Guideline for Aluminum Alloy Conductors for Distribution Feeder Applications with Recommendations for Connections

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A Distribution Feeder Installation
1 Distribution feeder conductors in sizes #6 AWG to 1000 kcmil may be copper
or aluminum conductor material (ACM).
i. Aluminum alloy conductors shall be compact stranded conductors of
NUAL® (AA-8030) as manufactured by Alcan Cable or of a recognized
8000 Series aluminum alloy conductor material by the Aluminum
Association.
ii. Manufacturer shall verify compliance with the elongation requirement per
Table 10.1 of UL Standard 1581 for stranded AA-8000 series aluminum
alloy conductors on wires taken from the conductor after stranding.


Connections for Conductors
1 Using Mechanical Screw Type Connectors:
i. Connectors shall be dual rated (AL7CU or AL9CU) and Listed by CSA
for use with aluminum and copper conductors and sized to accept
aluminum conductors of the ampacity specified.
ii. Using a suitable stripping tool, to avoid damage to the conductor, remove
insulation from the required length of the conductor.
iii. Clean the conductor surface using a wire brush and apply a Listed joint
compound.
iv. Tighten the connection per the connector manufacturer’s recommendation.
v. Wipe off any excess joint compound.

2 Using Mechanical Compression Type Connectors:
i. Connectors shall be dual rated (AL7CU or AL9CU) and Listed by CSA
for use with aluminum and copper conductors and sized to accept
aluminum conductors of the ampacity specified.