Help with compact AL RHH/RHW

[Twoskinsoneman]

When sizing conduit for USE-2 alumaflex compact AL RHH/RHW do you just use the standard RHH/RHW sizing (example Ch9 table 10)?

The reason I ask is because according to table C.10A I could get 5 #2 compact wires into a 1-1/4" PVC but with table C.10 only 4 #2 RHH/RHW wires (non compact) in the same conduit...

So this wire claims it's compact but none of the tables list any RHH/RHW wires that are compact....

 

[benaround]

twoskins, read any note two in those tables.

 

[Twoskinsoneman]

twoskins, read any note two in those tables.

I guess I'm gonna need you to spell out the connection that would explain the compact issue...


2. Two-hour fire-rated RHH cable has ceramifiable insulation which has much larger diameters than other
RHH wires. Consult manufacturer?s conduit fill tables.
*Types RHH, RHW, and RHW-2 without outer covering.

 

[benaround]

I guess I'm gonna need you to spell out the connection that would explain the compact issue...


.

I don't think it is a compact issue, I think it's a insulation thickness issue, but I don't know

that for a fact.

 

[480sparky]

Compact conductors are the same ampacity as non-compacted, compressed or solid. It's only used for raceway fill purposes.

You may need to contact the manufacturer to find out the conductor properties.