Yes, CCA is suitable for direct burial when properly insulated with XLPE or EPR. The copper surface provides good corrosion resistance, and the cable should be installed per local code requirements for burial depth and protection.
How do CCA splicing methods compare to copper?
CCA can be spliced using compression connectors, resin splices, and heat shrink methods similar to copper. Use connectors rated for the conductor type and follow manufacturer torque specifications.
What insulation types are recommended for CCA underground cables?
XLPE (cross-linked polyethylene) and EPR (ethylene propylene rubber) are standard insulation choices, both rated for 90°C operation. XLPE is most common for new installations due to excellent electrical and mechanical properties.
Do utilities accept CCA for underground distribution?
Acceptance varies by utility. Many municipal utilities and cooperatives accept CCA for cost-sensitive projects. Always verify with the specific utility's material specifications before specifying CCA.
