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Proper Product Sizing: Diameter Comparison for Copper Equivalent Fusing Current for Grounding Applications

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Application
Copper-Clad steel wire and strand combines the electrical characteristics of copper with the mechanical properties of steel. Often used for buried ground grid systems, overhead ground wire and messenger wire, it can resist mechanical damage during installation, as well as electrical damage during a fault condition.

Copper-Clad Steel has virtually no scrap value, greatly reducing the potential of theft.

Construction
Dead Soft Annealed (DSA) Copper-Clad Steel (CCS) conductors are a concentric lay-stranded construction. The CCS strands are a 40% conductivity grade of material using a low carbon steel core rendering greater flexibility to enable easier handling during installation.

Specifications
CCS bare conductors meet or exceed the following ASTM specifications:
  • B-910 Standard Specification for Annealed Copper-Clad Steel Wire
  • B-258 Standard Specification for Standard Nominal Diameters and Cross-Sectional Areas of AWG Sizes of Solid Round Wires Used as Electrical Conductors
  • B-228 Standard Specification for Concentric-Lay-Stranded Copper-Clad Steel Conductors
NOTE:

Please click here for a chart of Approximate Short Time Fusing Circuits in PDF form.
Please click here for a graphical representation of Approximate Short Time Fusing Circuits of the chart.

The ampacity rating and the DC and AC resistance of the Copper Clad Steel wire conductor is not equivalent to that of copper conductor.

To select the correct equivalent please see the chart below.






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Copper Clad Steel
40% DSA
SIZE

Copper Product
SIZE

Copper Product
DIAMETER
(in)

Copper Clad Steel
40% DSA
DIAMETER
(in)

#6 SOLID #6 SOLID 0.162 0.162
#4 SOLID #4 SOLID 0.204 0.204
7 #9 40% DSA #2 7W 0.292 0.343
7 #8 40% DSA 1 SOLID 0.289 0.385
7 #7 40% DSA 1/0 7W 0.368 0.433
7 #6 40% DSA 2/0 7W 0.414 0.486
7 #5 40% DSA 3/0 7W 0.464 0.546
19 #9 40% DSA 4/0 7W 0.552 0.572
19 #8 40% DSA 250 12W 0.574 0.642
19 #7 40% DSA 300 19W 0.629 0.721
19 #6 40% DSA 400 19W 0.726 0.810
19 #5 40% DSA 500 19W 0.813 0.910
  Results 1 - 12 of 12 1 
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