[TowerTalk] XHHW wire

[Steve Bookout]

Very timely post!

For years, I've had a 4 element 80 delta loop array suspended from a 
catenary stretched between two 190 foot towers.

I used THHN when I built it, but with time, the insulation is coming off 
the wire.  I know that when I designed it, I had taken the velocity 
factor into account WITH the PVC wire insulation.

Now, that I am losing my insulation, I have been looking for a better 
alternative to the THHN wire.  Is this it?

Can anyone comment on the difference in the insulating material?   PVC 
vs ???   And, maybe the difference in the dielectric constant f/u/w EZNEC?

This is my 'bread and butter' EU antenna.

Comments appreciated.

73 de Steve, NR4M

On 2/18/2020 7:15 AM, john at kk9a.com wrote:
> Great post!  I do not know the difference between PVC and XLPE, 
> perhaps someone on the list does. XLPE is rated to have good UV 
> resistance, whatever that means. I have never seen any damage to THHN 
> PVC however it certainly it would be nice to not have the clear outer 
> nylon coating when it is used outdoors for antennas and rotators.
>
> John KK9A
>
> Dick NY1E wrote:
>
> In the spring I'm building new dipoles for 160, 80 & 40, instead of 
> using THHN I see Home Depot has XHHW #12 stranded, like THHN but 
> without the nylon jacket and it says its UV resistant. Has anyone used 
> it? It's a bit more expensive at $98/500' vs $65/500' but if it keeps 
> that nylon from hanging off the antennas....de Dick NY1E
> Sent from Yahoo Mail on Android
>
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