Relays Question

[Sravan]

I want to control appliances with relays, I have some AC relays that
are coil driven, how do I connect the relay to the plugs of my
appliances easily and safely?

[RM]

"Sravan" <sravanmx@gmail.com> wrote in message
news:1108634190.731164.318740@c13g2000cwb.googlegr oups.com...
> I want to control appliances with relays, I have some AC relays that
> are coil driven, how do I connect the relay to the plugs of my
> appliances easily and safely?
>

First, make sure the ampacity ratings on the contacts of the relay are
sufficient for your appliance. Otherwise a nasty fire may be the result.

Buy a mating plug from Home depot or somewhere, some appropriate gauge SO
cord, and some spade lugs. Open up the mating plug, connect your hot,
neutral and ground (or in the case of 220, two hots) from your SO cord to
the plug. On the other end, strip back the rubber jacket on the cord, and
strip the insulation on the individual conductors. Crimp on appropriate
gauge spade lugs, and then connect these to the screw terminals of your
relay. As an extra precaution, wrap the exposed screw terminals with black
electrical tape.

That's all assuming you are putting the relay next to the appliance. It
also assumes you have some reasonable understanding and experience when
dealing with high voltage electricity and you aren't going to kill, maim or
injure yourself, or burn your house down. YMMV

Robert

[SQLit]

"RM" <trash@trash.com> wrote in message
news:S30Rd.5106$VI5.4922@newsread3.news.atl.earthl ink.net...
> "Sravan" <sravanmx@gmail.com> wrote in message
> news:1108634190.731164.318740@c13g2000cwb.googlegr oups.com...
> > I want to control appliances with relays, I have some AC relays that
> > are coil driven, how do I connect the relay to the plugs of my
> > appliances easily and safely?
> >
>
> First, make sure the ampacity ratings on the contacts of the relay are
> sufficient for your appliance. Otherwise a nasty fire may be the result.
>
> Buy a mating plug from Home depot or somewhere, some appropriate gauge SO
> cord, and some spade lugs. Open up the mating plug, connect your hot,
> neutral and ground (or in the case of 220, two hots) from your SO cord to
> the plug. On the other end, strip back the rubber jacket on the cord, and
> strip the insulation on the individual conductors. Crimp on appropriate
> gauge spade lugs, and then connect these to the screw terminals of your
> relay. As an extra precaution, wrap the exposed screw terminals with
black
> electrical tape.
>
> That's all assuming you are putting the relay next to the appliance. It
> also assumes you have some reasonable understanding and experience when
> dealing with high voltage electricity and you aren't going to kill, maim
or
> injure yourself, or burn your house down. YMMV
>
> Robert

high voltage is considered above 69,000 volts. Medium voltage is less than
69k and greater than 1,000 volts. Low voltage is less than 1k.

Provide pictures of the relays and maybe the group can come up with specific
ideas.

Safety first, your talking about appliances so I could infer that your
talking about a kitchen application.

[RM]

"SQLit" <SQLitnospam@cox.net> wrote in message
news:l13Rd.90668$0u.71281@fed1read04...
>

>
> high voltage is considered above 69,000 volts. Medium voltage is less than
> 69k and greater than 1,000 volts. Low voltage is less than 1k.
>

No intention to flame, but under whose definitions? In industrial
applications, it is recognized that low voltage is 24VDC or less, medium or
control voltage is 120VAC and high voltage is 220, 460, 4160 et al. In NEC
and DOE, 600 Volts is considered high voltage although DOE notes that
"anything above 50V should be considered life threatening". Just curious
where you got your figures.

IMHO, anything that's capable of stopping your heart is high enough for me
;)

>
> Safety first, your talking about appliances so I could infer that your
> talking about a kitchen application.
>
Could be an electric hot water heater, electric heater, dryer, or something
else that operates on 220V.

Robert

[Robert L Bass]

>> high voltage is considered above 69,000 volts.
>> Medium voltage is less than 69k and greater
>> than 1,000 volts. Low voltage is less than 1k.
>
> No intention to flame, but under whose definitions?

None here either. I look at it this way. Anything that can kill you I
consider high voltage and treat it as such. Anything less I treat as low
voltage. That said, don't forget that even 12 Volt DC stuff can also burn
the house down. It's the Amps that do it.

--

Regards,
Robert L Bass

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