Safety Clearance for Electrical Panel

Safety Clearance for Electrical Panel August 26, 2012 6 Comments

Safety Clearance for Electrical Panel:  Working Space around Indoor Panel/Circuit Board (NES 3122!:

"oltage

E#po$ed li%e E#po$ed li%e E#po$ed li%e part$ to part$ on ot* part$ to Not li%e &rounded part$ $ide$ part$( or (concrete' rick' grounded part$ ! and )all$!

Up to 150 V

0.914 Meter (3 Ft)

150 V to 600 V

0.914 Meter (3 Ft)

0.914 Meter (3 Ft)

0.914 Meter (3 Ft)

1.07 Meter Meter (3’6) (3’6) 1.22 Meter Meter (4 Ft)

 Clearance around an Indoor electrical panel (NES 11+2,!:

-e$cription of Clearance

!e"t to #$g%t t%e m$n$mum &'ern&e

-i$tance (.in!

0.9 Meter (3 Ft)

$stn&e *et+een ne' n- +''

1.0 Meter  

$stn&e *et+een ne' nCe$'$ng

0.9 Meter 

C'er e$g%t $n "ront o" ne'/40V

2.0 Meter 

C'er e$g%t $n "ront "ront o" ne' 40V

0.9 Meter (3 Ft)

C'ern&e %en F&$ng t%er 'e&tr$&' ne's  40V

0.9 Meter (3 Ft)

%e +$-t% o" t%e +or$ngsp&e $n "ront o" t%e ne'

%e +$-t% o" ne' or 0.762 Meter +%$&% $s reter.

e-room o" +or$ng sp&es "or   pne' *or-s (Up to 200Amp)

Up to 2 Meter 

e-room o" +or$ng sp&es "or   pne' *or-s (More t%n Up to 2 Meter( :" ne' %e$g%t $s m 2 Meter) 200Amp 8ne' %e$g%t $s m 2 Meter) e-room o" +or$ng sp&es "or   pne' *or-s (More t%n 200Amp 8ne' %e$g%t $s more t%n 2 Meter)

:" ne' %e$g%t $s more t%n 2 Meter t%n &'ern&e s%ou'- not 'ess t%n pne' e$g%t

ntrn&e For ne' (More t%n ne entrn&e re
erson' oor For ne' (More t%n 1200 Amp)

ersonne' -oor(s) $nten-e- "or entrn&e to negress "rom t%e +or$ng sp&e 'ess t%n 7.6 m "rom t%e nerest e-ge o" t%e +or$ng sp&e

e-$&te- 'e&tr$&' >p&e.

#ep&e $s +$-t% n- -ept% o" t%e ne' n- eten-$ng "rom t%e "'oor to  %e$g%t o" 1. m (6 "t) *o;e t%e e
%e -oor(s) s%'' open $n t%e -$re&t$on o" egress n- *e e
e
 Clearance for Conductor Entering in Panel (NES +0!:

-e$cription of Clearance

-i$tance (.in!

>p&$ng *et+een %e &on-u$t

 =ot r$se more t%n 75 mm (3 $n) *o;e t%e *ottom o"  or r&e+?s($n&'u-$ng t%e$r ent%e en&'osure "$tt$ngs) n- @ottom o" n&'osure

>p&$ng @et+een @ottom 200 mm

o" n&'osure n- :nsu'te- *us  *rs, t%e$r supports,

>p&$ng @et+een @ottom o"  n&'osure n- =on $nsu'te- *us  *rs

200 mm

 Clearance et)een Bare etal Bu$ ar in Panel (NES +0!:

"oltage

ppo$ite ppo$ite 7i%e Part$ Polarityounte PolarityW*ere to &round d on Sa.e 4eld 5ree in 6ir Surface

Up to 125 V 19.1 mm

12.7 mm

12.7 mm

125 V to 250 31. mm V

19.1 mm

12.7 mm

250 V to 600 50. mm V

25.4 mm

25.4 mm

 Clearance of utdoor electrical panel to 5ence/Wall (NES 11+31!:

"oltage

-i$tance (.in!

600 V to 13. V 3.05 Meter  13.  V to 230 V 4.57 Meter  A*o;e 230 V 5.49 Meter 

 Working Space around Indoor Panel/Circuit Board (NES 11+3!:

"oltage

E#po$ed li%e E#po$ed li%e E#po$ed li%e part$ to part$ on ot* part$ to Not li%e &rounded part$ $ide$ part$( or (concrete' rick' grounded part$ ! and )all$!

601 V to 2.5  V 0.914 Meter (3 Ft) 1.2 Meter (4 Ft)

1.5 Meter (5 Ft)

2.5  V to 9.0   1.2 Meter (4 Ft) V

1.5 Meter (5 Ft)

1. Meter (6 Ft)

2.5 Meter ( Ft)

9.0  V to 25  V

1.5 Meter (5 Ft)

1. Meter (6 Ft)

25  V to 75  V

1. Meter (6 Ft)

2.5 Meter ( Ft) 3.0 Meter (10 Ft)

A*o;e 75 V

2.5 Meter ( Ft)

3.0 Meter (10 Ft) 3.7 Meter (12 Ft)

 Clearance around an utdoor electrical panel (NES 11+31!:

-e$cription of Clearance Clear )ork $pace:

-i$tance (.in!

=ot 'ess t%n 2.0 Meter %$g%(Mesure-

;ert$&''? "rom t%e "'oor or p't"orm) or  not 'ess t%n 914 mm (3 "t) +$-e (Mesure- pr''e' to t%e e
 =onmet''$& or Met'Ben&'ose- n&'osure -oor or %$nge- &o;er s%'' *e ne' $n gener' pu*'$& n- t%e ept 'o&e-.  *ottom o" t%e en&'osure $s 'ess t%n 2.5 m ( "t) *o;e t%e "'oor or gr-e 'e;e'

 Ele%ation of 8nguarded 7i%e Part$ ao%e Working Space (NES 11+3E!:

"oltage

Ele%ation (.in!

600 V to 7.5 V 2. Meter  7.5  V to 35 V 2.9 Meter  A*o;e 35 V 2.9 Meter  9.5 mmDV

 Working Space for Panel (Code &eorgia Po)er Co.pany!:

"oltage

pose- '$;e posepose- '$;e  prts to '$;e prts on  prts to =ot '$;e roun-e- prts  *ot% s$-es  prts( or (&on&rete, *r$&, groun-e- prts ) n- +''s).

Up to 150 V

3.0 Meter  

3.5 Meter

4.0 Meter  

3.0 Meter   3.0 Meter

150 V to 600 V

3.0 Meter

3.0 Meter

4.0 Meter

5.0 Meter  

3.0 Meter

5.0 Meter

6.0 Meter  

5.0 Meter

6.0 Meter

6.0 Meter  

600 V to 2.5 V

2.5 V to 9 V

9 V to 25 V