Round wire concentric lay overhead electrical stranded conductors

1.1
This Standard specifies the electrical and mechanical characteristics of round wire concentric lay overhead electrical stranded conductors made of combinations of any of the following metal wires: 

(a) aluminum wires:

• (i) hard-drawn aluminum in accordance with CAN/CSA-C60889, designated A1; 
  
  (ii) aluminum alloy AA6101-T81 in accordance with CAN/CSA-C60104, designated A2; and 
  
  (iii) aluminum alloy AA6101-T83 in accordance with CAN/CSA-C60104, designated A4;

(b) zinc-coated steel wires in accordance with CAN/CSA-C60888:

• (i) regular strength steel, designated S1A or S1B, where A and B are zinc coating classes; 
  
  (ii) high strength steel, designated S2A or S2B; and 
  
  (iii) extra high strength steel, designated S3A; and

(c) aluminum-clad steel wires in accordance with CAN/CSA-C61232 using Class 20, designated 20SA Type A, corresponding to a conductivity of 20.3% IACS. 

1.2
The conductor designations covered by this Standard include but are not limited to 

(a) A1, A2, A4; 

(b) A1/S1A, A1/S1B, A1/S2A, A1/S2B, A1/S3A; 

(c) A2/S1A, A2/S1B, A2/S3A; 

(d) A1/20SA; and 

(e) A1/A2, A1/A4.