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nVent ERICO Cu-Bond Round Conductor


For decades, nVent ERICO has provided the market with high quality copper-bonded ground rods. nVent ERICO has taken that same concept in ground rods and made this into a revolutionary new grounding conductor. The core of the nVent ERICO Cu-Bond Round Conductor is a low carbon steel grade for improved flexibility in the field. The steel core is plated with nickel then electro-plated with a coating of copper. This electro-plating process helps ensure a long-lasting molecular bond between the copper layer and the steel. The steel core of the conductor provides theft-deterrent benefits, making the conductor difficult to cut with hand tools. With this steel core, nVent ERICO Cu-Bond Round Conductor is a cost-effective alternative to 100% copper conductor. The copper surface of the conductor provides high conductivity and corrosion resistance properties. Above grade, the unique properties of nVent ERICO Cu-Bond Round Conductor make it ideal for both horizontal and vertical placement. The conductor is well-suited as a lightning protection conductor when applied in accordance with the IEC 62305-3 Edition 2.0 standard. In the utility industry, the product can be used as a distribution down-lead conductor or as part of a bonding kit for substation fences or equipment ground risers back to the grid. In telecom applications, the product can be used to connect an equipment ground to the ground grid, as a riser (down-lead) for towers, or as a grounding conductor for datacenter mesh bonding. They are also well suited for rail applications such as trackside bonding conductors and stray current conductors, grounding kits for trackside equipment, electrical traction power, as well as in substation, wayside shelters, and communication antenna equipment. Below grade, nVent ERICO Cu-Bond Round Conductors are ideal as earthing and bonding conductors where copper theft may occur. They may be used as a buried ground grid conductor or electrode for wireless telecom towers, power distribution and transmission grounding in utility substations, large scale ground mount solar farms, petro-chemical and mining infrastructure in industrial facilities, and railway applications. The conductor also can be used as an interconnecting grounding conductor between wind towers or as a grounding grid at the base of a wind tower.


  • Theft-deterrent; steel core is hard to cut with hand tools
  • Cost-effective; copper bonded to a steel core minimizes the amount of copper in the cable
  • Superior corrosion resistance; application life of typically 30-40 years in most soil conditions
  • Copper-bonded coating will not crack or tear when the conductor is bent
  • High resistance to corrosion and provides a low-resistance path to ground
  • nVent ERICO Cu-Bond Round Conductor is marked every meter (3.28') for easy measurement in the field
  • Meets the requirements of IEC® 62305-3 Edition 2 and IEC/EN 62561-2 for lightning protection applications
  • nVent ERICO Cu-Bond Round Conductors are UL certified to IEC® 62561-2


Part Number CBSC10
Material Copper-Bonded Steel
Plating Thickness 10 mil
Complies With IEC® 62305-3 Edition 2
IEC® 62561-2
EN 62561-2
Diameter (Ø) 0.39"
Length (L) 328'
Fusing Capacity Equivalency #2
nVent ERICO Cadweld Conductor Code T2
Unit Weight 139.4 lb
Certification Details IEC® 62561-2
Certifications Qualifoudre
UL (IEC) OVHF.E476308
Standard Packaging Quantity 100 m
UPC 78285670423
EAN-13 8711893132311
Conductor Physical Size Comparison
Conductor Size Approximate Diameter Cross Section
#4 AWG 0.235" -
#2 AWG 0.292" -
CBSC8 0.315" 0.08 in²
1/0 AWG 0.373" -
CBSC10 0.394" 0.12 in²
2/0 AWG 0.419" -
3/0 AWG 0.410" -
CBSC13 0.520" 0.21 in²
4/0 AWG 0.528" -
CBSC14 0.560" 0.25 in²
250 MCM 0.575" -
CBSC16 0.618" 0.31 in²
300 MCM 0.629" -
CBSC18 0.697" 0.38 in²
Conductivity Comparison
Part Number AWG (Ω/km)  CBSC Resistance per 
Length Comparison
mm² (Ω/km) CBSC Resistance per 
Length Comparison
CBSC18 1/0 AWG 118.52% 50 mm² 110.82%
2 AWG 74.54% 35 mm² 77.57%
CBSC16 2 AWG 102.20% 35 mm² 106.36%
4 AWG 64.27% 25 mm² 75.97%
CBSC14 2 AWG 137.78% 25 mm² 102.42%
4 AWG 86.65% 16 mm² 65.55%
CBSC13 2 AWG 134.46% 25 mm² 99.95%
4 AWG 84.56% 16 mm² 63.97%
CBSC10 4 AWG 132.25% 16 mm² 100.05%
6 AWG 83.17% 10 mm² 62.53%
CBSC8 6 AWG 107.85% 16 mm² 129.73%
8 AWG 67.83% 10 mm² 81.08%
Fusing Current Irms (kA) - IEEE® 837 Annex C
Conductor Type
Copper-bonded, Steel Core, Roda
Conductor Cross Section in mm2 A 50.265 78.52 138.07 158.903 199.84 243.27
Initial Conductor Temperature in °C Ta 40 40 40 40 40 40
Time of Current Flow in Seconds tc 2 2 2 2 2 2
Maximum Allowable Temperature in °C Tm 1084 1084 1084 1084 1084 1084
Thermal Coefficient of Resistivity
at Reference Temperature Tr
ar 0.00378 0.00378 0.00378 0.00378 0.00378 0.00378
Resistivity of the Ground Conductor
at Reference Temperature Tr in m&-cm
rr 8.621 8.621 8.621 8.621 8.621 8.621
1/a0 or (1/ar) – Tr in °C K0 245 245 245 245 245 245
Thermal Capacity Factor in Joules/cm3/°C TCAP 3.846 3.846 3.846 3.846 3.846 3.846
Material Conductivity % 24.5 20.4 18.8 15.9 16.3 17.7
Fusing Current Calculation ß 84.73 84.73 84.73 84.73 84.73 84.73
I 4.79 7.48 13.16 15.15 19.05 23.19
I90% 4.31 6.74 11.84 13.63 17.14 20.87
I80% 3.83 5.99 10.53 12.12 15.24 18.55
Resistance per unit length measurements made in mΩ/m, CBSC compared with respect to AWG/Metric.
The IEEE® 837 standard (Annex C) provides a method of calculating the fusing current for conductors. This chart is a reference of the calculations for copper-bonded steel conductor according to the IEEE 837 standard. This information is for reference only.

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