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QCVN 12:2014/BXD
QUY CHUN K THUT QUC GIA V H THNG IN CA NH V NH CNG CNG
National Technical Regulation on Electrical Installations of Dwelling and Public Buildings
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2-1-14-TX.Dn" / !F (7n E`n" &M- .Dn" 28n (7n nJ& !un" ! !0! Mn" !j (7n -, 6./n" Mn" !j vn" ./! Ou0 E,n Wn" -D( !vn" uF- &w( Mn" !j vn" ./! Ou0 4 #
2-1-14-RT(?- E !(?u 0n" !g n5 :(r
e CJ M X( p / 6%( !vn" '(7! nJ& Pn" '5 !vn" -Xn -q Ouy n -%( $3 63! C
Ee x 23n" !0! E(7n 0 %n !? !J( 6J :n i% -q Ouy n -%( $3 63! h#
2-1-14-S$:( E, -X; .Dn" 28n (7n X(n" E(7- ! -n" &0y '5 -n" !u,n -< -g n ,( (7n!;n \! -< -g (7n 25n X(n" ! -n" &0y '5 -n" !u,n#
2-1-14-$:( "@n -(?- E -[ Mn" ,n" !? &c! n._! '5 &%! ()u (]n Mn" !j (7n !g&0y Ej& n._! '5 E] -pn" !c#
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2-1-14-WC0! 7 -,n" -vn" "(J ()u P vn" ; un n._! nJn" E`n" (7n -X| :( ./!!F (7n -X[! -(? E`n" !0! .Dn" 28n (7n X(n" -< -g n ,( (7n '5 :( !J -(?- E E: '7!@- (7n -[ Mn"#
2-2 H 87n; n7i _8 3A >OP >n E 3
2-2-1 COP >n n7i _8
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BEn; 1 p Ti8 >in n n_8 5 =q= 5IJ >OP >n n7i _8 5n 8bn; _8
hy 28n n,( F- CJ E: '7 ') !j Kvn" !J E: '7 ') !j
CJ E: '7 !,n" }n&Pn
+> &&+,( '_( 2y Wn"
1Z &&+,( '_( 2y -
1 &&+,( '_( !: 2y Wn" '5 2y-
Kvn" !J E: '7 !,n"}n &Pn
+> &&+,( '_( 2y Wn"
>Z &&+,( '_( 2y -
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2-2- Yhu 5u 7i 3fi >OP r
2-2--1hy $k :( 0 cn" !0! yu !^u u yr
e hy $k :( ./! E: '7 !,n" !0! . ln" ') !j J '5 (7n J !u ./! !0! 6[! Mn"(7n '5 -0! Mn" n(7- -Xn" &( ()u (7n 65& '(7!
Ee TXn 2y $k vn" ./! \- -(?- E Jn" !@- '5 vn" ./! E, -X; !0! &,( n,( -X< !0! &,(
n,( !J -] -0! E`n" 23n" !3 !uyn 2pn"!e Kvn" ./! 2pn" 'l (& 6%( !g -(?- E 65& &M- ^n !g 2y $k ! !0! -(?- E 0!
2e C0! &,( n,( !g 2y $k :( ./! -(? !n 2R 25n" ] (]& -X '5 -a n"(7& -X< !0! &,(n,( ./! E! ;n \! 6F ^y E`n" !F- Mn
e K( (]& -X -vn" &%! !g 7 -,n" n,( F- vn" ./! &@! n,( -(? !0! -(?- E !uyn2pn" dn. EM -0! Mn" !:& E(?n !uMn 2ye '5 2y $k
qe T(?- 2(7n !g 2y $k vn" nl jn !0! -X , Ouy n -%( L:n" +#
BEn; 2 p Ti8 >in n n_8 5 =q= 5IJ >OP r
Ti8 >in 5IJ >OP>n =J s
&&+
Ti8 >in n n_8 5 =q= 5IJ >OP r 89n; tn;
&&+
DOP r n; n; DOP r n; 8q=
o 1 o 4o
1 o 4> 1 41
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e hy 28n -Xn" !0 n()u XuM-
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!e hy 28n ] -X^n 6@ !, n \! 2y 28n !J 'l !0! (7n
2e Vl !0 \! un" -g (7n E`n" (& 6%( 6._( E! !0 'l - !g !0 2y - E7n 2y28n Wn" -X3! ,n" (& 6%( 0 cn" Wn" -D( !0! yu !^u ur
f T;n 6(n -3! ') (7n ./! :& E: E`n" !0! ?- !Fu \! Fu n,( -;! / !,n" ./! .ln" ') !j !n" n. }n &Pn (7n J
f Fu n,( ./! '_( !0! 2y $k 0! | (]& n,( 2y ./! i0! n -X._!
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e +> &&+! 2y 28n !J E: '7 !j
Ee 9 &&+! 2y 28n vn" !J E: '7 !j#
2-2--4hy $k 2pn" !un" ! n()u &%! (7n - -(?- 2(7n nl nF- ! :( i0! n-q L:n" 4 '_( 2Pn" (7n [ !, '5 -D( "(n -Wn -%( cn" '_( iun" 6./n" n(7- dI+i -e 6_n nF-#
2-2--Kvn" ./! 2pn" !0! EM n (& 6%( 2._( y 65& 2y $kr
e n" n._!
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!e C0! EM n ?- !Fu !u cn" uF- !j ( 65& '(7! En -.Dn"
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2e n" EM n !J -] u,n i@n ./! d-X< ( ./! -(?- ? ! !0! &3! ;! Je
e G(0 2y 2y -Xq 2y 28n#
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2-2--SN?u 2pn" -(?- E E: '7 Ou0 2Pn" ] E: '7 !,n" (7n "(- - 2y $k :( n`& -Xn"
!pn" .Dn" 28n '_( 2y -:( (7n#2-2-R Yhu 5u 7i 3fi >OP >n ihn [8 E 3
2-2-R-1hy 28n 6(n ?- E: '7 n,( '_( -n n,( F- !;n :( !J -(?- 2(7n vn" nl jnr
e &&+,( '_( 2y Wn"
Ee >Z &&+,( '_( 2y -#
2-2-R-2hy 28n 6(n ?- E: '7 n,( "(= ( 'l (& 6%( !g -(?- E :( !J : n}n" 28n (7nE`n" \! 6_n jn : n}n" 28n (7n !g 2y $k !J : n}n" 28n (7n nl nF- n,( '_( !0! 'l-(?- E J#
2-2-R-@hy 28n 6(n ?- E: '7 n,( "(= 'l (& 6%( !g -(?- E '_( !0! '- 28n En n"5( :( !J: n}n" 28n (7n vn" nl jn 1s+ : n}n" 28n (7n !g 2y $k -.jn" cn"#
2-@ CZ5 3? Jn 8An
2-@-1 Ti8 Z 5#
2-@-@ Yhu 5u 3 go >?n; 5
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2-@-4-1hPn" (7n n &c! !g -(?- E E: '7 vn" ./! nl jn 2Pn" (7n 65& '(7! 6u 25(6_n nF- !g &%! (7n#
2-@-4-2T(?- E E: '7 :( !J : n}n" !@- ./! 2Pn" n"@n &%! 6_n nF-#
2-@- C]8 in [wn 5_=
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2-@--1%! (7n !g 2! '3 n -5n :( M! 6 '_( !0! &%! 0!#
2-@--2K( -(?- E ./! !F (7n -< ( n"uWn 0! nu - [ !, iuF- (7n -Xn" &%! !gn"uWn n5y vn" ./! "y :n .|n" iFu ?n E: '7 !,n" (7n "(- \! %- Mn" n" !gn"uWn (# T(?- E !J 2y $k - 2y $k n5y :( ./! n,( '_( 2y $k !g !: ( &%!#
2-@[email protected]" / !@- Ou0 -:( 65& &F- n"uWn !F (7n !J -] "y X &,( n"uy (]& 6_n jn --(?- E E: '7 !,n" Ou0 -:( vn" ./! -[ Mn" !@- n"uWn (7n &5 :( !J E(7n 0 -q 2([ iuF- (7n !g Ou0 -:( ] @! 3!#
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2-@--T(?- E E: '7 !,n" Ou0 2Pn" :( ./! !n '5 6@ \- ! vn" ] Ou0 2Pn"-Xn" &M- &%! 65& :n .|n" ?n %- Mn" n" !g &%! 2pn" ! 2! '3 n -5n#
2-@--RTg (7n !g 2! '3 n -5n :( ./! !0! 6y l( !0! -5n ^n !g 7 -,n" (7nEn -.Dn" '5 :( :& E: : n}n" !u !0y -Xn" -D( "(n Ouy n#
2-@--S%! (7n !g 2! '3 n -5n vn" ./! ( Ou !0! ' -X; !J Xg( X !0y -X< ( nJ ./!
65& -< '- 6(7u vn" !0y \! ./! E: '7 -;! /# TXn" &( -X.Dn" / &%! (7n vn"./! ( Ou u '[! !J Xg( X nb#
2-@--$.jn" -(7n Jn" !@- '5 ()u (]n :( ./! 6@ -5n nJ& 2R 25n" nn E(?- ./!\- -%( u '[! &5 !* n=n" n".D( !J -X0! n(7& &_( ./! -(? !n#
2-@--WC0 !g &%! (7n 2pn" ! 2! '3 n -5n vn" :( 6%( !,n" !0y \! !,n"n(Ru :( ./! !0! 6y '_( !0! !0 !g &%! 0! ] !: !0 !g &%! n -5n 0! E`n":n" !0! \! '- !@n# $:( a 23n" !0 !u !0y p / '_( Ouy n -%( &3! +#1# ]6@ \- ! :& E: M E)n n(7- '5 !j !^n -(?-#
2-@--10Kvn" ./! 6@ \- !0! &%! (7n 2pn" ! 2! '3 n -5n -Xn" n" -n" &0y\! !0! 6%( ,n" -vn" j( -vn" J( -X< !0! !0 2pn" ! -n" &0y !cu M ( i:y X !0y\! -n" &0y !J yu !^u \! E(7-#
2-@--11{n !(?u 0n" zn !F &5 En -.Dn" vn" %- Mn" :( -[ Mn" %- Mn" (!J [ !, | &%! !F (7n En -.Dn" -Xn" u '[! \- {n# V(7! !uy]n b( -< !? M En-.Dn" n" !? M zn !F :( ./! -[! (7n -[ Mn" ( (7n 0 n"uWn En -.Dn" -Fjn Z (7n 0 2n n -Xn" -D( "(n './- Ou0 Z> '5 -[ Mn" -X| ') !? M En -.Dn"( (7n 0 !g n"uWn En -.Dn" 6_n jn S> (7n 0 2n n#
2-@--12N"uWn (7n a 23n" ! !(?u 0n" zn !F :( ./! (]& 0- -%( -g n ,(# Quyn n5y vn" 0 23n" ! (n @!Ou( -[ n%#
2-@--1@TXn" 7 -,n" !(?u 0n" zn !F !0! 6%( {n :( -.jn" -;! '_( -D( "(n !uy]nb( ] 2uy -X &c! !(?u 0n" Ouy n#
2-@--14T%( ' -X; Jn" !@- -Xun" -& :( 6@ \- -(?- E "(0& 0- '5 ()u (]n n"uWn !F (7n#
2-@--1G(0 -X M X( nl nF- !(?u 0n" zn !F -Xn E) &\- 6,( ( '5 !^u -n" :( %- Z>6i | !0! "(n Pn" !0! u '[! ] &| :( %- Z+ 6i#
2-4 BE 3 57n; in ;i`8
2-4-1 Yhu 5u 3 E 3 57n; in ;i`8 > 8i= de5 8b^5 8i=
$:( a 23n" &M- -Xn" !0! E(7n 0 u yr
2-4-1-1L E! 5n -5n !0! EM n &n" (7n E`n" '- 6(7u !0! (7n %- -(u !uzn ! !* -0 " X ./! E`n" !0! 0 gy#
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2-4-1-2hpn" X5 !@n \! 'l E! 6@ !, n !@! !@n :& E: M E)n !j ./! !0! 6y '_(!0! ^n !J (7n p / '_( ()u (7n 65& '(7! En -.Dn" !J i- ?n !0! :n .|n" -< Enn"5( '5 :( a 23n" ?n 23n" !3 \! ! J &_( !J -] -0 X ./! '5 !J !F E: '7-F nF- 65 I$ttL \! I$+t ] n"}n n"
f >Z 65 "(0 -X (7n 0 n -5n -;n E`n" 'vn dVe ./! !F nn -Xn" ()u (7n En -.Dn"#
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e w( n"uWn !0! 6y '_( F- !* ./! !F ! &M- -(?- E a 23n" (7n
Ee %! (7n -0! E(7- :( ./! !F -< n"uWn (7n !0! 6y '_( F- '5 (7n 0 !g &%! (7n-0! E(7- vn" ./! './- Ou0 >ZZ V
!e Kvn" ./! n,( !0! EM n &n" (7n !g &%! (7n -0! E(7- | EF- (]& n5 '_( !0!&%! 0! \! '_( F- \! 2y $k
2e C0 '5 2y &)& !g &%! (7n :( :& E: : n}n" (]& 0- ./! E`n" &@- -Xn u,-!()u 25( !J n"uy !j E . ln" ') !j
e $:( a 23n" 7 -,n" .Dn" 28n (7n X(n" ! !0! &%! (7n -0! E(7-
qe TX.Dn" / a 23n" !0! 2y 28n !g !pn" &M- .Dn" 28n (7n ! &%! (7n -0! E(7- '5!0! &%! (7n 0! - :( a 23n" !0 n()u XuM- vn" E! E`n" (& 6%( \! a 23n" !0!2y 28n !0! (7n n`& -Xn" ,n" 7 -,n" .Dn" ,n" \! M !0! (7n 0 cn" !0! ()u(7n ur
f C0! (7n !0! 2y 28n :( 0 cn" (7n 0 2n n ! nF- !J -Xn" /( !0
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2--2 Yhu 5u 7i 3fi E 3 57n; 5
8i8 Z in 3A >OP >n in ;OP bJ
2--2-1T(?- E (7n !J : n}n" -% X n(7- M E) &\- "y n"uy (]& !0y ! !0! '- 6(7u '-23n" 6()n ) ( -(?- ? 6@ \- !, n :( -un -g &M- -Xn" !0! yu !^u u yr
e \- | -Xn E7 \! -Xn" 'l 65& E`n" '- 6(7u !u ./! n(7- M &5 -(?- E (7n J -% Xvn" !0y !J M 28n n(7- -F '5 g M E)n !j
Ee ./! !0! 6y l( !0! '- 6(7u '- 23n" 6()n ) \! !0! ^n -a 0! E`n" '- 6(7u !u ./!n(7- M &5 -(?- E (7n J -% X vn" !0y !J M 28n n(7- -F '5 !J !()u 25y g M E)n!j
!e :& E: :n" !0! g 6_n ?n !0! '- 6()n ) \! !0! ^n -a 0! ! -l n(7- n-5n# ( .jn" -(7n -(?- E (7n !J : n}n" -% n(7- M E) &\- )u :( !J M 28n n(7--F#
2--2-2K( -(?- ? 6@ \- 7 -,n" (7n n5 :(r
e oa 23n" 6%( 2y 28n !J -(?- 2(7n p / '_( Ouy n -%( &3! +#1#> '5 &c! -:( 2Pn" (7n p/ '_( Ouy n -%( &3! +#1#9#+
Ee oa 23n" Ch !J 2Pn" -0! Mn" -,( 65 Z> A
!e :& E: -.jn" -;! '_( !0! ()u (7n &v( -X.Dn" -;n !F- a 23n" \! (]& (?n -X! !gn5 '5 !0! yu !^u ') B -u- n -5n Pn" !,n" !0y# n=n" nj( !J n"uy !j !0y !.Dn" 28n (7n '5 .jn" 0 6@ \- :( p / '_( !0! yu !^u Ouy n -%( !0! &3!+#1#+ +#1#4#+ '5 +#1#9#+#
2--2-@T(?- E (7n 2y 28n (7n !J : n}n" -% W Oun" \! -( 6a (7n -Xn" 'n 5nEn -.Dn" ( n,( !, n :( 0 cn" &M- -Xn" !0! yu !^u ur
e L! ;n -5n EM -Xn" '- 6(7u !u ./! W Oun" -( 6a (7n vn" !0y !J M 28n n(7--F '5 !J g M E)n !j
Ee C0! 6y l( '- 23n" \! !0! ^n -a !g n5 E`n" '- 6(7u !u ./! W Oun" -( 6a(7n vn" !0y !J M 28n n(7- -F '5 !J g M E)n !j
!e m@ \- '_( &M- :n" !0! g :& E: 2 ./! W Oun" -( 6a (7n#
2--2-4T(?- E (7n !J : n}n" "y X -n -X%n" - -Xun" n(7- \! -;! -3 n(7- :( !J:n" !0! g 6_n ?n !0! '- | 6()n ) \! !0! ^n -a !g n5 ] -Xn" ()u (7n 'n 5nEn -.Dn" vn" -% X n(7- M n"uy (]& ! !0! '- '5 ^n -a !g n5#
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Ee Kvn" ./! n`& -Xn" %& '( "(_( %n -] -;! -Xn" -^& '_( -X< ( ./! E: '7 !,n" !0!. ln" !j !J -] i:y X ( -0- (]&
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2e Kvn" ./! a 23n" !0! E(7n 0 E: '7 !,n" -(? i! "(0n -(? E`n" 5n -.Dn" vn"28n (7n '5 E`n" 'Pn" n" -? vn" n,( F-#
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2-10-4-RTXn" 'pn" 1 vn" ./! \- !0! -(?- E (7n -X< ^n -a "( n(7- (n j( \! &0yun nJn" (n j(# TXn" 'pn" 4 -(?- E 6@ \- :( !u ./! n(7- M ;- nF- 65 1+> C '5 6_!0! (7n !g 2y 28n :( !u ./! n(7- M ;- nF- 65 1Z C#
2-10-4-STX.Dn" / E@- EuM! :( \- -Xn" !0! 'pn" 1 '5 4 - .Dn" 28n (7n :( !u ./!n(7- M Ouy n -%( &3! +#1Z#9# !0! ,n" (& 6%( '5 'l (& 6%( !g !0 :( ./! -(?- ? '56@ \- ] vn" -] !%& '5 ( 65& '(7! En -.Dn"#
2-10-4-C0! -(?- E Jn" !@- '5 ()u (]n :( 6@ \- n"5( Pn" (n j( \! !E(n (nj( -X< -X.Dn" / !0! -(?- E Jn" !@- '5 ()u (]n n5y 65 &M- EM n !g ^n -a "( n(7-(n j( \! &0y un nJn" (n j( \! !g !0! -(?- E 0! 6@ !, n -Xn" 'pn" + -q._n" 28n !g n5 !? -%#
2-10-4-WKvn" ./! E, -X; b !@& (7n En -Xn" Pn" (n j(#
2-10- Yhu 5u 7i 3fi [u 3^5 P 8
2-10--1H7 -,n" (7n n5 -%( !0! u '[! y -? d65 nj( ] -(? nn -}& 0& != -X ia 6-z& &B -q 2( '5 !}& J! E7n nne '5 !0! E7n '(7n - y :( 0 cn" !0! yu !^u ')n -5n (7n# Quy n n5y vn" 0 23n" ! !0! -(?- E (7n y -?#
2-10--2$:( -[! (7n !0! E(7n 0 ] E: :& n -5n (7n ! E nJ& !g u '[! y -?"W&r
e NJ& Z 65 u '[! y -? vn" a 23n" EM n 0 0- d65 EM n !g -(?- E (7n y -? ( 65&'(7! En -.Dn" nF- -(?- :( -(? i! '- 6 '_( E7n nn \! !J -] . '5 -(? i! '_(E7n nn \! E7n nn !^n !%& '5e#
Ee NJ& 1 65 u '[! y -? !J a 23n" !0! EM n 0 0- En n"5( !j -] E7n nn \! .u '5 EF- EM n n5 !g !j -] E7n nn
!e NJ& + 65 u '[! y -? !J a 23n" EM n 0 0- ! n=n" !vn" '(7! &5 n?u &F- (7n "y X n"uy (]& ?n -;n &%n" !g E7n nn#
2-10--@H7 -,n" (7n n5 -%( u '[! y -? :( 0 cn" yu !^u !uy]n b( !0! 3 -:( .u -(n-< n"uWn (7n En -.Dn" n" n"uWn (7n 2[ Pn"#
2-10--4L(7n 0 :& E: n -5n
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Ee TX.Dn" / a 23n" okmV '5 $kmV -Xn" !0! u '[! !0! nJ& 1 '5 + - (7n 0 2n n!g !0! -(?- E (7n vn" ./! './- Ou0 +> V# TXn" !0! u '[! nJ& + !0! 'l (& 6%( !g-(?- E :( n,( '5 'Pn" n" -?#
!e L(7n 0 E: '7 E`n" '- !:n '5 E`n" !0! \- n"5( "(_( %n -] -;! -Xn" -^& '_( vn"./! 0 23n"#
2e G(_( %n (7n 0 n -5n ./! !F nn vn" 6_n jn +> V#
e %! (7n !u,( !pn" !g j W TNfo -Xn" u '[! -uM! nJ& 1 '_( 2Pn" (7n ?n 4+ A :(!J Ch '_( 2Pn" (7n -0! Mn" vn" 6_n jn 4Z &A# TXn" !0! u '[! -uM! nJ& + vn"./! 2pn" Ch '_( 2Pn" (7n -0! Mn" vn" Ou0 4Z &A -X< !0! &%! (7n !F ! E5n &b!0! -(?- E t Oun" 2( Mn" ./! . '5 u '[! -uM! nJ& + !0! -(?- E !J !vn" uF- 2n
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n 6_n jn > VA !0! -(?- E vn" Oun -Xn" dvn" 6(n Oun ?n 2uy -X [ ,n" !g !nn".D(e#
TXn" !0! u '[! -uM! !0! nJ& 1 '5 + vn" ./! 2pn" !0! Ch n"5( 6%( A '5 L
qe ,( '_( j W TTr TXn" !0! u '[! -uM! !0! nJ& 1 '5 + :( -[! (7n &( Ouy n nu-%( (]& '5 -Xn" -F- !: !0! -X.Dn" / J )u :( 2pn" Ch
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w( nJ& Pn" !J !pn" &M- !c! n}n" :( 2pn" &M- j W IT X(n" E(7-# TXn" j W IT :(!J -(?- E "(0& 0- !0! (7n 0 cn" !0! yu !^u ur
f Tbn" -X| iy !()u !g -(?- E "(0& 0- vn" ./! nl jn 1ZZ
f (7n 0 !g -(?- E "(0& 0- vn" ./! 6_n jn +> V &M- !()u
f hPn" (7n n"y !: ( !J [ !, !n" vn" ./! 6_n jn 1 &A
f K( (7n -X| !0! (7n !g &%! (7n ./! "(0& 0- "(:& iu,n" !Pn >Z - -(?- E "(0& 0-:( !:n E0 :( !J -(?- E ] i0! n ' -X; . ln" !0! (7n#
w( j W IT 2pn" -Xn" u '[! y -? :( !J -;n (7u !:n E0 E`n" & -n '5 0n 0n" \--%( !w nn '(n !g jn ' y -? !J -] "(0& 0- ./! :( !J EM n (]& 0- Ou0 -:( '5n(7- M &0y E(?n 0 !uyn 2pn" ! y -? -Xn" j W IT
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2-10--R V(7! (]& -X ( . '5 a 23n" '5 (]& -X n -[! (7n -q &3! 1Z# !gTCVN 99ff1Zr+ZZ#
2-10-R Yhu 5u 7i 3fi 8bJn; Z in 5 5iu g
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f G(0& 0- 6(n -3! 2Pn" (7n !g !0! {n
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2-10-R-@H7 -,n" .Dn" 28n (7n ! !(?u 0n" E`n" kmV :(r
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2-10-R-T(?- E !0! 6y Jn" !@- E: '7 '5 !0! -(?- E 0! a 23n" -Xn" 7 -,n" !(?u 0n"
E`n" kmV :( 0 cn" !0! yu !^u ure L, -X; | ' -X; 2R -(? !n
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2pn" (7n '_( !0! &%! (7n 0! '5 '_( F- K?- Ou: vn" ./! -F jn -X , Ouy n -%(L:n" #
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E: '7 Eb un"#@-@-$:( -[! (7n (]& -X !0! ()u (7n !g E(7n 0 E: '7 E`n" !0! -[ Mn" !@- n"uWn!F (7n ] !,n" -(? i! -X[! -(? n. ur
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CH~ THCHr o 65 E) &\- !J n".D( %- Mn"#
Hmn H-1 p X && d'; 23 n. 23n" !3 (n ';- e
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9f ./! E: '7 !,n" 2Pn" n._! Xj( -q &( ._n"
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Hmn N-R p KF5 89f5 5
