May 26, 2011

Conduit Classification Codes

You might notice that, for a conduit there is coded printed on its surface.

Those coded are actually the BS Standard (BS EN 50086) whereby it indicates the technical data for the conduit itself. In general, there are 6 (six) digits being used. Each digit will represent its own descriptions.

1st Digit
Resistance To Compression
Code
Duty
Newton
0
Non-declared
-
1
Very Light
125
2
Light
320
3
Medium
750
4
Heavy
1250
5
Very Heavy
4000

2nd Digit
Resistance To Impact
Code
Duty
Joule
0
Non-declared
-
1
Very Light
0.5
2
Light
1
3
Medium
2
4
Heavy
6
5
Very Heavy
20

3rd Digit
Minimum Service Temperature
Code
Temperature
1
+5oC
2
-5oC
3
-15oC
4
-25oC
5
-45oC

4th Digit
Minimum Service Temperature
Code
Temperature
1
+60oC
2
+90oC
3
+105oC
4
+120oC
5
+150oC
6
+250oC
7
+400oC

5th Digit
Resistance To Bending
Code
Temperature
1
Rigid Conduit

6th Digit
Electrical Property
Code
Temperature
2
Electrical Insulating

Below is the example of three numbers of conduit based on different conduit classification code.

Standard
BS EN 50086-2-1
Conduit
Conduit 1
Conduit 2
Conduit 3
Classification Code
222112
332112
442112
Duty
Light
Medium
Heavy
Compression (N)
320
750
1250
Impact (J)
1
2
6
Heat Resistant
10
20
40
Flame Propagation Resistance
25
35
45

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