www.IHIConnectors.com ---------Wire Stranding by Class of Wire ----------- www.LugsDirect.com
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Wire Strand Class |
Lay Type |
Rigid /Flex |
Typical Usage |
Number of strands / Strand sizes |
14 to 2 AWG |
1 to 4/0 AWG |
250 to 500 kcmil |
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AA |
Concentric |
Rigid stranded |
Power cables |
3 (4-1) |
7 (1/0-4/0) |
12 (250-350) |
A |
Concentric |
Rigid stranded |
Power cables |
7 (4-4/0) |
7 (4-4/0) |
19(250-400) |
B |
Concentric |
Rigid stranded |
Power cables |
7 |
19 |
37 |
Compact |
Concentric |
Rigid stranded |
Mainly Canada |
7 (8 to 2 AWG) |
19 |
37 |
C |
Concentric |
Rigid stranded |
More Flex power cables |
19 |
37 |
61 |
D |
Concentric |
|
Extra Flex power cables |
37 |
61 |
91 |
G |
Rope/conc |
Flexible stranded |
Portable Flex power cables |
49 |
133 |
259 |
H |
Rope/conc |
Flexible stranded |
Extreme Flex power cables Take up reels |
133 |
259 |
427 |
DLO |
|
Flexible stranded |
Diesel Locomotive Cable |
Combinations of 24 AWG wires (.0201" dia) |
I |
Rope/bunch |
*Flexible stranded |
Apparatus and motor leads |
Combinations of 24 AWG wires (.0201" dia) |
K |
Rope/bunch |
Flexible stranded |
Cords and cables Stationary Svc |
Combinations of 30 AWG wires (.010" dia) |
M |
Rope/bunch |
Flexible stranded |
Cords and cables Constant Svc |
Combinations of 34 AWG wires (.0036" dia) |
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*stranding similar DLO |
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Reverse Lay wire is that having alternating directions of twist for each layer to avoid wire untwisting under tension which can cause pressure connection failure |
Concentric and Compressed wires are generally made reverse lay |
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