the fuse-holders were self-combusting under rated load ("500A").

    Loozer wrote: »
    You mean they said it?

    Yes. "Thousands of meters a month."


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    #46
    Loozer
    Closed Accounts Posts: 168 ✭✭Loozer


    I wired up a load of.houses one time with bad bell wire

    Wouldn't.fire up the chimes and the resistance was high

    Lesson learned even though I had bought it from a wholesaler


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    #47
    Loozer
    Closed Accounts Posts: 168 ✭✭Loozer


    There was a scandal too with the T+E about 10-15 years ago, bad cable I think sourced by reputable ?wholesalers through turkey


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    #48
    Bruthal
    Closed Accounts Posts: 13,422 ✭✭✭✭Bruthal


    Loozer wrote: »
    There was a scandal too with the T+E about 10-15 years ago, bad cable I think sourced by reputable ?wholesalers through turkey

    Yes there was. Price of copper causing a bit of shaving of sizes.


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    #49
    Loozer
    Closed Accounts Posts: 168 ✭✭Loozer


    Bruthal wrote: »
    Yes there was. Price of copper causing a bit of shaving of sizes.

    I thought it was the purity of the copper , can't remember exactly

    Wholesalers are not immune from it, the more established and reputable are less risky to buy from


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    #50
    2011
    Moderators, Home & Garden Moderators, Technology & Internet Moderators, Regional East Moderators Posts: 12,596 Mod ✭✭✭✭2011


    Loozer wrote: »
    I thought it was the purity of the copper , can't remember exactly

    That’s how I remember it. I referred to this in an earlier post.
    Wholesalers are not immune from it, the more established and reputable are less risky to buy from

    Not immune but you have recourse if it goes pear shaped.


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    #51
    Bruthal
    Closed Accounts Posts: 13,422 ✭✭✭✭Bruthal


    What result did the 1 meter of 25 cable give with 150 amps on it?
    10 meters would obviously be better.


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    #52
    Bruthal
    Closed Accounts Posts: 13,422 ✭✭✭✭Bruthal


    Loozer wrote: »
    I thought it was the purity of the copper , can't remember exactly

    Wholesalers are not immune from it, the more established and reputable are less risky to buy from

    Maybe so, just thought I remember a question over sizes before.


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    #53
    Loozer
    Closed Accounts Posts: 168 ✭✭Loozer


    2011 wrote: »
    That’s how I remember it. I referred to this in an earlier post.



    Not immune but you have recourse if it goes pear shaped.

    The only recourse RECs ever had was replacement

    I'm thinking back to the issue with neozed switch fuses where all you got was a replacement switch for your time

    Was any REC ever compensated for his time ripping out cabling or switchgear?


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    #54
    [Deleted User]
    Posts: 5,238 ✭✭✭ [Deleted User]


    Bruthal wrote: »
    What result did the 1 meter of 25 cable give with 150 amps on it?
    10 meters would obviously be better.


    1.1mΩ


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    #55
    2011
    Moderators, Home & Garden Moderators, Technology & Internet Moderators, Regional East Moderators Posts: 12,596 Mod ✭✭✭✭2011


    Loozer wrote: »
    The only recourse RECs ever had was replacement

    You are missing the point.
    There are two costs:
    1) Materials
    2) Time

    It is far easier to get a wholesaler to replace substandard cable FOC than someone on EBay. Regarding the cost in time, RECs generally have to take the hit (which is unfair). However it is not as bad as having to pay for the materials too.


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    #56
    [Deleted User]
    Posts: 5,238 ✭✭✭ [Deleted User]


    ..or burning down people's vehicles...because they won't blame the Ebay seller.


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    #57
    Bruthal
    Closed Accounts Posts: 13,422 ✭✭✭✭Bruthal


    Sir Liamalot wrote: »
    1.1mΩ
    0.165v drop on the meter of cable with 0.103v expected?


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    #58
    Loozer
    Closed Accounts Posts: 168 ✭✭Loozer


    2011 wrote: »
    You are missing the point.
    There are two costs:
    1) Materials
    2) Time

    It is far easier to get a wholesaler to replace substandard cable FOC than someone on EBay. Regarding the cost in time, RECs generally have to take the hit (which is unfair). However it is not as bad as having to pay for the materials too.

    The minimum recourse which was my point

    Wouldn't like to be one of the RECs who had to rip all the cabling out of a job


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    #59
    2011
    Moderators, Home & Garden Moderators, Technology & Internet Moderators, Regional East Moderators Posts: 12,596 Mod ✭✭✭✭2011


    Bruthal wrote: »
    1.65v drop on the meter of cable with 1.03v expected?


    1.1mΩ = 0.0011Ω

    So at 150 amps the volt drop = 0.0011 x 150 = 0.165 volts per meter


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    #60
    2011
    Moderators, Home & Garden Moderators, Technology & Internet Moderators, Regional East Moderators Posts: 12,596 Mod ✭✭✭✭2011


    Loozer wrote: »
    Wouldn't like to be one of the RECs who had to rip all the cabling out of a job

    Neither would I but it could be worse if the materials had to be paid for too.....


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    #61
    Bruthal
    Closed Accounts Posts: 13,422 ✭✭✭✭Bruthal


    2011 wrote: »
    1.1mΩ = 0.0011Ω

    So at 150 amps the volt drop = 0.0011 x 150 = 0.165 volts per meter
    Yea I still had my 10 meters in the head.


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