S9407-AB-HBK-010 Datasheet, PDF (219/276 Pages) Glenair, Inc. – HANDBOOK OF SHIPBOARD ELECTROMAGNETIC SHIELDING PRACTICES

S9407-AB-HBK-010, Rev. 2
3.6.2 Lengths. Conduit shall be furnished in the length or lengths specified by the procuring activity
(see 6.2).
Table I. Conduit dimensions (inches).
Conduit
size
(nom)
1/4
Conduit
size
code
02
3/8
03
1/2
04
5/8
05
3/4
06
1
08
1-1/4
10
1-1/2
12
2
16
2-1/2
20
3
24
ID
(min)
0.245
0.370
0.495
0.620
0.745
0.995
1.245
1.495
1.995
2.495
2.995
Type 1 (nonjacketed)
Part
OD
number (over braid)
EM02 0.42 ±0.01
EM03 0.54 ±0.01
EM04 0.69 ±0.01
EM05 0.82 ±0.01
EM06 0.94 ±0.01
EM08 1.25 ±0.01
EM10 1.50 ±0.01
EM12 1.75 ±0.01
EM16 2.28 ±0.015
EM20 2.78 ±0.015
EM24 3.28 ±0.015
Type 2 (jacketed)
Part
OD
number (over braid)
EM02R 0.58 ±0.04
EM03R 0.70 ±0.04
EM04R 0.85 ±0.04
EM05R 0.98 ±0.04
EM06R 1.10 ±0.04
EM08R 1.41 ±0.04
EM10R 1.66 ±0.04
EM12R 1.91 ±0.04
EM16R 2.44 ±0.045
EM20R 2.94 ±0.045
EM24R 3.44 ±0.045
Minimum
bend radius
(inside)
1-1/4
2
2-1/2
3
3-3/4
5
6-1/4
7-1/2
10
12-1/2
15
3.6.3 Seams and joints. Seams in the metal tubing shall be welded or brazed, and there shall be no
reduction of the inside diameter or increase of outside diameter due to such welding or brazing.
Joints (or splices) in the metal tubing shall be welded or brazed, and there shall be no increase in the
outside diameter due to such welding or brazing. The coupling ring used for joining lengths of tubing
shall not reduce the inside diameter at the joint more than 0.028 inches (maximum wall thickness of
coupling ring inside the tubing shall be 0.014 inches). Material for the coupling ring shall be in
accordance with 3.5.1. Seams and joints shall meet the requirements for inner surfaces specified in
3.6.4 and for watertightness specified in 3.7.1.
3.6.4 Inner surfaces. The metal tubing shall have smooth inner surfaces free of sharp burrs or
edges that could abrade cable insulation. The interior shall be free also of particles of organic or
metallic material that could contaminate or degrade cable insulation or be potentially corrosive.
3.6.5 Braid. The braid shall be woven from stainless steel wire as specified in 3.5.4. The braid
shall be applied with sufficient tension so that there will be no looseness or bunching of the braid on
the tubing. The braid shall provide a coverage of at least 90 percent of the tubing, as determined by
the method of 4.6.3. Unless otherwise specified, only one layer of braid shall be applied.
3.6.6 Rubber jacket. The rubber jacket for Type 2 conduit shall be of a uniform thickness and free
from pitting, and shall be applied with sufficient stretch around the circumference of the conduit to
maintain a tight fit over the conduit braid. The wall thickness for the rubber jacket shall be 0.080
±0.015 inches for all conduit sizes.
D-5