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