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<br />4265
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<br />lhese specifications shall be tested by the contractor
<br />.tJnless specifically indicated otherwise herein, to
<br />:d.~',monstrate that the requirements of these
<br />,'~p'e'cificatiollshave been fulfilled,
<br />
<br />l?LJring a'period of time agreed to by the contractor
<br />~hd the contracting officer, representatives of the
<br />cor.ltractor and the contracting officer shall make
<br />~rrangements for a complete check of the wiring of the
<br />entire installation. During this period the contractor
<br />'.' shall process the checkout to completion, shaH retain
<br />I~jl responsibility for the removal and replacement of
<br />any wiring connections as required in the processing of
<br />the checkout, and shall make any wiring changes which
<br />are necessary for the proper and adequate functioning
<br />..of the installation. The contractor shall be responsible
<br />fo.r and shaH replace at his own expense, any wiring,
<br />instruments, or equipment, which may be damaged in
<br />the' checkout process, unless this damage results from
<br />negligence by the ,Govemment. The wiring checkout
<br />shall include the. insulation test of al~ dbies and
<br />conduct~rs installed by the contractor'- iSee Paragraph
<br />~.22 of Bureau of Reclamation Desig'l'1 Stan~ards No.
<br />5.1 tt shall be the ~esponsibility of the contractor to
<br />have competent personnel at the site processing the
<br />checkout.
<br />
<br />If desired by the contractor or by the Government,
<br />tests shalf be performed on individuat items of
<br />equipment in advance of the comp\efi~n of the
<br />electrical installation. In conjunction with this
<br />requirement, the Goverment wm Poot request tests on
<br />individual items that will require power in excess of
<br />that available for constructioi1' pucposes. The
<br />Government will provide electrtc"~ power for the
<br />acce ptance tests of electrical' :.equipment. The
<br />contractor shall furnish all equipment a.nd materials,
<br />beyond that furnished under this contract, that are
<br />required for the checkout and tests. The con.tractor
<br />shall notify the Government in writing at least 72
<br />hours in advance of the time each test on individual
<br />items is 10 be made in order that .the .tests may be
<br />wjtnessed by a repre~entative of' the contracting
<br />officer. The cost of performing the checkout and tests
<br />and the cost for furnishing equipment and materials for
<br />the checkout and tests shall be included in the
<br />appHcable prices bid in the schedule for furnishing and
<br />installing the various items of equipment and materials
<br />that require checking and testing.
<br />
<br />179. GROUNDING SYSTEM
<br />
<br />a. General.- The contractor shall furnish and install
<br />the complete grounding system in the dam, in
<br />accordance with Drawings No. 58 (382-0.15691. 59
<br />
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<br />SPECIF.\Cf\T,IONS f)lO'~(>I' 5. ,
<br />(SUPPlEMENrAti NQ.tICE:.. ;(3)
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<br />'". Par~ 1 . ii' .. .
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<br />tl82-D-l$701~ 60 (382-D:1571.l, 64 (382;EH.
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<br />and 65'(382-D-1580): ;. ......'..f.
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<br />.rhe: contractor shall. install,. complete .gr~6)i!.
<br />syste,r:n, consisting of bare stranded copper' c-a
<br />and~.accessories, for the .dam. The' conJractQ.r;"s
<br />fU('nish all' materials for the grounding sysJ
<br />includill9 acCessories. ~ccesso~jes shall iQC
<br />t grou'nd 'rods; cable clamps; coimec~ors;' g{d~
<br />clamps;' materials "f.or Cadweld, ThermowelC,l'
<br />equhralent process; and other incidentals. ~~.~
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<br />b. Materials.- t."
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<br />(11 Ground cables.-AII ground cables shaJl~
<br />anneared bare copper cable, co~~e~t"c sira" ". i(
<br />and in accordance with ASTM Designation! ~,
<br />Class 8. The solid wires .llsecf in .fon:ningll~~. .
<br />cable.s .shall be' i.n accordance with, 'A~'
<br />, Desij:J!"lation: 8 3. . I " '. ~f:' .
<br />
<br />(21 Cable fittings, lugs, and co~~e~tor~.~~~1
<br />cable fittings shall be of the bolted solde~;5'
<br />tY'pe .and shall have current-earrying cop :'t\o'.
<br />equal to that of the .cable with.. whicb t~e ,:. ',~:
<br />use.d. All cable fittings, lugs, con.nec.tors; ~og.e'..' r-
<br />with the bolts, nuts, and washers us"ed th'e[e ttl.
<br />. . " jC
<br />for copper ground cables shall be of copp.er..a {.
<br />containiflg not more than 4 percent zinc. '
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<br />i3) Welding.-Where Cadwe'd, ThermoweL
<br />'an equiva1"ent process is used, it" shal
<br />heavy-duty type, made of new material'
<br />fresh stock and the installation shall
<br />performed with heavy-duty welding equip
<br />in accordance with manufacture(s instruct! t- ..~~:
<br />~d'!':": ,
<br />t (41. Ground rods.:-.Each ground rod 'shallha~,'ii'"
<br />layer of not less than O.018-i!1~~:'~~jck cq~~r".
<br />inseparably welded to a .{1',tee4' c'~r.!'!,',
<br />three-fourth-inch nominal diamet~r./'19 fee.tf. tc'.P~:"
<br />and shall be Hubbard Company, Gatalog No ,!lO.
<br />(19671, page 20, Stock No.9. '.~:
<br />McGraw-Edison, Catalog No. WDN4Cl0.;.:". -<':'
<br />
<br />c. Installati~n.- . . ,'!f.:.-'-
<br />~"~.'~:~
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<br />(11 The ground mat shall be installed as Sh:!:;~'
<br />on the drawings, . .:~ ~t',,/
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<br />(2) Excavation and.. placing an~ ~Oni'~a'I' ~ti~~,"
<br />. . b,a'ckfill s~al,l~ be' in. aCG.or'da. nee with para'~j;.~. . .f...
<br />81 arid .112, respectively. . ".,..;
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<br />(3) Connections.-Alr elect;ical eqUiPment"~ ~f.:
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<br />143
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