LAKE COLERIDGE SCHEME.
FEASIBLE FOIT'PIOEON BAY
Mr J. Templin, Consulting En giqeer, who has been engaged souib time in drawing up a report on Lak« Coleridge Scheme and has taken Pigeon Bay as a typical bay waitod on°tbe Akaroa County Council in company with Mr A Goodwin on Saturday last. Unfortunately only two members of the Council were present, but taking advantage of Mr Templin's presence an informal discussion took place, when Mr Templin gave some very interesting information Mr Hay asked Mr Templin whether it would be feasible to take everybody into the scheme whether they were near or far. He said he regretted Mr J Tbacker's absence as Mr Thacker advocated taking everybody in even those in the most out of the way places and pool ing the cost of reticulation from a certain point. Mr Templin was mo3t emphatic that such an undertaking would wreck the scheme and probably mean the collection of a rate. He said all those living in remote parts of the district would be cut oat of the rating area and bear no burden of the rate. It would be impracticable to load the scheme with the cost of extra reticulation for the benefit of one man.
It was mentioned also, that the people of Motukarara would take the current, but were outside the Wairewa County Council and Mr Templin was asked if
tbe Peninsula counties could sell tbe current and power to tbem. Mr Tern plin said that -tbe Motukarara people would bave to deal with tbe Govern ment themselves, hut tbe fact that tbey took power and current would reduce the total cost to be borne by those using tbe line from Tai Tapu to Akaroa. Mr Templin, in speaking of his report said it was a conservative one as be had taken copper and all other materials at their present value, and they were exceedingly dear just now. The report ia as follows :—r :
" The Publio Works Department have pro» posed to bring a 10,500 volt three phase transmission line to tbe Peninsula, and the most economical place for distribution to Pigeon Bay is at Duvauchelie's Bay. The line starting from this point will run up the valley, and then across tbe saddle, down the valley on the Pigeon Bay side to the main road, and following the road to tbe sea.
The district is very scattered, and the only way the proposition OBtn.be made at all attractive is by u°ing iron wire In all cases where possible and distributing at a high voltage, using transformers to step down for individual or groups of consumers. This is the'method used in Tai Tapu, which is low 'n the first cost, and at the same time gives a satisfactory service. Daring the last three weeks the price of copper has risen co much that it is bard to safely estimate the cost of the copper wire necessary for the work, but in this report a liberal margin is given. - Iα order to determine the capacity of the transmission line needed for the requirements of Bay, it is necessary to determine, as Dearly as possible, the maximum load which is liable to occur at any one time. From figures obtained by the canvass the lotal oonneoted lighting load is 15 kw,, which with line and transformer losses and diversity factor will produce a demand of about 10 kw, and with two places where extensive heating and oooking is con> templated the total demand for lighting, heating and cooking will be about 20 kw. During shearing season two large shearing sheds will produce a demand of 10 kw., and milking plants will average 15 kw. The shearing, milking and cooking will probably all come on at the same time, and the total maximum demand will be 35 kw., or 48 horee power. A transmission line from Dv» vauchelle'a Bay. having a oapacity of 50 kw. will be ample unless there are others who will go in for estenpive heating and copking, which does not seem probable at present. 1 propose running s three phase copper transmission line from Duvauobelje's Bay to Pigeon Bay, and branch off this .line with single phase (two wires) iron wire to the various consumers. In soveral oases where the bouses are fairly close together one transformer will serve several consumers, while in other cases the consumer has a transformer for hi= individual requirements. I am given to understand that across the saddle trouble may oocur due to wind and snow, and I have allowed for spacing the poles two chains apart and for tbe use of copper dad steel wire, whioh possesses a muoh higher tensile strength than pure copper wire. " Tbe estimate includes the use of Australian hardwood poles, whioh, at the present time are not expensive. The oost of the reticulation for Pigeon Bay, including the main line from Duvauchelle's Bay, but not including right of way and shifting of private telephone lines will be £2500 made up as fellows: — £ s d Poles 30' x 8" x 6" including cartage, arose arms, iron work, fitting and setting 1050 0 0 Wire, (copper and iron) .. 550 0 0 Insulators and incidentals .. 90 0 0 Labour, including seivice connections 325 0 0 Transformers and cut-outs .. 260 0 0 Engineering and contingency 225 0 0
£2500 0 0 At the present time money can be obtained at 5% with debentures, and based on this price the annual charges exelueive of the cost of current, will be aa follows ; — £ s d Interest 5%, Binkina fund 1% 150 0 0 Proportion of labour main- , 40 o'. 0 Maintenance material.. .. 10 0 0 Total £200 0 0 With a promised revenue of at least £400 per annum, and-the current costing 50% of the gross revenue, the soheme would be entirely self supporting as far as Pigeon Bay is conoerned. With a fixed rate of charge for current the clerical workwill not be greatly inoreaeed and this item has not been included in the annual oharges, Trusting this report riieets your approval and desiring to express my appreciation of the assistance given me by Meesrs Bay and "Goodwin;"
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LAKE COLERIDGE SCHEME., Akaroa Mail and Banks Peninsula Advertiser, Volume LXXV, Issue 3518, 1 February 1916