26 20 00.pdf

Ti nker AFB, OK TAFB Techni cal Spr ci f i cat i ons 2019

SECTI ON 26 20 00

I NTERI OR DI STRI BUTI ON SYSTEM

PART 1 GENERAL

1. 1 REFERENCES

The publ i cat i ons l i s t ed bel ow f or m a par t of t hi s speci f i cat i on t o t he ext ent r ef er enced. The publ i cat i ons ar e r ef er r ed t o i n t he t ext by t he basi c desi gnat i on onl y.

ASTM I NTERNATI ONAL ( ASTM)

ASTM B1 ( 2013) St andar d Speci f i cat i on f or Har d- Dr awn Copper Wi r e

ASTM B8 ( 2011) St andar d Speci f i cat i on f or Concent r i c- Lay- St r anded Copper Conduct or s, Har d, Medi um- Har d, or Sof t

ASTM D709 ( 2016) Lami nat ed Ther moset t i ng Mat er i al s

I NSTI TUTE OF ELECTRI CAL AND ELECTRONI CS ENGI NEERS ( I EEE)

I EEE 100 ( 2000; Ar chi ved) The Aut hor i t at i ve Di ct i onar y of I EEE St andar ds Ter ms

I EEE 81 ( 2012) Gui de f or Measur i ng Ear t h Resi st i v i t y, Gr ound I mpedance, and Ear t h Sur f ace Pot ent i al s of a Gr ound Syst em

I EEE C2 ( 2012; Er r at a 1 2012; I NT 1- 4 2012; Er r at a

2 2013; I NT 5- 7 2013; I NT 8- 10 2014; I NT

11 2015; I NT 12 2016) Nat i onal El ect r i cal Saf et y Code

I NTERNATI ONAL ELECTRI CAL TESTI NG ASSOCI ATI ON ( NETA)

NETA ATS ( 2013) St andar d f or Accept ance Test i ng Speci f i cat i ons f or El ect r i cal Power Equi pment and Syst ems

NATI ONAL ELECTRI CAL MANUFACTURERS ASSOCI ATI ON ( NEMA)

ANSI C12. 7 ( 2014) Requi r ement s f or Wat t hour Met er Sockets

ANSI C80. 1 ( 2005) Amer i can Nat i onal St andar d f or El ect r i cal Ri gi d St eel Condui t ( ERSC)

ANSI C80. 3 ( 2005) Amer i can Nat i onal St andar d f or El ect r i cal Met al l i c Tubi ng ( EMT)

ANSI C80. 5 ( 2005) Amer i can Nat i onal St andar d f or El ect r i cal Ri gi d Al umi num Condui t

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NEMA 250 ( 2014) Encl osur es f or El ect r i cal Equi pment ( 1000 Vol t s Maxi mum)

NEMA BU 1. 1 ( 2010) Gener al I nst r uct i ons f or Pr oper Handl i ng, I nst al l at i on, Oper at i on and Mai nt enance of Busway Rat ed 600 V or Less

NEMA FU 1 ( 2012) Low Vol t age Car t r i dge Fuses

NEMA I CS 1 ( 2000; R 2015) St andar d f or I ndust r i al Cont r ol and Syst ems: Gener al Requi r ement s

NEMA I CS 2 ( 2000; R 2005; Er r at a 2008) St andar d f or Cont r ol l er s, Cont act or s, and Over l oad Rel ays Rat ed 600 V

NEMA I CS 3 ( 2005; R 2010) Medi um- Vol t age Cont r ol l er s Rat ed 2001 t o 7200 V AC

NEMA I CS 4 ( 2015) Ter mi nal Bl ocks

NEMA I CS 6 ( 1993; R 2011) Encl osur es

NEMA KS 1 ( 2013) Encl osed and Mi scel l aneous Di st r i but i on Equi pment Swi t ches ( 600 V Maximum)

NEMA MG 1 ( 2014) Mot or s and Gener at or s

NEMA MG 10 ( 2013) Ener gy Management Gui de f or Sel ect i on and Use of Fi xed Fr equency Medi um AC Squi r r el - Cage Pol yphase I nduct i on Mot or s

NEMA MG 11 ( 1977; R 2012) Ener gy Management Gui de f or Sel ect i on and Use of Si ngl e Phase Mot or s

NEMA RN 1 ( 2005; R 2013) Pol yvi nyl - Chl or i de ( PVC) Ext er nal l y Coat ed Gal vani zed Ri gi d St eel Condui t and I nt er medi at e Met al Condui t

NEMA ST 20 ( 1992; R 1997) St andar d f or Dr y- Type Tr ansf or mer s f or Gener al Appl i cat i ons

NEMA TC 14 ( 2002) St andar d f or Rei nf or ced Ther moset t i ng Resi n Condui t ( RTRC) and Fittings

NEMA TC 2 ( 2013) St andar d f or El ect r i cal Pol yvi nyl Chl or i de ( PVC) Condui t

NEMA TC 3 ( 2015) St andar d f or Pol yvi nyl Chl or i de ( PVC) Fi t t i ngs f or Use Wi t h Ri gi d PVC Condui t and Tubi ng

NEMA TP 1 ( 2002) Gui de f or Det er mi ni ng Ener gy Ef f i c i ency f or Di st r i but i on Tr ansf or mer s

NEMA VE 1 ( 2009) St andar d f or Met al Cabl e Tr ay

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Systems

NEMA WD 1 ( 1999; R 2015) St andar d f or Gener al Col or Requi r ement s f or Wi r i ng Devi ces

NEMA WD 6 ( 2016) Wi r i ng Devi ces Di mensi ons Specifications

NEMA Z535. 4 ( 2011) Amer i can Nat i onal St andar d f or Pr oduct Saf et y Si gns and Label s

NATI ONAL FI RE PROTECTI ON ASSOCI ATI ON ( NFPA)

NFPA 70 ( 2014; AMD 1 2013; Er r at a 1 2013; AMD 2 2013; Er r at a 2 2013; AMD 3 2014; Er r at a 3- 4 2014; AMD 4- 6 2014) Nat i onal El ect r i cal Code

NFPA 70E ( 2015; ERTA 1 2015) St andar d f or El ect r i cal Saf et y i n t he Wor kpl ace

NFPA 780 ( 2014) St andar d f or t he I nst al l at i on of Li ght ni ng Pr ot ect i on Syst ems

TELECOMMUNI CATI ONS I NDUSTRY ASSOCI ATI ON ( TI A)

TIA-568-C.1 ( 2009; Add 2 2011; Add 1 2012) Commer ci al Bui l di ng Tel ecommuni cat i ons Cabl i ng Standard

TIA-569 ( 2015d) Commer ci al Bui l di ng St andar d f or Tel ecommuni cat i ons Pat hways and Spaces

TIA-607 ( 2011b) Gener i c Tel ecommuni cat i ons Bondi ng and Gr oundi ng ( Ear t hi ng) f or Cust omer Premises

U. S. NATI ONAL ARCHI VES AND RECORDS ADMI NI STRATI ON ( NARA)

29 CFR 1910. 147 Cont r ol of Hazar dous Ener gy ( Lock Out / Tag Out)

UNDERWRI TERS LABORATORI ES ( UL)

UL 1 ( 2005; Repr i nt Jul 2012) St andar d f or Fl exi bl e Met al Condui t

UL 1063 ( 2006; Repr i nt Jul 2012) Machi ne- Tool Wi r es and Cabl es

UL 1203 ( 2013; Repr i nt Apr 2015) UL St andar d f or Saf et y Expl osi on- Pr oof and Dust - I gni t i on- Pr oof El ect r i cal Equi pment f or Use i n Hazar dous ( Cl assi f i ed) Locat i ons

UL 1242 ( 2006; Repr i nt Mar 2014) St andar d f or El ect r i cal I nt er medi at e Met al Condui t - - Steel

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UL 1449 ( 2014; Repr i nt Mar 2015) Sur ge Pr ot ect i ve Devices

UL 1561 ( 2011; Repr i nt Jun 2015) Dr y- Type Gener al Pur pose and Power Tr ansf or mer s

UL 1569 ( 2014; Repr i nt Dec 2015) St andar d f or Met al - Cl ad Cabl es

UL 1660 ( 2014) Li qui d- Ti ght Fl exi bl e Nonmet al l i c Conduit

UL 1699 ( 2006; Repr i nt Nov 2013) Ar c- Faul t Circuit-Interrupters

UL 198M ( 2003; Repr i nt Feb 2013) St andar d f or Mi ne- Dut y Fuses

UL 20 ( 2010; Repr i nt Feb 2012) Gener al - Use Snap Switches

UL 2043 ( 2013) Fi r e Test f or Heat and Vi s i bl e Smoke Rel ease f or Di scr et e Pr oduct s and Thei r Accessor i es I nst al l ed i n Ai r - Handl i ng Spaces

UL 360 ( 2013; Repr i nt Jan 2015) Li qui d- Ti ght Fl exi bl e St eel Condui t

UL 4 ( 2004; Repr i nt Oct 2013) St andar d f or Ar mor ed Cabl e

UL 4248- 1 ( 2007; Repr i nt Oct 2013) UL St andar d f or Saf et y Fusehol der s - Par t 1: Gener al Requirements

UL 4248- 12 ( 2007; Repr i nt Dec 2012) UL St andar d f or Saf et y Fusehol der s - Par t 12: Cl ass R

UL 44 ( 2014; Repr i nt Feb 2015) Ther moset - I nsul at ed Wi r es and Cabl es

UL 467 ( 2013) Gr oundi ng and Bondi ng Equi pment

UL 486A- 486B ( 2013; Repr i nt Jan 2016) Wi r e Connect or s

UL 486C ( 2013; Repr i nt Jan 2016) Spl i c i ng Wi r e Connectors

UL 489 ( 2013; Repr i nt Mar 2014) Mol ded- Case Ci r cui t Br eaker s, Mol ded- Case Swi t ches, and Ci r cui t - Br eaker Encl osur es

UL 498 ( 2012; Repr i nt Jan 2016) At t achment Pl ugs and Recept acl es

UL 5 ( 2011) Sur f ace Met al Raceways and Fi t t i ngs

UL 50 ( 2007; Repr i nt Apr 2012) Encl osur es f or

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El ect r i cal Equi pment , Non- envi r onment al Considerations

UL 506 ( 2008; Repr i nt Oct 2013) Speci al t y Transformers

UL 508 ( 1999; Repr i nt Oct 2013) I ndust r i al Cont r ol Equi pment

UL 510 ( 2005; Repr i nt Jul 2013) Pol yvi nyl Chl or i de, Pol yet hyl ene and Rubber I nsul at i ng Tape

UL 514A ( 2013) Met al l i c Out l et Boxes

UL 514B ( 2012; Repr i nt Nov 2014) Condui t , Tubi ng and Cabl e Fi t t i ngs

UL 514C ( 2014; Repr i nt Dec 2014) Nonmet al l i c Out l et Boxes, Fl ush- Devi ce Boxes, and Covers

UL 5A ( 2015) Nonmet al l i c Sur f ace Raceways and Fittings

UL 6 ( 2007; Repr i nt Nov 2014) El ect r i cal Ri gi d Met al Condui t - St eel

UL 651 ( 2011; Repr i nt May 2014) St andar d f or Schedul e 40 and 80 Ri gi d PVC Condui t and Fittings

UL 67 ( 2009; Repr i nt Apr 2015) St andar d f or Panelboards

UL 674 ( 2011; Repr i nt Jul 2013) El ect r i c Mot or s and Gener at or s f or Use i n Di v i s i on 1 Hazar dous ( Cl assi f i ed) Locat i ons

UL 6A ( 2008; Repr i nt Nov 2014) El ect r i cal Ri gi d Met al Condui t - Al umi num, Red Br ass, and St ai nl ess St eel

UL 797 ( 2007; Repr i nt Dec 2012) El ect r i cal Met al l i c Tubi ng - - St eel

UL 817 ( 2015; Repr i nt Jan 2016) St andar d f or Cor d Set s and Power - Suppl y Cor ds

UL 83 ( 2014) Ther mopl ast i c- I nsul at ed Wi r es and Cables

UL 845 ( 2005; Repr i nt Jul 2011) Mot or Cont r ol Centers

UL 854 ( 2004; Repr i nt Nov 2014) St andar d f or Ser vi ce- Ent r ance Cabl es

UL 857 ( 2009; Repr i nt Dec 2011) Busways

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UL 869A ( 2006) Ref er ence St andar d f or Ser vi ce Equipment

UL 870 ( 2008; Repr i nt Feb 2013) St andar d f or Wi r eways, Auxi l i ar y Gut t er s, and Associ at ed Fi t t i ngs

UL 943 ( 2006; Repr i nt Jun 2012) Gr ound- Faul t Circuit-Interrupters

UL 984 ( 1996; Repr i nt Sep 2005) Her met i c Ref r i ger ant Mot or - Compr essor s

1. 2 DEFINITIONS

Unl ess ot her wi se speci f i ed or i ndi cat ed, el ect r i cal and el ect r oni cs t er ms used i n t hese speci f i cat i ons, and on t he dr awi ngs, ar e as def i ned i n

I EEE 100.

1. 3 SUBMITTALS

Submi t t he f ol l owi ng i n accor dance wi t h Sect i on 01 33 00, SUBMI TTAL

PROCEDURES.

SD- 02 Shop Dr awi ngs

Panelboards

Transformers

Busway

Cabl e t r ays

Mot or cont r ol cent er s

Wireways

Load cent er s f or housi ng uni t s

Mar ki ng st r i ps

SD- 03 Pr oduct Dat a

Receptacles

Ci r cui t br eaker s

Switches

Transformers

Encl osed ci r cui t br eaker s

Mot or cont r ol l er s

Combi nat i on mot or cont r ol l er s

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Load cent er s f or housi ng uni t s

Manual mot or st ar t er s

Met er base onl y

Gr oundi ng Busbar

Sur ge pr ot ect i ve devi ces

SD- 06 Test Repor t s

600- vol t wi r i ng t est

Gr oundi ng syst em t est

Tr ansf or mer t est s

Gr ound- f aul t r ecept acl e t est

SD- 07 Cer t i f i cat es

Fuses

SD- 10 Oper at i on and Mai nt enance Dat a

El ect r i cal Syst ems

1. 4 QUALI TY ASSURANCE

1. 4. 1 Regul at or y Requi r ement s

I n each of t he publ i cat i ons r ef er r ed t o her ei n, consi der t he advi sor y pr ovi s i ons t o be mandat or y, as t hough t he wor d, " shal l " or " must " had been subst i t ut ed f or " shoul d" wher ever i t appear s. I nt er pr et r ef er ences i n t hese publ i cat i ons t o t he " aut hor i t y havi ng j ur i sdi ct i on, " or wor ds of s i mi l ar meani ng, t o mean t he Cont r act i ng Of f i cer . Pr ovi de equi pment , mat er i al s, i nst al l at i on, and wor kmanshi p i n accor dance wi t h t he mandat or y and advi sor y pr ovi s i ons of NFPA 70 unl ess mor e st r i ngent r equi r ement s ar e speci f i ed or i ndi cat ed.

1. 4. 2 St andar d Pr oduct s

Pr ovi de mat er i al s and equi pment t hat ar e pr oduct s of manuf act ur er s r egul ar l y engaged i n t he pr oduct i on of such pr oduct s whi ch ar e of equal mat er i al , desi gn and wor kmanshi p and:

a. Have been i n sat i sf act or y commer ci al or i ndust r i al use f or 2 year s pr i or t o bi d openi ng i ncl udi ng appl i cat i ons of equi pment and mat er i al s under s i mi l ar c i r cumst ances and of s i mi l ar s i ze.

b. Have been on sal e on t he commer ci al mar ket t hr ough adver t i sement s, manuf act ur er s ' cat al ogs, or br ochur es dur i ng t he 2- year per i od.

c. Wher e t wo or mor e i t ems of t he same cl ass of equi pment ar e r equi r ed, pr ovi de pr oduct s of a s i ngl e manuf act ur er ; however , t he component par t s of t he i t em need not be t he pr oduct s of t he same manuf act ur er unl ess st at ed i n t hi s sect i on.

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1. 4. 2. 1 Al t er nat i ve Qual i f i cat i ons

Pr oduct s havi ng l ess t han a 2- year f i el d ser vi ce r ecor d wi l l be accept abl e i f a cer t i f i ed r ecor d of sat i sf act or y f i el d oper at i on f or not l ess t han 6000 hour s, excl usi ve of t he manuf act ur er s ' f act or y or l abor at or y t est s, i s f ur ni shed.

1. 4. 2. 2 Mat er i al and Equi pment Manuf act ur i ng Dat e

Pr oduct s manuf act ur ed mor e t han 3 year s pr i or t o dat e of del i ver y t o s i t e ar e not accept abl e.

1. 5 MAINTENANCE

1. 5. 1 El ect r i cal Syst ems Dat a

Submi t Oper at i on and Mai nt enance Manual s i n accor dance wi t h Sect i on

01 78 23 OPERATI ON AND MAI NTENANCE DATA.

1. 5. 2 Assembl ed Oper at i on and Mai nt enance Manual s

Assembl e and secur el y bi nd manual s i n dur abl e, har d cover ed, wat er r esi st ant bi nder s. Assembl e and i ndex t he manual s i n t he f ol l owi ng or der wi t h a t abl e of cont ent s:

a. Manuf act ur er ' s O&M i nf or mat i on r equi r ed by t he par agr aph SD- 10, OPERATI ON AND MAI NTENANCE DATA.

b. Cat al og dat a r equi r ed by t he par agr aph SD- 03, PRODUCT DATA.

c. Dr awi ngs r equi r ed by t he par agr aph SD- 02, SHOP DRAWI NGS.

d. Spar e par t s and suppl y l i s t .

e. I nf or mat i on on met er i ng.

1. 6 WARRANTY

Pr ovi de equi pment i t ems suppor t ed by ser vi ce or gani zat i ons t hat ar e r easonabl y conveni ent t o t he equi pment i nst al l at i on i n or der t o r ender sat i sf act or y ser vi ce t o t he equi pment on a r egul ar and emer gency basi s dur i ng t he war r ant y per i od of t he cont r act .

1. 7 SEI SMI C REQUI REMENTS

Pr ovi de sei smi c det ai l s conf or mi ng t o Sect i on 13 48 00, SEI SMI C PROTECTI ON FOR MI SCELLANEOUS EQUI PMENT and t o Sect i on 26 05 48. 00 10, SEI SMI C

PROTECTI ON FOR ELECTRI CAL EQUI PMENT.

PART 2 PRODUCTS

2. 1 MATERI ALS AND EQUI PMENT

As a mi ni mum, meet r equi r ement s of UL, wher e UL st andar ds ar e est abl i shed f or t hose i t ems, and r equi r ement s of NFPA 70 f or al l mat er i al s, equi pment , and devi ces.

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2. 2 CONDUI T AND FI TTI NGS

Conf or m t o t he f ol l owi ng:

2. 2. 1 Ri gi d Met al l i c Condui t

2. 2. 1. 1 Ri gi d, Thr eaded Zi nc- Coat ed St eel Condui t

ANSI C80. 1, UL 6.

2. 2. 1. 2 Ri gi d Al umi num Condui t

ANSI C80. 5, UL 6A.

2. 2. 2 Ri gi d Nonmet al l i c Condui t

PVC Type EPC- 40, and EPC- 80 i n accor dance wi t h NEMA TC 2, UL 651, or f i ber gl ass condui t , i n accor dance wi t h NEMA TC 14.

2. 2. 3 I nt er medi at e Met al Condui t ( I MC)

UL 1242, z i nc- coat ed st eel onl y.

2. 2. 4 El ect r i cal , Zi nc- Coat ed St eel Met al l i c Tubi ng ( EMT)

UL 797, ANSI C80. 3.

2. 2. 5 Pl ast i c- Coat ed Ri gi d St eel and I MC Condui t

NEMA RN 1, Type 40( 40 mi l s t hi ck) .

2. 2. 6 Fl exi bl e Met al Condui t

UL 1.

2. 2. 6. 1 Li qui d- Ti ght Fl exi bl e Met al Condui t , St eel

UL 360.

2. 2. 7 Fi t t i ngs f or Met al Condui t , EMT, and Fl exi bl e Met al Condui t

UL 514B. Fer r ous f i t t i ngs: cadmi um- or z i nc- coat ed i n accor dance wi t h

UL 514B.

2. 2. 7. 1 Fi t t i ngs f or Ri gi d Met al Condui t and I MC

Thr eaded- t ype. Spl i t coupl i ngs unaccept abl e.

2. 2. 7. 2 Fi t t i ngs f or EMT

Di e Cast compr essi on t ype.

2. 2. 8 Fi t t i ngs f or Ri gi d Nonmet al l i c Condui t

NEMA TC 3 f or PVC and NEMA TC 14 f or f i ber gl ass, and UL 514B.

2. 2. 9 Li qui d- Ti ght Fl exi bl e Nonmet al l i c Condui t

UL 1660.

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2. 3 SURFACE RACEWAY

2. 3. 1 Sur f ace Met al Raceway

UL 5, t wo- pi ece pai nt ed st eel , t ot al l y encl osed, snap- cover t ype. Wi r e al t er nat e r ecept acl es on di f f er ent c i r cui t s.

2. 3. 2 Sur f ace Nonmet al l i c Raceway

UL 5A, nonmet al l i c t ot al l y encl osed, snap- cover t ype. Pr ovi de mul t i pl e out l et - t ype r aceway wi t h gr oundi ng- t ype r ecept acl e wher e i ndi cat ed.

Pr ovi de r ecept acl es as speci f i ed her ei n, spaced a mi ni mum of one ever y 18 i nches. Wi r e al t er nat e r ecept acl es on di f f er ent c i r cui t s.

2. 4 BUSWAY

NEMA BU 1. 1, UL 857. Pr ovi de t he f ol l owi ng:

a. Buses: copper .

b. Busways: vol t age and cont i nuous cur r ent amper age shal l be as i ndi cat ed i n t he cont r act document s. Thr ee- phase bus shal l be t hr ee-or f our - wi r e, as i ndi cat ed i n t he pr oj ect dr awi ngs or st at ement of wor k, and i ncl ude i nt egr al or i nt er nal gr ound bus.

c. Shor t c i r cui t r at i ng: r at i ng shal l be as i ndi cat ed i n t he pr oj ect dr awi ngs or st at ement of wor k.

d. Busway syst ems: sui t abl e f or use i ndoor s.

e. Encl osur es: met al l i c .

f . Har dwar e: pl at ed or ot her wi se pr ot ect ed t o r esi st cor r osi on.

g. Joi nt s: one- bol t t ype wi t h t hr ough- bol t s, whi ch can be checked f or t i ght ness wi t hout deener gi z i ng syst em.

h. Maxi mum hot spot t emper at ur e r i se at any poi nt i n busway at cont i nuous r at ed l oad: do not exceed 55 degr ees C above maxi mum ambi ent t emper at ur e of 40 degr ees C i n any posi t i on.

i . I nt er nal bar r i er s t o pr event movement of super heat ed gases.

j . Coor di nat e pr oper vol t age phasi ng of ent i r e bus duct syst em, f or exampl e wher e busway i nt er f aces wi t h t r ansf or mer s, swi t chgear , swi t chboar ds, mot or cont r ol cent er s, and ot her syst em component s.

2. 4. 1 Feeder Busways

Pr ovi de vent i l at ed, except t hat ver t i cal busways wi t hi n 6 f eet of f l oor s must be unvent i l at ed, l ow- i mpedance busway. Pr ovi de bus bar s f ul l y cover ed wi t h i nsul at i ng mat er i al , except at st abs. Pr ovi de an ent i r el y pol ar i zed busway syst em.

2. 4. 2 Pl ug- I n Busways

Unvent i l at ed t ype. Pr ovi de t he f ol l owi ng:

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a. Pl ug- i n uni t s: As i ndi cat ed i n cont r act document s: f usi bl e, handl e- oper at ed, swi t ch t ype, hor sepower - r at ed; c i r cui t br eaker - t ype;

or handl e- oper at ed, swi t ch t ype, equi pped wi t h hi gh i nt er r upt i ng- capaci t y, cur r ent - l i mi t i ng f uses.

b. Bus bar s: cover ed wi t h i nsul at i ng mat er i al t hr oughout , except at j oi nt s and ot her connect i on poi nt s.

c. As i ndi cat ed i n t he cont r act document s, a hook st i ck of sui t abl e l engt h shal l be pr ovi ded f or oper at i ng pl ug- i n uni t s f r om t he f l oor .

2. 5 CABLE TRAYS

NEMA VE 1. Pr ovi de t he f ol l owi ng:

a. Cabl e t r ays: f or m a wi r eway syst em, wi t h a nomi nal dept h as i ndi cat ed i n t he cont r act document s.

b. Cabl e t r ays: const r uct ed of al umi num, copper - f r ee al umi num, or st eel t hat has been zi nc- coat ed af t er f abr i cat i on.

c. Cabl e t r ays: i ncl ude spl i ce and end pl at es, dr opout s, and mi scel l aneous har dwar e.

d. Edges, f i t t i ngs, and har dwar e: f i ni shed f r ee f r om bur r s and shar p edges.

e. Fi t t i ngs: ensur e not l ess t han l oad- car r y i ng abi l i t y of st r ai ght t r ay sect i ons and have manuf act ur er ' s mi ni mum st andar d r adi us.

f . Radi us of bends: as i ndi cat ed.

2. 5. 1 Basket - Type Cabl e Tr ays

Pr ovi de si ze as i ndi cat ed wi t h maxi mum wi r e mesh spaci ng of 2 by 4 i nch.

2. 5. 2 Tr ough- Type Cabl e Tr ays

Pr ovi de si ze as i ndi cat ed.

2. 5. 3 Ladder - Type Cabl e Tr ays

Pr ovi de si ze as i ndi cat ed wi t h maxi mum r ung spaci ng of 9 i nches.

2. 5. 4 Channel - Type Cabl e Tr ays

Pr ovi de si ze as i ndi cat ed. Pr ovi de t r ays wi t h one- pi ece const r uct i on havi ng sl ot s spaced not mor e t han 4 1/ 2 i nches on cent er s.

2. 5. 5 Sol i d Bot t om- Type Cabl e Tr ays

Pr ovi de si ze as i ndi cat ed. Do not pr ovi de sol i d cover s.

2. 5. 6 Cantilever

Cant i l ever - t ype, cent er - hung cabl e t r ays may be pr ovi ded at t he Cont r act or ' s opt i on i n l i eu of ot her cabl e t r ay t ypes speci f i ed.

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2. 6 OPEN TELECOMMUNI CATI ONS CABLE SUPPORT

2. 6. 1 Open Top Cabl e Suppor t s

Pr ovi de open t op cabl e suppor t s i n accor dance wi t h UL 2043. Pr ovi de gal vani zed zi nc- coat ed st eel open t op cabl e suppor t s as i ndi cat ed.

2. 6. 2 Cl osed Ri ng Cabl e Suppor t s

Pr ovi de cl osed r i ng cabl e suppor t s i n accor dance wi t h UL 2043. Pr ovi de gal vani zed zi nc- coat ed st eel c l osed r i ng cabl e suppor t s as i ndi cat ed.

2. 7 OUTLET BOXES AND COVERS

UL 514A, cadmi um- or z i nc- coat ed, i f f er r ous met al . UL 514C, i f nonmetallic.

2. 7. 1 Fl oor Out l et Boxes

Pr ovi de t he f ol l owi ng:

a. Boxes: adj ust abl e and concr et e t i ght .

b. Each out l et : consi st i ng of nonmet al l i c or cast - met al body wi t h t hr eaded openi ngs, f or condui t s, adj ust abl e r i ng, and cover pl at e wi t h t hr eaded- pl ug si zed as i ndi cat ed n t he cont r act document s.

c. Tel ecommuni cat i ons out l et s: consi st i ng of f l ush, al umi num or st ai nl ess st eel housi ng wi t h a r ecept acl e as speci f i ed and 3/ 4 i nch t op openi ng.

d. Recept acl e out l et s: consi st i ng of f l ush al umi num or st ai nl ess st eel housi ng wi t h dupl ex- t ype r ecept acl e as speci f i ed her ei n.

e. Pr ovi de gasket s wher e necessar y t o ensur e wat er t i ght i nst al l at i on.

f . Pr ovi de pl ugs wi t h i nst al l at i on i nst r uct i ons t o t he Cont r act i ng Of f i cer f or 5 per cent of out l et boxes f or t he cappi ng of out l et s upon r emoval of ser vi ce f i t t i ngs.

2. 7. 2 Out l et Boxes f or Tel ecommuni cat i ons Syst em

Pr ovi de t he f ol l owi ng:

a. St andar d t ype 4 i nches squar e by 2 1/ 8 i nches deep.

b. Out l et boxes f or wal l - mount ed t el ecommuni cat i ons out l et s: 4 by 2 1/ 8 by 2 1/ 8 i nches deep.

c. Dept h of boxes: l ar ge enough t o al l ow manuf act ur er s ' r ecommended conduct or bend r adi i .

d. Out l et boxes f or f i ber opt i c t el ecommuni cat i on out l et s: i ncl ude a mi ni mum 3/ 8 i nch deep si ngl e or t wo gang pl ast er r i ng as shown and i nst al l ed usi ng a mi ni mum 1 i nch condui t syst em.

e. Out l et boxes f or handi capped t el ecommuni cat i ons st at i on: 4 by 2 1/ 8 by 2 1/ 8 i nches deep.

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2. 7. 3 Cl ock Out l et f or Use i n Ot her Than Wi r ed Cl ock Syst em

Pr ovi de t he f ol l owi ng:

a. Out l et box wi t h pl ast i c cover , wher e r equi r ed, and si ngl e r ecept acl e wi t h c l ock out l et pl at e.

b. Recept acl e: r ecessed suf f i c i ent l y wi t hi n box t o al l ow compl et e i nser t i on of st andar d cap, f l ush wi t h pl at e.

c. Sui t abl e c l i p or suppor t f or hangi ng cl ock: secur ed t o t op pl at e.

d. Mat er i al and f i ni sh of pl at e: as speci f i ed i n par agr aph DEVI CE PLATES of t hi s sect i on.

2. 8 CABI NETS, JUNCTI ON BOXES, AND PULL BOXES

Vol ume gr eat er t han 100 cubi c i nches, UL 50, hot - di p, z i nc- coat ed, i f sheet st eel .

2. 9 WI RES AND CABLES

Pr ovi de wi r es and cabl es i n accor dance appl i cabl e r equi r ement s of NFPA 70 and UL f or t ype of i nsul at i on, j acket , and conduct or speci f i ed or i ndi cat ed. Do not use wi r es and cabl es manuf act ur ed mor e t han 12 mont hs pr i or t o dat e of del i ver y t o s i t e.

2. 9. 1 Conductors

Pr ovi de t he f ol l owi ng:

a. Conduct or s i zes and capaci t i es shown ar e based on copper , unl ess i ndi cat ed ot her wi se.

b. Conduct or s No. 8 AWG and l ar ger di amet er : st r anded.

c. Conduct or s No. 10 AWG and smal l er di amet er : st r anded.

d. Conduct or s f or r emot e cont r ol , al ar m, and si gnal c i r cui t s, c l asses 1, 2, and 3: st r anded unl ess speci f i cal l y i ndi cat ed ot her wi se.

e. Al l conduct or s: copper .

2. 9. 1. 1 Mi ni mum Conduct or Si zes

Pr ovi de mi ni mum conduct or s i ze i n accor dance wi t h t he f ol l owi ng:

a. Br anch ci r cui t s: No. 12 AWG.

b. Cl ass 1 r emot e- cont r ol and si gnal c i r cui t s: No. 14 AWG.

c. Cl ass 2 l ow- ener gy, r emot e- cont r ol and si gnal c i r cui t s: No. 16 AWG.

d. Cl ass 3 l ow- ener gy, r emot e- cont r ol , al ar m and si gnal c i r cui t s: No. 22

AWG.

2. 9. 2 Col or Codi ng

Pr ovi de col or codi ng f or ser vi ce, f eeder , br anch, cont r ol , and si gnal i ng

Apr i l 2019 Page 13 SECTI ON 26 20 00 ci r cui t conduct or s.

2. 9. 2. 1 Gr ound and Neut r al Conduct or s

Pr ovi de col or codi ng of gr ound and neut r al conduct or s as f ol l ows:

a. Gr oundi ng conduct or s: Gr een.

b. Neut r al conduct or s: Whi t e.

c. Except i on, wher e neut r al s of mor e t han one syst em ar e i nst al l ed i n same r aceway or box, ot her neut r al s col or codi ng: whi t e wi t h a di f f er ent col or ed ( not gr een) st r i pe f or each.

2. 9. 2. 2 Ungr ounded Conduct or s

Pr ovi de col or codi ng of ungr ounded conduct or s i n di f f er ent vol t age syst ems as f ol l ows:

a. 208/ 120 vol t , t hr ee- phase

( 1) Phase A - bl ack

( 2) Phase B - r ed

( 3) Phase C - bl ue

b. 480/ 277 vol t , t hr ee- phase

( 1) Phase A - br own

( 2) Phase B - or ange

( 3) Phase C - yel l ow

c. 120/ 240 vol t , s i ngl e phase: Bl ack and r ed

2. 9. 3 Insulation

Unl ess speci f i ed or i ndi cat ed ot her wi se or r equi r ed by NFPA 70, pr ovi de power and l i ght i ng wi r es r at ed f or 600- vol t s, Type THWN/ THHN conf or mi ng t o UL 83, except t hat gr oundi ng wi r e may be t ype TW conf or mi ng t o UL 83;

r emot e- cont r ol and si gnal c i r cui t s: Type TW or TF, conf or mi ng t o UL 83.

Wher e l i ght i ng f i x t ur es r equi r e 90- degr ee Cent i gr ade ( C) conduct or s, pr ovi de onl y conduct or s wi t h 90- degr ee C i nsul at i on or bet t er .

2. 9. 4 Bondi ng Conduct or s

ASTM B1, sol i d bar e copper wi r e f or s i zes No. 8 AWG and smal l er di amet er ;

ASTM B8, Cl ass B, st r anded bar e copper wi r e f or s i zes No. 6 AWG and l ar ger diameter.

2. 9. 4. 1 Tel ecommuni cat i ons Bondi ng Backbone ( TBB)

Pr ovi de a copper conduct or TBB i n accor dance wi t h TIA-607 wi t h No. 6 AWG mi ni mum si ze, and si zed at 2 kcmi l per l i near f oot of conduct or l engt h up t o a maxi mum si ze of 3/ 0 AWG.

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2. 9. 4. 2 Bondi ng Conduct or f or Tel ecommuni cat i ons

Pr ovi de a copper conduct or Bondi ng Conduct or f or Tel ecommuni cat i ons bet ween t he t el ecommuni cat i ons mai n gr oundi ng busbar ( TMGB) and t he el ect r i cal ser vi ce gr ound i n accor dance wi t h TIA-607 . Si ze t he bondi ng conduct or f or t el ecommuni cat i ons t he same as t he TBB.

2. 9. 5 Ser vi ce Ent r ance Cabl es

Ser vi ce Ent r ance ( SE) and Under gr ound Ser vi ce Ent r ance ( USE) Cabl es, UL 854.

2. 9. 6 Met al - Cl ad Cabl e

UL 1569; NFPA 70, Type MC cabl e.

2. 9. 7 Ar mor ed Cabl e

UL 4; NFPA 70, Type AC cabl e.

2. 9. 8 Cabl e Tr ay Cabl e or Power Li mi t ed Tr ay Cabl e

UL l i s t ed; t ype TC or PLTC.

2. 9. 9 Cor d Set s and Power - Suppl y Cor ds

UL 817.

2. 10 SPLI CES AND TERMI NATI ON COMPONENTS

UL 486A- 486B f or wi r e connect or s and UL 510 f or i nsul at i ng t apes.

Connect or s f or No. 10 AWG and smal l er di amet er wi r es: i nsul at ed, pr essur e- t ype i n accor dance wi t h UL 486A- 486B or UL 486C ( t wi st - on spl i c i ng connect or ) . Pr ovi de sol der l ess t er mi nal l ugs on st r anded conductors.

2. 11 DEVI CE PLATES

Pr ovi de t he f ol l owi ng:

a. UL l i s t ed, one- pi ece devi ce pl at es f or out l et s t o sui t t he devi ces installed.

b. For met al out l et boxes, pl at es on unf i ni shed wal l s: z i nc- coat ed sheet st eel or cast met al havi ng r ound or bevel ed edges.

c. For nonmet al l i c boxes and f i t t i ngs, ot her sui t abl e pl at es may be provided.

d. Pl at es on f i ni shed wal l s ( as i ndi cat ed i n t he cont r act document s) :

nyl on or l exan, mi ni mum 0. 03 i nch wal l t hi ckness and same col or as r ecept acl e or t oggl e swi t ch wi t h whi ch t hey ar e mount ed.

e. Pl at es on f i ni shed wal l s ( as i ndi cat ed i n t he cont r act document s) :

sat i n f i ni sh st ai nl ess st eel or br ushed- f i ni sh al umi num, mi ni mum 0. 03 i nch t hi ck.

f . Scr ews: machi ne- t ype wi t h count er sunk heads i n col or t o mat ch f i ni sh of pl at e.

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g. Sect i onal t ype devi ce pl at es ar e not be per mi t t ed.

h. Pl at es i nst al l ed i n wet l ocat i ons: gasket ed and UL l i s t ed f or " wet locations."

2. 12 SWITCHES

2. 12. 1 Toggl e Swi t ches

NEMA WD 1, UL 20, s i ngl e pol e, doubl e pol e, t hr ee- way, or f our - way( as i ndi cat ed i n t he cont r act document s) , t ot al l y encl osed wi t h bodi es of t her mopl ast i c or t her moset pl ast i c and mount i ng st r ap wi t h gr oundi ng scr ew. I ncl ude t he f ol l owi ng:

a. Handl es: i vor y or br own t her mopl ast i c, as i ndi cat ed.

b. Wi r i ng t er mi nal s: scr ew- t ype, s i de- wi r ed.

c. Cont act s: s i l ver - cadmi um and cont act ar m - one- pi ece copper al l oy.

d. Swi t ches: r at ed qui et - t ype ac onl y, 120/ 277 vol t s, wi t h cur r ent r at i ng and number of pol es i ndi cat ed.

Mi ni mum 20 amp r at ed devi ces

2. 12. 2 Swi t ch wi t h Red Pi l ot Handl e

NEMA WD 1. Pr ovi de t he f ol l owi ng:

a. Pi l ot l i ght s t hat ar e i nt egr al l y const r uct ed as a par t of t he swi t ch' s handle.

b. Pi l ot l i ght col or : r ed and i l l umi nat e whenever t he swi t ch i s c l osed or " on" .

c. Pi l ot l i ght ed swi t ch: r at ed 20 amps and 120 vol t s or 277 vol t s as indicated.

d. The ci r cui t ' s neut r al conduct or t o each swi t ch wi t h a pi l ot l i ght .

2. 12. 3 Br eaker s Used as Swi t ches

For 120- and 277- Vol t f l uor escent f i x t ur es, mar k br eaker s " SWD" i n accor dance wi t h UL 489.

2. 12. 4 Di sconnect Swi t ches

NEMA KS 1. Pr ovi de heavy dut y- t ype swi t ches wher e i ndi cat ed, wher e swi t ches ar e r at ed hi gher t han 240 vol t s, and f or doubl e- t hr ow swi t ches.

Ut i l i ze Cl ass R f usehol der s and f uses f or f used swi t ches, unl ess i ndi cat ed ot her wi se. Pr ovi de hor sepower r at ed f or swi t ches ser vi ng as t he mot or - di sconnect means. Pr ovi de swi t ches i n NEMA , encl osur e as i ndi cat ed per NEMA I CS 6.

2. 13 FUSES

NEMA FU 1. Pr ovi de compl et e set of f uses f or each f usi bl e swi t ch, panel and cont r ol cent er . Coor di nat e t i me- cur r ent char act er i st i cs cur ves of f uses ser vi ng mot or s or connect ed i n ser i es wi t h c i r cui t br eaker s f or

Apr i l 2019 Page 16 SECTI ON 26 20 00 pr oper oper at i on. Submi t coor di nat i on dat a f or appr oval . Pr ovi de f uses wi t h a vol t age r at i ng not l ess t han ci r cui t vol t age.

2. 13. 1 Fuseholders

Pr ovi de i n accor dance wi t h UL 4248- 1.

2. 13. 2 Car t r i dge Fuses, Cur r ent Li mi t i ng Type ( Cl ass R)

UL 198M, Cl ass RK- 1 or RK- 5. Pr ovi de onl y Cl ass R associ at ed f usehol der s i n accor dance wi t h UL 4248- 12.

2. 13. 3 Car t r i dge Fuses, Hi gh- I nt er r upt i ng Capaci t y, Cur r ent Li mi t i ng Type ( Cl asses J, L, and CC)

UL 198M, Cl ass J f or zer o t o 600 amper es, Cl ass L f or 601 t o 6, 000 amper es, and Cl ass CC f or zer o t o 30 amper es.

2. 13. 4 Car t r i dge Fuses, Cur r ent Li mi t i ng Type ( Cl ass T)

UL 198M, Cl ass T f or zer o t o 1, 200 amper es, 300 vol t s; and zer o t o 800 amper es, 600 vol t s.

2. 14 RECEPTACLES

Pr ovi de t he f ol l owi ng:

a. UL 498, har d use ( al so desi gnat ed heavy- dut y) , gr oundi ng- t ype.

b. Rat i ngs and conf i gur at i ons: as i ndi cat ed.

c. Bodi es: i vor y or br own ( as i ndi cat ed) as per NEMA WD 1.

d. Face and body: t her mopl ast i c suppor t ed on a met al mount i ng st r ap.

e. Di mensi onal r equi r ement s: per NEMA WD 6.

f . Scr ew- t ype, s i de- wi r ed wi r i ng t er mi nal s or of t he sol der l ess pr essur e t ype havi ng sui t abl e conduct or - r el ease ar r angement .

g. Gr oundi ng pol e connect ed t o mount i ng st r ap.

h. The r ecept acl e: cont ai ni ng t r i pl e- wi pe power cont act s and doubl e or t r i pl e- wi pe gr ound cont act s.

Mi ni mum 20 amp r at ed devi ces

2. 14. 1 Swi t ched Dupl ex Recept acl es

Pr ovi de separ at e t er mi nal s f or each ungr ounded pol e. Top r ecept acl e:

swi t ched when i nst al l ed.

2. 14. 2 Weat her pr oof Recept acl es

Pr ovi de r ecept acl es, UL l i s t ed f or use i n " wet l ocat i ons" . I ncl ude cast met al box wi t h gasket ed, hi nged, l ockabl e and weat her pr oof whi l e- i n- use, di e- cast met al / al umi num cover pl at e.

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2. 14. 3 Gr ound- Faul t Ci r cui t I nt er r upt er Recept acl es

UL 943, dupl ex t ype f or mount i ng i n st andar d out l et box. Pr ovi de devi ce capabl e of det ect i ng cur r ent l eak of 6 mi l l i amper es or gr eat er and t r i ppi ng per r equi r ement s of UL 943 f or Cl ass A gr ound- f aul t c i r cui t i nt er r upt er devi ces. Pr ovi de scr ew- t ype, s i de- wi r ed wi r i ng t er mi nal s or pr e- wi r ed ( pi gt ai l ) l eads.

2. 14. 4 Speci al Pur pose Recept acl es

Recept acl es ser vi ng 20 amps ar e speci al pur pose. pr ovi de r ecept acl es i n NEMA conf i gur at i on, r at ed amper es, and vol t s as i ndi cat ed i n t he cont r act document s. Fur ni sh one mat chi ng pl ug wi t h each r ecept acl e ( unl ess i ndi cat ed ot her wi se) .

2. 14. 5 Plugs

Pr ovi de heavy- dut y, r ubber - cover ed t hr ee- , f our - , or f i ve- wi r e cor d of r equi r ed si ze ( as i ndi cat ed i n t he cont r act document s) , i nst al l pl ugs t her eon, and at t ach t o equi pment . Pr ovi de UL l i s t ed pl ugs wi t h r ecept acl es, compl et e wi t h gr oundi ng bl ades. Wher e equi pment i s not avai l abl e, t ur n over pl ugs and cor d assembl i es t o t he Gover nment .

2. 14. 6 Range Recept acl es

NEMA 14- 50 conf i gur at i on, r at ed 50 amper es, 125/ 250 vol t s. Fur ni sh one mat chi ng pl ug wi t h each r ecept acl e.

2. 14. 7 Dr yer Recept acl es

NEMA 14- 30 conf i gur at i on, r at ed 30 amper es, 125/ 250 vol t s. Fur ni sh one mat chi ng pl ug wi t h each r ecept acl e.

2. 14. 8 Tamper - Resi st ant Recept acl es

Pr ovi de dupl ex r ecept acl e wi t h mechani cal s l i di ng shut t er s t hat pr event t he i nser t i on of smal l obj ect s i nt o i t s cont act s l ot s.

2. 15 PANELBOARDS

Pr ovi de panel boar ds i n accor dance wi t h t he f ol l owi ng:

a. UL 67 and UL 50 havi ng a shor t - c i r cui t cur r ent r at i ng as i ndi cat ed.

b. Panel boar ds f or use as ser vi ce di sconnect i ng means: addi t i onal l y conf or m t o UL 869A.

c. Panel boar ds: c i r cui t br eaker - equi pped.

d. Desi gned such t hat i ndi v i dual br eaker s can be r emoved wi t hout di st ur bi ng adj acent uni t s or wi t hout l ooseni ng or r emovi ng suppl ement al i nsul at i on suppl i ed as means of obt ai ni ng cl ear ances as r equi r ed by UL.

e. " Speci f i c br eaker pl acement " i s r equi r ed i n panel boar ds t o mat ch t he br eaker pl acement i ndi cat ed i n t he panel boar d schedul e on t he dr awi ngs.

f . Use of " Subf eed Br eaker s" i s not accept abl e unl ess speci f i cal l y i ndi cat ed ot her wi se.

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g. Mai n br eaker : " separ at el y" mount ed " above" or " bel ow" br anch br eaker s.

h. Wher e " space onl y" i s i ndi cat ed, make pr ovi s i ons f or f ut ur e i nst al l at i on of br eaker s.

i . Di r ect or i es: i ndi cat e l oad ser ved by each ci r cui t i n panel boar d.

j . Di r ect or i es: i ndi cat e sour ce of ser vi ce t o panel boar d ( e. g. , Panel PA ser ved f r om Panel MDP) .

k. Pr ovi de new di r ect or i es f or exi st i ng panel s modi f i ed by t hi s pr oj ect as i ndi cat ed.

l . Type di r ect or i es and mount i n hol der behi nd t r anspar ent pr ot ect i ve covering.

m. Panel boar ds: l i s t ed and l abel ed f or t hei r i nt ended use.

n. Panel boar d namepl at es: pr ovi ded i n accor dance wi t h par agr aph FI ELD

FABRI CATED NAMEPLATES.

2. 15. 1 Enclosure

Pr ovi de panel boar d encl osur e i n accor dance wi t h t he f ol l owi ng:

a. UL 50.

b. Cabi net s mount ed out door s or f l ush- mount ed: hot - di pped gal vani zed af t er f abr i cat i on.

c. Cabi net s: pai nt ed i n accor dance wi t h par agr aph PAI NTI NG.

d. Out door cabi net s: NEMA 3R r ai nt i ght wi t h a r emovabl e st eel pl at e 1/ 4 i nch t hi ck i n t he bot t om f or f i el d dr i l l i ng f or condui t connect i ons.

e. Fr ont edges of cabi net s: f or m- f l anged or f i t t ed wi t h st r uct ur al shapes wel ded or r i vet ed t o t he sheet st eel , f or suppor t i ng t he panel boar d f r ont .

f . Al l cabi net s: f abr i cat ed such t hat no par t of any sur f ace on t he f i ni shed cabi net devi at es f r om a t r ue pl ane by mor e t han 1/ 8 i nch.

g. Hol es: pr ovi ded i n t he back of i ndoor sur f ace- mount ed cabi net s, wi t h out si de spacer s and i nsi de st i f f ener s, f or mount i ng t he cabi net s wi t h a 1/ 2 i nch cl ear space bet ween t he back of t he cabi net and t he wal l surface.

h. Fl ush door s: mount ed on hi nges t hat expose onl y t he hi nge r ol l t o v i ew when t he door i s c l osed.

i . Each door : f i t t ed wi t h a combi ned cat ch and l ock, except t hat door s over 24 i nches l ong pr ovi ded wi t h a t hr ee- poi nt l at ch havi ng a knob wi t h a T- handl e, and a cyl i nder l ock.

j . Keys: t wo pr ovi ded wi t h each l ock, wi t h al l l ocks keyed al i ke.

k. Fi ni shed- head cap scr ews: pr ovi ded f or mount i ng t he panel boar d f r ont s

Apr i l 2019 Page 19 SECTI ON 26 20 00 on t he cabi net s.

2. 15. 2 Panel boar d Buses

Suppor t bus bar s on bases i ndependent of c i r cui t br eaker s. Desi gn mai n buses and back pans so t hat br eaker s may be changed wi t hout machi ni ng, dr i l l i ng, or t appi ng. Pr ovi de i sol at ed neut r al bus i n each panel f or connect i on of c i r cui t neut r al conduct or s. Pr ovi de separ at e gr ound bus i dent i f i ed as equi pment gr oundi ng bus per UL 67 f or connect i ng gr oundi ng conduct or s; bond t o st eel cabi net . I n addi t i on t o equi pment gr oundi ng bus, pr ovi de second " i sol at ed" gr ound bus, wher e i ndi cat ed.

2. 15. 2. 1 Panel boar d Neut r al s f or Non- Li near Loads

Pr ovi de i n accor dance wi t h t he f ol l owi ng:

a. UL l i s t ed, wi t h panel boar d t ype speci f i cal l y UL heat r i se t est ed f or use on non- l i near l oads.

b. Panel boar d: heat r i se t est ed i n accor dance wi t h UL 67, except wi t h t he neut r al assembl y i nst al l ed and car r y i ng 200 per cent of t he phase bus cur r ent dur i ng t est i ng.

c. Ver i f i cat i on of t he t est i ng pr ocedur e: pr ovi ded upon r equest .

d. Two neut r al assembl i es par al l el ed t oget her wi t h cabl e i s not acceptable.

e. Namepl at es f or panel boar d r at ed f or use on non- l i near l oads: mar ked " SUI TABLE FOR NON- LI NEAR LOADS" and i n accor dance wi t h par agr aph FI ELD

FABRI CATED NAMEPLATES.

f . Pr ovi de a neut r al l abel wi t h i nst r uct i ons f or wi r i ng t he neut r al of panel boar ds r at ed f or use on non- l i near l oads.

2. 15. 3 Ci r cui t Br eaker s

UL 489, t her mal magnet i c- t ype or sol i d st at e- t ype ( as i ndi cat ed i n t he cont r act document s) havi ng a mi ni mum shor t - c i r cui t cur r ent r at i ng equal t o t he shor t - c i r cui t cur r ent r at i ng of t he panel boar d i n whi ch t he ci r cui t br eaker wi l l be mount ed. Br eaker t er mi nal s: UL l i s t ed as sui t abl e f or t ype of conduct or pr ovi ded. Wher e i ndi cat ed on t he dr awi ngs, pr ovi de ci r cui t br eaker s wi t h shunt t r i p devi ces. Ser i es r at ed ci r cui t br eaker s and pl ug- i n c i r cui t br eaker s ar e unaccept abl e.

2. 15. 3. 1 Mul t i pol e Br eaker s

Pr ovi de common t r i p- t ype wi t h s i ngl e oper at i ng handl e. Desi gn br eaker such t hat over l oad i n one pol e aut omat i cal l y causes al l pol es t o open.

Mai nt ai n phase sequence t hr oughout each panel so t hat any t hr ee adj acent br eaker pol es ar e connect ed t o Phases A, B, and C, r espect i vel y.

2. 15. 3. 2 Ci r cui t Br eaker Wi t h Gr ound- Faul t Ci r cui t I nt er r upt er

UL 943 and NFPA 70. Pr ovi de wi t h " push- t o- t est " but t on, v i s i bl e i ndi cat i on of t r i pped condi t i on, and abi l i t y t o det ect and t r i p on cur r ent i mbal ance of 6 mi l l i amper es or gr eat er per r equi r ement s of UL 943 f or Cl ass A gr ound- f aul t c i r cui t i nt er r upt er .

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2. 15. 3. 3 Ci r cui t Br eaker s f or HVAC Equi pment

Pr ovi de ci r cui t br eaker s f or HVAC equi pment havi ng mot or s ( gr oup or i ndi v i dual ) mar ked f or use wi t h HACR t ype and UL l i s t ed as HACR t ype.

2. 15. 3. 4 Ar c- Faul t Ci r cui t I nt er r upt er s

UL 489, UL 1699 and NFPA 70. Mol ded case ci r cui t br eaker s: r at ed as i ndi cat ed. Two pol e ar c- f aul t c i r cui t - i nt er r upt er s: r at ed 120/ 240 vol t s. The pr ovi s i on of ( t wo) one pol e c i r cui t br eaker s f or shar ed neut r al c i r cui t s i n l i eu of ( one) t wo pol e c i r cui t br eaker i s unaccept abl e.

Pr ovi de wi t h " push- t o- t est " but t on.

2. 16 LOAD CENTERS FOR HOUSI NG UNI TS

Pr ovi de si ngl e- phase panel boar ds f or housi ng uni t s on t hi s pr oj ect i n accor dance wi t h t he f ol l owi ng:

a. Load cent er t ype, c i r cui t br eaker equi pped, conf or mi ng t o UL 67 and

UL 50.

b. Panel boar ds ser i es shor t - c i r cui t cur r ent r at i ng: 22, 000 amper es symmet r i cal mi ni mum f or t he mai n br eaker and t he br anch br eaker s.

c. Panel boar ds f or use as ser vi ce di sconnect i ng means: addi t i onal l y conf or m t o UL 869A.

d. Desi gned such t hat i ndi v i dual br eaker s can be r emoved wi t hout di st ur bi ng adj acent uni t s or wi t hout l ooseni ng or r emovi ng suppl ement al i nsul at i on suppl i ed as means of obt ai ni ng cl ear ances as r equi r ed by UL.

e. " Speci f i c br eaker pl acement " i s r equi r ed i n panel boar ds t o mat ch t he br eaker pl acement i ndi cat ed i n t he panel boar d schedul e on t he dr awi ngs.

f . Wher e " space onl y" i s i ndi cat ed, make pr ovi s i ons f or f ut ur e i nst al l at i on of br eaker s.

g. Pr ovi de cover wi t h l at chi ng door .

h. Di r ect or i es: i ndi cat e l oad ser ved by each ci r cui t i n panel boar d.

i . Di r ect or i es: i ndi cat e sour ce of ser vi ce t o panel boar d ( e. g. , Panel PA ser ved f r om panel MDP) .

j . Type di r ect or i es and mount behi nd i n hol der wi t h t r anspar ent pr ot ect i ve cover i ng on i nsi de of panel door .

2. 16. 1 Panel boar d Buses

Suppor t bus bar s on bases i ndependent of c i r cui t br eaker s. Desi gn mai n buses and back pans so t hat br eaker s may be changed wi t hout machi ni ng, dr i l l i ng, or t appi ng. Pr ovi de copper or al umi num bus bar s, ei t her t i n pl at ed or s i l ver pl at ed. Pr ovi de i sol at ed neut r al bus i n each panel f or connect i on of c i r cui t neut r al conduct or s. Pr ovi de separ at e gr ound bus i dent i f i ed as equi pment gr oundi ng bus per UL 67 f or connect i ng gr oundi ng conduct or s; bond t o st eel cabi net .

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2. 16. 2 Ci r cui t Br eaker s

UL 489 t her mal magnet i c t ype havi ng a mi ni mum shor t - c i r cui t cur r ent r at i ng equal t o t he shor t - c i r cui t cur r ent r at i ng of t he panel boar d i n whi ch t he ci r cui t br eaker wi l l be mount ed. Br eaker t er mi nal s: UL l i s t ed as sui t abl e f or t ype of conduct or pr ovi ded. Hal f - s i ze and t andem br eaker s ar e not accept abl e. Pr ovi de swi t ch dut y r at ed 15 and 20 amper e br eaker s.

Br eaker s must not r equi r e use of panel t r i m t o secur e t hem t o t he bus.

2. 16. 2. 1 Mul t i pol e Br eaker s

Pr ovi de common t r i p- t ype wi t h s i ngl e oper at i ng handl e. Desi gn br eaker such t hat over l oad i n one pol e aut omat i cal l y causes al l pol es t o open.

Mai nt ai n phase sequence t hr oughout each panel so t hat any t wo adj acent br eaker pol es ar e connect ed t o Phases A and B r espect i vel y.

2. 16. 2. 2 Ar c- Faul t Ci r cui t - I nt er r upt er s

UL 489, UL 1699 and NFPA 70. Mol ded case ci r cui t br eaker s: r at ed as i ndi cat ed. Two pol e ar c- f aul t c i r cui t - i nt er r upt er s: r at ed 120/ 240 vol t s. The pr ovi s i on of ( t wo) one pol e c i r cui t br eaker s f or shar ed neut r al c i r cui t s i n l i eu of ( one) t wo pol e c i r cui t br eaker i s unaccept abl e.

Pr ovi de wi t h " push- t o- t est " but t on.

2. 17 ENCLOSED CI RCUI T BREAKERS

UL 489. I ndi v i dual mol ded case ci r cui t br eaker s wi t h vol t age and cont i nuous cur r ent r at i ngs, number of pol es, over l oad t r i p set t i ng, and shor t c i r cui t cur r ent i nt er r upt i ng r at i ng as i ndi cat ed. Encl osur e t ype as i ndi cat ed. Pr ovi de sol i d neut r al .

2. 18 TRANSFORMERS

Pr ovi de t r ansf or mer s i n accor dance wi t h t he f ol l owi ng:

a. NEMA ST 20, gener al pur pose, dr y- t ype, sel f - cool ed, vent i l at ed.

b. Pr ovi de t r ansf or mer s i n NEMA encl osur e sui t abl e t o t he envi r onment , or as i ndi cat ed i n t he cont r act document s.

c. Tr ansf or mer i nsul at i on syst em:

( 1) 220 degr ees C i nsul at i on syst em f or t r ansf or mer s 15 kVA and gr eat er , wi t h t emper at ur e r i se not exceedi ng 115 degr ees C under f ul l - r at ed l oad i n maxi mum ambi ent of 40 degr ees C.

( 2) 180 degr ees C i nsul at i on f or t r ansf or mer s r at ed 10 kVA and l ess, wi t h t emper at ur e r i se not exceedi ng 115 degr ees C under f ul l - r at ed l oad i n maxi mum ambi ent of 40 degr ees C.

e. Tr ansf or mer of 115 degr ees C t emper at ur e r i se: capabl e of car r y i ng cont i nuousl y 115 per cent of namepl at e kVA wi t hout exceedi ng i nsul at i on rating.

g. Tr ansf or mer s: qui et t ype wi t h maxi mum sound l evel at l east 3 deci bel s l ess t han NEMA st andar d l evel f or t r ansf or mer r at i ngs i ndi cat ed.

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2. 18. 1 Speci f i ed Tr ansf or mer Ef f i c i ency

Tr ansf or mer s, i ndi cat ed and speci f i ed wi t h: 480V pr i mar y, 115 degr ees C t emper at ur e r i se, kVA r at i ngs of 37. 5 t o 100 f or s i ngl e phase or 30 t o 500 f or t hr ee phase, ener gy ef f i c i ent t ype. Mi ni mum ef f i c i ency, based on f act or y t est r esul t s: not be l ess t han NEMA Cl ass 1 ef f i c i ency as def i ned by NEMA TP 1.

2. 18. 2 Tr ansf or mer s Wi t h Non- Li near Loads

Pr ovi de t r ansf or mer s f or non- l i near l oads i n accor dance wi t h t he f ol l owi ng:

a. Tr ansf or mer i nsul at i on: UL r ecogni zed 220 degr ees C syst em. Nei t her t he pr i mar y nor t he secondar y t emper at ur e i s al l owed t o exceed 220 degr ees C at any poi nt i n t he coi l s whi l e car r y i ng t hei r f ul l r at i ng of non- si nusoi dal l oad.

b. Tr ansf or mer s ar e t o be UL l i s t ed and l abel ed f or K- Fact or r at i ng as i ndi cat ed i n accor dance wi t h UL 1561.

c. Tr ansf or mer s eval uat ed by t he UL K- Fact or eval uat i on: l i s t ed f or 115 degr ees C aver age t emper at ur e r i se onl y.

d. Tr ansf or mer s wi t h K- Fact or r at i ngs wi t h t emper at ur e r i se of 150 degr ees C r i se ar e not accept abl e.

e. K- Fact or r at ed t r ansf or mer s i mpedance: al l owed r ange of 3 per cent t o 5 per cent , wi t h a mi ni mum r eact ance of 2 per cent t o pr event excessi ve neut r al cur r ent when suppl y i ng l oads wi t h l ar ge amount s of t hi r d harmonic.

2. 19 MOTORS

Pr ovi de mot or s i n accor dance wi t h t he f ol l owi ng:

a. NEMA MG 1.

b. Her met i c- t ype seal ed mot or compr essor s: Al so compl y wi t h UL 984.

c. Pr ovi de t he si ze i n t er ms of HP, or kVA, or f ul l - l oad cur r ent , or a combi nat i on of t hese char act er i st i cs, and ot her char act er i st i cs, of each mot or as i ndi cat ed or speci f i ed.

d. Det er mi ne speci f i c mot or char act er i st i cs t o ensur e pr ovi s i on of cor r ect l y s i zed st ar t er s and over l oad heat er s.

e. Rat e mot or s f or oper at i on on 208- vol t , 3- phase ci r cui t s wi t h a t er mi nal vol t age r at i ng of 200 vol t s, and t hose f or oper at i on on 480- vol t , 3- phase ci r cui t s wi t h a t er mi nal vol t age r at i ng of 460 vol t s.

f . Use mot or s desi gned t o oper at e at f ul l capaci t y wi t h vol t age var i at i on of pl us or mi nus 10 per cent of mot or vol t age r at i ng.

g. Unl ess ot her wi se i ndi cat ed, use cont i nuous dut y t ype mot or s i f r at ed 1 HP and above.

h. Wher e f use pr ot ect i on i s speci f i cal l y r ecommended by t he equi pment manuf act ur er , pr ovi de f used swi t ches i n l i eu of non- f used swi t ches

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2. 19. 1 Hi gh Ef f i c i ency Si ngl e- Phase Mot or s

Si ngl e- phase f r act i onal - hor sepower al t er nat i ng- cur r ent mot or s: hi gh ef f i c i ency t ypes cor r espondi ng t o t he appl i cat i ons l i s t ed i n NEMA MG 11.

I n except i on, f or mot or - dr i ven equi pment wi t h a mi ni mum seasonal or over al l ef f i c i ency r at i ng, such as a SEER r at i ng, pr ovi de equi pment wi t h mot or t o meet t he over al l syst em r at i ng i ndi cat ed.

2. 19. 2 Pr emi um Ef f i c i ency Pol yphase Mot or s

Sel ect pol yphase mot or s based on hi gh ef f i c i ency char act er i st i cs r el at i ve t o t ypi cal char act er i st i cs and appl i cat i ons as l i s t ed i n NEMA MG 10. I n addi t i on, cont i nuous r at ed, pol yphase squi r r el - cage medi um i nduct i on mot or s must meet t he r equi r ement s f or pr emi um ef f i c i ency el ect r i c mot or s i n accor dance wi t h NEMA MG 1, i ncl udi ng t he NEMA f ul l l oad ef f i c i ency r at i ngs. I n except i on, f or mot or - dr i ven equi pment wi t h a mi ni mum seasonal or over al l ef f i c i ency r at i ng, such as a SEER r at i ng, pr ovi de equi pment wi t h mot or t o meet t he over al l syst em r at i ng i ndi cat ed.

2. 19. 3 Mot or Si zes

Pr ovi de si ze f or dut y t o be per f or med, not exceedi ng t he f ul l - l oad namepl at e cur r ent r at i ng when dr i ven equi pment i s oper at ed at speci f i ed capaci t y under most sever e condi t i ons l i kel y t o be encount er ed. When mot or s i ze pr ovi ded di f f er s f r om si ze i ndi cat ed or speci f i ed, make adj ust ment s t o wi r i ng, di sconnect devi ces, and br anch ci r cui t pr ot ect i on t o accommodat e equi pment act ual l y pr ovi ded.