Re: a/c switches

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

Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>" <Kidd6488-at-aol-dot-com>


>
> I would avoid the SPST relays since they cost almost as much as DPDT ones and
> the DPDT ones are far more versatile.  You can also wire the contacts in
> parallel for 40 amps (it really does not work that way, but...) 



Just for those are confused,

SPST = Single Pole, Single throw,  just like a normal switch. That is, only one
switch (Relay), that is either ON or OFF.

DPDT = Double Pole, Double throw. Actually two switches (Relays) That are more
than just on or off, they are position 1, or position 2.

Anyways, what i originally posted for. With DPDT relays, you can wire them in
series, so the switch actually opens twice (or with 3PDT ones, 3 times) as
fast, so you get less arcing, especially at 240V.
---------------------------------------
Jonathon Reinhart
hot-streamer-dot-com/jonathon