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Publicidad
Idiomas disponibles
Idiomas disponibles
X
Catalog
Long Side
Number
Number of Openings
1
2
EJB100806
3-1/2
3
EJB121204
1-1/2
1-1/2
EJB121206
3-1/2
3-1/2
EJB121208
5
3-1/2
EJB161606
3-1/2
3-1/2
EJB161608
5
5
EJB181206
3-1/2
3-1/2
EJB181208
5
5
EJB241208
5
5
EJB241210
6
6
EJB241808
5
5
EJB241810
6
6
EJB242408
5
5
EJB242410
6
6
EJB361208
5
5
EJB361808
5
5
EJB361810
6
6
EJB362408
5
5
Consult Crouse-Hinds for proper space for installing and servicing fittings such as seals, unions, GUA's, etc.
*Maximum conduit size permitted in Group B locations is 4".
DRILLING AND TAPPING FOR ENTRIES
(ATEX Certified boxes must have all drilled and tapped entries
machined at Cooper Crouse-Hinds factory)
•
To comply with the NEC section 344.28, all conduit entries must
be provided with a smooth rounded entry into the enclosure. This
may be accomplished in various ways, including the use of
Crouse-Hinds RE reducers or by using LNR series conduit
liners.
The location and maximum sizes of conduit openings must be in
accordance with Table I.
•
Female conduit must be taper tapped with the thread form and
taper (3/4 in. per ft.) conforming to NPT. A standard NPT male
gage must enter the tapped opening 1-1/2 turns past the gage
notch. Openings are tapped deeper than standard NPT gage to
ensure a minimum of five full threads engagement with standard
NPT threaded conduit (refer to NEMA FB-1-4.01).
If more than four (4) conduit entries, or a mix of conduit entry
trade sizes are needed in any wall of the enclosure, use the
following instructions:
‡ These instructions can be used for Group B locations, provided no entry machined in the wall of the enclosure exceeds 4" trade size.
IF 931 • 08/08
Y
Long Side
Maximum* Size of Drilled and
Tapped Conduit Openings
3
4
1
1-1/2
1-1/4
3-1/2
1-1/2
1-1/4
1-1/2
1-1/2
1-1/4
3-1/2
1-1/2
1-1/4
5
2-1/2
2
3-1/2
3
2
5
3-1/2
2-1/2
3-1/2
3-1/2
2-1/2
5
5
3-1/2
5
5
3-1/2
6
5
3-1/2
5
5
3-1/2
6
5
3-1/2
5
5
3-1/2
6
5
5
5
5
5
5
5
5
6
5
5
5
Copyright © 2008, Cooper Industries, Inc.
Defined Area
Short Side
Number of Openings
2
3
4
2-1/2
1-1/4
3/4
1-1/2
1-1/2
1-1/4
3-1/2
1-1/2
1-1/4
3-1/2
1-1/2
1-1/4
3-1/2
2-1/2
2
5
3
2
3-1/2
1-1/2
1-1/4
3-1/2
1-1/2
1-1/4
3-1/2
1-1/2
1-1/4
3-1/2
1-1/2
1-1/4
5
3-1/2
2-1/2
6
3-1/2
2-1/2
5
5
3-1/2
6
5
3-1/2
3-1/2
1-1/2
1-1/4
5
3-1/2
2-1/2
6
3-1/2
2-1/2
5
5
3-1/2
TABLE 1
1. From Table 1, determine how many 5" conduit entries are
permitted on a side.‡ For example, a quantity of (4) 5" entries
are permitted on the long side of an EJB361808.
2. For each 5" conduit entry permitted‡, one may substitute a
quantity of smaller conduit entry trade sizes.
3. Some smaller enclosures cannot accept a 5" opening, in which
case, the maximum number of 3 1/2" or 1 1/2" conduit openings
must be determined (again, using Table 1).
4. Use Table 2 to determine how many of the smaller conduit
entries may be substituted for either the 5", the 3 1/2" or the
1 1/2" trade size. Use Table 3 for minimum spacing of conduit
entries.
Basis of
Substitution
5"
3
1
/
"
2
1
1
/
"
2
Number and size of smaller conduit entries which may be substituted for
Z
Short Side
Outlined Dimensions
Defined Area
A
B
C
1-1/8
1-3/4
1-1/4
1-1/8
1-3/4
1-1/4
1-1/8
1-7/8
1-1/4
1-1/8
1-7/8
1-1/4
1-1/8
2
1-1/4
1-1/8
2
1-1/4
1-1/8
2
1-1/4
1-1/8
2
1-1/4
1-7/16
2
1-3/8
1-7/16
2
1-3/8
1-7/16
2-5/8
1-3/8
1-7/16
2-5/8
1-3/8
1-7/16
2-11/16 1-3/8
11-7/16
2-11/16 1-3/8
1-7/16
2
1-3/8
1-7/16
2-13/16 1-3/8
1-7/16
2-5/16
1-5/8
1-7/16
3-1/4
2
1
3
1
1
/
"
/
"
1"
1
/
"
1
/
"
2
2
4
4
2
9
7
7
4
3
2
5
4
3
2
1
1
2
2
1
1
1
0
TABLE 2
5" or 3 1/2" entries.
X
Dimensions
Defined Area
X
Y
Z
4.46
9.25
7.25
2.38
11.31
11.31
4.32
11.13
11.13
6.38
11.06
11.06
4.19
15.13
15.13
6.19
15.06
15.06
4.23
16.50
10.50
6.22
16.44
10.44
5.97
23.43
11.43
7.97
23.36
11.36
5.85
23.08
17.06
7.85
23.01
17.01
5.85
23.08
23.08
7.85
23.01
23.01
5.92
34.97
10.97
5.83
35.08
17.08
8.29
35.40
17.40
5.56
35.05
23.05
1
1
2
/
"
3"
3
/
"
4"
5"
2
2
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
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