How many lugs were under the bolt? It looks possibly like it didn't
have enough threads into the shunt. I replace the bolt with a longer
one, if I have more than one lug. Also I use the thin lugs that come in
Outback, Magnum, and Midnite equipment; I never use those super thick
lugs that most electrical supplies have. They are way too thick and
usually don't play well with shunt blocks or battery posts. They also
are not usually meant for the fine stranded cable usually used. Standard
THHN in 4/0 puts way too much strain on bolts and hardware. I get UL
listed thin lugs from Del City and Quick Cable, and use Cobra X Flex or
the dual listed locomotive cable. None of this may be your problem however.
Ray Walters
Remote Solar
303 505-8760
On 10/2/18 2:13 AM, Ron Young wrote:
Anyone seen this before, the bolt on a shunt inside a Magnum inverter
snapped right off, other half inside the shunt. I was tightening it
but I don’t believe excessively. It appears to be crystallized. Magnum
is replacing the shunt but it’s my good luck that the job is 5 hours
into a remote backwater along a punishing road.
Ron Young
earthRight Solar - Solareagle.com <http://Solareagle.com>
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