answer
|
question
|
number
|
NEC
|
letter
|
description
|
n
|
1.
|
0.5
|
Annex D
|
a.
|
inches width of work spaces under 600 volts
|
c
|
2.
|
0.8
|
Ch9T1n7
|
b.
|
feet closest switch can be to inside wall of pool
|
q
|
3.
|
2'
|
605.4
|
c.
|
conduit fill result or more can round up
|
o
|
4.
|
3
|
408.18A
|
d.
|
maximum tap length
|
s
|
5.
|
3 1/2
|
110.26A1
|
e.
|
% fill for nipples maximum
|
t
|
6.
|
4
|
110.26A
|
f.
|
% fill for 2 conductors in a raceway
|
b
|
7.
|
5
|
680.22C
|
g.
|
amps or less use next higher overcurrent device
|
h
|
8.
|
6
|
440.64
|
h.
|
feet max length flex cord 208 240v room AC
|
k
|
9.
|
6 1/2
|
110.26E
|
i.
|
% derate for 4-6 conductors in a raceway
|
l
|
10.
|
8
|
820.44D
|
j.
|
% fill 3 conductors or more in a raceway
|
p
|
11.
|
9 1/2
|
830.44D1
|
k.
|
minimum head room where panel is installed
|
r
|
12.
|
10
|
440.64
|
l.
|
minimum CATV cable above roof
|
u
|
13.
|
11 1/2
|
830.44D2
|
m.
|
% fill 1 conductor in a raceway
|
w
|
14.
|
15 1/2
|
830.44D3
|
n.
|
or more is considered a major fraction
|
y
|
15.
|
20
|
820.100A4
|
o.
|
max distance top of switchboard to combustible ceiling
|
v
|
16.
|
23
|
552.44B
|
p.
|
broadband lead-in clearance over residential property
|
a
|
17.
|
30
|
110.26A2
|
q.
|
max length rubber cord to connect office partition
|
f
|
18.
|
31
|
Ch9T1
|
r.
|
max flex cord 120v room AC
|
j
|
19.
|
40
|
Ch9T1
|
s.
|
depth minimum working clearance 151-600v to grounded
|
m
|
20.
|
53
|
Ch9T1
|
t.
|
depth min working clearance 151-600v live both sides
|
e
|
21.
|
60
|
Ch9T1n4
|
u.
|
broadband clearance over car traffic
|
x
|
22.
|
75
|
366.56A
|
v.
|
min length cord for park trailer with cord entrance at side - 28
rear
|
i
|
23.
|
80
|
310.15B2a
|
w.
|
broadband clearance over heavy truck traffic
|
d
|
24.
|
100
|
240.21B4
|
x.
|
% fill auxiliary gutter at splice point
|
g
|
25.
|
800
|
240.4B
|
y.
|
CATV grounding conductor max length
|
|
|
|
|
z.
|
inches separation between covers of the NEC
|