[BC] RG-8

dynotherm at earthlink.net dynotherm at earthlink.net
Thu Apr 3 15:15:03 CDT 2008



-----Original Message-----
>From: RichardBJohnson at comcast.net
>Subject: Re: [BC] RG-8
>
>Bob,
>RG8/AU is pretty good. The insulation will handle 30 kV!
>This doesn't mean RF connectors will. Many Hi-pot testers
>use RG8 cable stripped back about 4 inches so there is
>about 4 inches of polyethylene before the shield. From
>a UL ampacity perspective, the inside wire is 11 gauge
>and will therefore handle 25 amperes, MUCH more than
>you would like!  That is 31,250 watts!

Quick! Get me the hip waders and the Bobcat. This is
getting so deep a shovel can't begin to keep up. <ggg>

That is the problem with leaving out critical points
like the loss which = HEAT and the plastic temp of
polyethylene. Get REAL! The stuff will melt into a
pile of glop long before you get 3000 W through it,
let alone 30 (!) kW.

Phil Alexander, CSRE, AMD




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