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Lighting Wiring Consideration.

Zoomup
I am going to use some Henley Paper Insulated House Wiring cable for a lighting circuit. The manufacturer is W.T. Henley's Telegraph Works Company Ltd., Holborn Viaduct, London E.C.1.I am using their Section CA catalogue.

The cable is called YT type. It is paper insulated house wire.


I am thinking of using 3.029 inch twin cable. It is rated at 7.8 Amps. I will use a 5 Amp fuse in the fuse box.


Q1. What is the cable outer covering made of?


Q.2. What is the weight of the cable per 1,000 yards in cwt?


Q.3. What is the price per 1,000 yards.


The year is 1927, the month June.


Z.


Edit. Some minor typos corrected.
  • 0
    informed guesses, based on old cables seen in the past, and the historical price of other things plus a bit.

    I assume you mean 3/ .029"  so three strands, each strand is 29 thou in diameter. closest modern would be 1.5mm2, but it is stranded as 3 strands of 0.5mm2

    So

    Silk or cotton braid.

    about 1CWT.   (8 stones 112 pounds, lets call it 50 kilos for 1km length.) I'm assuming the copper is most of the weight, and perhaps 20-30% more for the paper and silk.


    between and £10-£15 ?


    Coal Fire heated soldering iron iron tinned and ready to sweat the joints, with a roll of empire cloth tape at your side to make good eh Z ?

    Still, no lighting CPC to worry about for another 40 years... How much cable design changed in those decades, and how little in the 50 years since ?

    mike.
  • 0
    It's probably lead sheathed so very heavy.  I ripped lots of it out back in the 60's & 70's.


    Regards


    Geoff Blackwell
  • 0
    GeoffBlackwell:

    It's probably lead sheathed so very heavy.  I ripped lots of it out back in the 60's & 70's.


    Regards


    Geoff Blackwell




    Handy for ballast.


    Nearly fifty years ago I worked for a millionaire engineer who owned a small factory who made millions from patent rights, but could not resist doing cash in hand repairs for farmers, he actually bought scrap lead and copper from the scrapyard to use as ballast in his boat, the second biggest in Weymouth Harbour being beaten in size by the ferry to the Channel Islands. His theory was wherever you go in the world there’s always a scrapyard to convert scrap back to cash and a beach to get some ballast to replace it.


    He would be mighty put out that scrapyards now pay by bank transfer.


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    A thousand yard roll is a bit big to handle.
  • 0
    mapj1:


    Still, no lighting CPC to worry about for another 40 years... How much cable design changed in those decades, and how little in the 50 years since ?

    mike.


    Well Mike, if you did need a C.P.C. (or earth wire) the company can supply A Wiring System With Bonding Wire. Catalogue Section BJ. It is called The Henley Wiring System With Bonding Wire. The wires "Carry their own protection" in the form of a separate earth conductor integral to the cable. Class EZ is for single cables with bonding wire.

    Twin cables with bonding wire is Z2EF . And a triple cable with bonding wire is Class Z3MF.


    The wires are tinned copper. Insulation is vulcanised India rubber. 


    The test pressure was 1,000 Volts for 15 Minutes after 24 hours immersion in water at 60 degree F. (15.6 degrees C).


    Available on 50 or 100  yard drums.


    Z.


     


  • 0
    50 yards will be enough.
  • 0
    Sparkingchip:

    50 yards will be enough.


    I normally just keep 50 metre drums of cable on board my work van to reduce the total weight. That is normally enough for most small jobs, emergency repairs and the "Oh, while you are here" work.


    Z.


  • 0
    How long was the cable on lead drums.  I should imagine if 100m rolls there could have been problems with in flattening out in places under the weight as well as extremely difficult to cart around in the larger sizes.  Especially if you only had a bicycle.  :)


    Probably one of the reasons they only put a couple of sockets in a house as well as not having many appliances



    Gary

  • 0
    Zoomup:

    I am going to use some Henley Paper Insulated House Wiring cable for a lighting circuit. The manufacturer is W.T. Henley's Telegraph Works Company Ltd., Holborn Viaduct, London E.C.1.I am using their Section CA catalogue.

    The cable is called YT type. It is paper insulated house wire.


    I am thinking of using 3.029 inch twin cable. It is rated at 7.8 Amps. I will use a 5 Amp fuse in the fuse box.


    Q1. What is the cable outer covering made of?


    Q.2. What is the weight of the cable per 1,000 yards in cwt?


    Q.3. What is the price per 1,000 yards.


    The year is 1927, the month June.


    Z.


    Edit. Some minor typos corrected.


    Q.1. Answer. Lead.


    Q.2. Answer. 4.5 cwt. (Hundredweight) 112 English pounds per hundredweight. ( c = hundred in roman numerals)


    Q.3. Answer. £30.10. 00 (Thirty and a half pounds, or thirty pounds and fifty pence).


    Imagine that weighing down your plasterboard ceiling.




    Z.


  • 0
    aligarjon:

    How long was the cable on lead drums.  I should imagine if 100m rolls there could have been problems with in flattening out in places under the weight as well as extremely difficult to cart around in the larger sizes.  Especially if you only had a bicycle.  :)


    Probably one of the reasons they only put a couple of sockets in a house as well as not having many appliances



    Gary

     


    50 or 100 yard drums.


    Z.


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