Jim, I'd connect it to neutral, which would provide the most
protection for your equipment. Since N and G are bonded at the 200A
service entrance, there isn't a safety issue with N soaring above G.
Truthfully it probably doesn't make much difference whether you
connect to N or G, but I always like return currents or surges to go
to N, if possible.
73,
Jim w8zr
Sent from my iPhone
> On Sep 21, 2018, at 1:23 PM, Jim Thomson <jim.thom@telus.net> wrote:
>
> IF using a 130 V rated MOV, where does it get wired ? Do you wire
> between 120 vac and neutral.... or 120 vac and chassis of equipment in
> question ?
>
> IF a spike / transient / glitch etc occurs.and MOV conducts..which
> path do you want the fault current to flow through, the ground wire or the
> neutral ?
>
> The only place the neutral and ground are bonded together is at the main
> 200A panel. On my 100 A sub panel, the neutral + ground are NOT bonded,
> per the electrical code.
>
> Either way, the MOV is fused, so if it does fail shorted... the fuse opens
> up. Also I use a neon / led wired between output of fuse..which is also
> the input to the MOV...and neutral.
> In normal operation, the neon / led is illuminated. IF fuse opens up,
> the neon / led goes out.... telling me the MOV is doa.
>
> Tnx... Jim VE7RF
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