RE: Am I courting disaster?

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: Yurtle Turtle <yurtle_t-at-yahoo-dot-com> 

Yes, this is for HV side protection. If placed on the
LV side, it would hardly protect the pig.

This one conducts at 18 kV and is for a 14.4 kV 25 kVA
pig. The photo doesn't do it justice, as it's probably
around 30" long and 3" to 4" in diameter.

As to whether it's a MOV, I've always assumed it was
simply a spark gap, since it's called an "18 kV gap":

http://www.hot-streamer-dot-com/adam/garage/gap_18kV_2.jpg

though it may be more than a simple spark gap. Someone
on the list disected one once, though I forget what he
found.

Adam

--- Tesla list <tesla-at-pupman-dot-com> wrote:
 > Original poster: Thomas <tom-at-pwrcom-dot-com.au>
 >
 > Yikes! I take it that is meant to protect
 > thetransformer from the HV side?
 >
 > What is it- a MOV?
 >
 > I was thinking more along the lines of protecting
 > other devics connected to
 > the same LV (120/240V) circuit as the pig.
 >
 > Tom.
 >
 > Original poster: Yurtle Turtle <yurtle_t-at-yahoo-dot-com>
 >
 > I think he was referring to a pig lightning
 > arrestor,
 > like one of these:
 >
 >
http://www.hot-streamer-dot-com/adam/garage/gap_18kV_1.jpg
 >
 > Quite huge and heavy.
 >
 > Adam
 >
 > --- Tesla list <tesla-at-pupman-dot-com> wrote:
 >   > Original poster: Thomas <tom-at-pwrcom-dot-com.au>
 >   >
 >   > Original poster: "Crow Leader"
 >   > <tesla-at-lists.symmetric-dot-net>
 >   >
 >   > -snip-
 >   >    How about just a spark gap? Lightning
 > arrestors
 >   > are large and heavy,
 >   > even
 >   >    polymer ones. This sort of defeats the entire
 >   > goal you were shooting
 >   > for.
 >   > -----------------------------------
 >   >
 >   > Where'd you get that idea? One of these on each
 > 120V
 >   > line to earth would do
 >   > the trick quite nicely:
 >   >
 >
http://www.novaris-dot-com.au/products/earthing/specs/ec20.html
 >   >
 >   >
 >