I recently move to a new home. One plug in the garage wasn't wired with an
outlet yet. It appeared on the panel as "Heater" and has two breakers. I
think it's what they call a 208 volt heater plug (why 208?) Are these
common? Can I use it as a 220 instead (Table Saw)? There doesn't appear to
be a neutral only two hots. I'm guessing 12 gauge wire. Thx.
No. That is correct. A two pole breaker is designed to be installed that
way. The breaker should be a single 2-pole breaker, and not two 1-pole
breakers.
"LostInSpace" <mkochschREMOVE@THIS_1234.shaw.THISTOO.ca> wrote in message
news:oSdUb.403319$ts4.50588@pd7tw3no...
> Does it matter that the breakers are both on the left hand side of the
> panel? Not one on the left and one on the right? Does that mean both lines
> are coming in to the plug on the same phase? And not 180 degrees out?
>
> "Al Reid" <[email protected]> wrote in message
> news:[email protected]...
> > You can have true 208V single phase without 3 phase power being
supplied.
> > Line-to-Line is 208 V and Line to Neutral is 120 V.
> >
> > However, in my experience, it is highly unusual to have 3 phase power
> > supplied to a residence. The most common US residential service is
> 120/240.
> >
> >
> > "Crayon" <[email protected]> wrote in message
> > news:[email protected]...
> > > If I'm not mistaken you can't have true 208 without 3 phase power, i.e
3
> > > hots coming into your house. Most US residences will have 2 hots which
> is
> > > correctly referred to as single phase 220 service. This is what you've
> > got.
> > > probably a heater or a dryer.
> > >
> > > Any electricians confirm this?
> > > "Scott Lurndal" <[email protected]> wrote in message
> > > news:[email protected]...
> > > > [email protected] (Greg) writes:
> > > > >208 is just a generic name. In a regular US home that will have
240v
> on
> > > it (AKA
> > > > >220,230).
> > > > >You can look here to see what it really is
> > > > >
> > > > >http://www.quail.com/nema.cfm
> > > >
> > > > 208 is anything but a generic name.
> > > >
> > > > And it is entirely possible that some newer residential
> > > > environments (especially multifamily homes) will have 208
> > > > service (which is _NOT_ the same as 220).
> > > >
> > > > Don't post if you don't know.
> > > >
> > > > scott
> > >
> > >
> >
> >
>
>
I'm surprised that there would be a 208 volt service in a residential area.
The utility that serves your area would provide 220v and half of that is the
110v that is standard in the US. For you to have anything different would
require a step-up or step-down transformer (in your case) somewhere in the
circuit. Check around your circuit breaker panel for a transformer on the
wires that run to the plug you mentioned. If there isn't any transformer
than you probably don't have 208v. However, you may want an electrician
check it out. Circuit breakers won't step-down the voltage. Hope this
helps.
frank
"LostInSpace" <mkochschREMOVE@THIS_1234.shaw.THISTOO.ca> wrote in message
news:BX9Ub.400032$X%5.251472@pd7tw2no...
> I recently move to a new home. One plug in the garage wasn't wired with an
> outlet yet. It appeared on the panel as "Heater" and has two breakers. I
> think it's what they call a 208 volt heater plug (why 208?) Are these
> common? Can I use it as a 220 instead (Table Saw)? There doesn't appear to
> be a neutral only two hots. I'm guessing 12 gauge wire. Thx.
>
>
They test at around 240
"Toller" <[email protected]> wrote in message
news:[email protected]...
>
> "LostInSpace" <mkochschREMOVE@THIS_1234.shaw.THISTOO.ca> wrote in message
> news:pidUb.403143$ts4.116675@pd7tw3no...
> > It tests around 115 on each side therefore not 208. Someone I know
called
> it
> > a 208, they were wrong. Thx.
>
> That is not adequate; 208a will test about 115v to ground on each also.
You
> have to test hot to hot.
>
> 208v has two 120v hots 120 degrees out of phase. Between them they are
> 208v.
> 240v has two 120v hots 180 degrees out of phase. Between them they are
> 240v. (strictly speaking they are not out of phase, but it is close enough
> to the truth for this purpose.)
>
>
[email protected] (Greg) writes:
>208 is just a generic name. In a regular US home that will have 240v on it (AKA
>220,230).
>You can look here to see what it really is
>
>http://www.quail.com/nema.cfm
208 is anything but a generic name.
And it is entirely possible that some newer residential
environments (especially multifamily homes) will have 208
service (which is _NOT_ the same as 220).
Don't post if you don't know.
scott
Toller wrote:
> Table saw don't ordinarily need a neutral, though the magnetic switch
> on mine does.(don't ask...)
It will need a neutral if it also has a 110V device (such as a light bulb,
for example).
Also I read somewhere that some new regs require 4-conductor wiring for all
220V outlets. However, I do not have a reliable source for that statement
(nor do I know if it applied to just outlets or devices as well), take it
as a rumor I suppose.
--
gabriel
Al Reid wrote:
> You can have true 208V single phase without 3 phase power being supplied.
> Line-to-Line is 208 V and Line to Neutral is 120 V.
>
> However, in my experience, it is highly unusual to have 3 phase power
> supplied to a residence. The most common US residential service is 120/240.
>
>
Typically a house is supplied with a single 240volt phase center tapped.
Neutral is connected to this center tap and thus pole to pole voltage is
240 and pole to centertap is 120.
208 volt service is derived from 120 volt three phase "wye" power where
one pole from each phase is tied together. Neutral is connected to this
junction which yields 120 volts pole to neutral and 208 volts pole to
pole. The difference is that the 208 is derived from two phases that are
120 degrees apart. 120 volts * sin(pi/3) * 2 = 207.6 volts.
Some utility companies just tap into two phases to give the 208 to a
residential unit, though this is rare. Usually they step a single 7200
volt or so single phase line into center tapped 240.
-Bruce
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Al Reid wrote:
> "BruceR" <[email protected]> wrote in message
I said.
>
>
>>208 volt service is derived from 120 volt three phase "wye" power where
>>one pole from each phase is tied together. Neutral is connected to this
>
>
> Actually it is the other way around. 120V single phase is derrived from a
> 208V 3 phase Y connected transformer.
>
>
My bad, the stated voltage is the maximum pole to pole voltage
For those interested, the diagram at the bottom of the page details this.
http://www.eatonelectrical.com/unsecure/html/101basics/Module04/Output/TransformerConfigurations.html
-Bruce
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LostInSpace wrote:
> So can I plug my table saw into it or what?
>
>
Hey! don't go off topic here! ;)
Yes you can. If you measure 240 then as long as you TS is wired for
it you are all set
-Bruce
-----= Posted via Newsfeeds.Com, Uncensored Usenet News =-----
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-----== Over 100,000 Newsgroups - 19 Different Servers! =-----
It works! Thx.
"BruceR" <[email protected]> wrote in message
news:[email protected]...
> LostInSpace wrote:
> > So can I plug my table saw into it or what?
> >
> >
>
> Hey! don't go off topic here! ;)
>
>
> Yes you can. If you measure 240 then as long as you TS is wired for
> it you are all set
> -Bruce
>
>
>
> -----= Posted via Newsfeeds.Com, Uncensored Usenet News =-----
> http://www.newsfeeds.com - The #1 Newsgroup Service in the World!
> -----== Over 100,000 Newsgroups - 19 Different Servers! =-----
On Wed, 04 Feb 2004 22:08:48 GMT, "Toller" <[email protected]> wrote:
>
>My dryer puts 7a into the ground (technically an "uninsulated neutral")
>which is a little spooky, but I have never heard of anyone having a problem;
>which could result if the neutral connection broke somehow and energized the
>case.
>
Do you mean the safety 'green' wire? That's highly dangerous as well as illegal... could put power anywhere because of
the water pipe grounding. There was a case here of some ones house going on fire because of excess ground current in a
neighbors house!! For some reason, probably linked to the electric company location of their ground, the current found
its best path thru the ground leads of the next house, and the attic caught on fire where the leads entered the house.
I talked to a company engineer, and he said they detected 70 amperes of 'lost' ground current in one of their feeds!!
You should re-wire it with the proper 4 wire connector...
"BruceR" <[email protected]> wrote in message
news:[email protected]...
> Al Reid wrote:
> > You can have true 208V single phase without 3 phase power being
supplied.
> > Line-to-Line is 208 V and Line to Neutral is 120 V.
> >
> > However, in my experience, it is highly unusual to have 3 phase power
> > supplied to a residence. The most common US residential service is
120/240.
> >
> >
>
> Typically a house is supplied with a single 240volt phase center tapped.
> Neutral is connected to this center tap and thus pole to pole voltage is
> 240 and pole to centertap is 120.
Correct, that is what I said.
>
> 208 volt service is derived from 120 volt three phase "wye" power where
> one pole from each phase is tied together. Neutral is connected to this
Actually it is the other way around. 120V single phase is derrived from a
208V 3 phase Y connected transformer.
In any case, the rest of what you said is correct as well.
> junction which yields 120 volts pole to neutral and 208 volts pole to
> pole. The difference is that the 208 is derived from two phases that are
> 120 degrees apart. 120 volts * sin(pi/3) * 2 = 207.6 volts.
>
> Some utility companies just tap into two phases to give the 208 to a
> residential unit, though this is rare. Usually they step a single 7200
> volt or so single phase line into center tapped 240.
>
> -Bruce
>
>
>
> -----= Posted via Newsfeeds.Com, Uncensored Usenet News =-----
> http://www.newsfeeds.com - The #1 Newsgroup Service in the World!
> -----== Over 100,000 Newsgroups - 19 Different Servers! =-----
"LostInSpace" <mkochschREMOVE@THIS_1234.shaw.THISTOO.ca> wrote in message
news:xrcUb.390803$JQ1.33407@pd7tw1no...
> It's two, 110~120's 15amps each and a ground.What's it for. Can I use it
for
> a 220 table saw? Why no neutral? Thx.
>
Table saw don't ordinarily need a neutral, though the magnetic switch on
mine does.(don't ask...)
Two 120v wires can mean either 240v or 208v.
It would be very unusual to have 208v in a home, so it is probably 240v and
is probably okay; but if it really is 208v you could burn the motor out.
It is prudent to test it with a voltmeter and/or check with your utility to
make certain.
No by being stacked on each other they ARE on different phases. If they were
side by side you would have an issue.
"LostInSpace" <mkochschREMOVE@THIS_1234.shaw.THISTOO.ca> wrote in message
news:oSdUb.403319$ts4.50588@pd7tw3no...
> Does it matter that the breakers are both on the left hand side of the
> panel? Not one on the left and one on the right? Does that mean both lines
> are coming in to the plug on the same phase? And not 180 degrees out?
>
> "Al Reid" <[email protected]> wrote in message
> news:[email protected]...
> > You can have true 208V single phase without 3 phase power being
supplied.
> > Line-to-Line is 208 V and Line to Neutral is 120 V.
> >
> > However, in my experience, it is highly unusual to have 3 phase power
> > supplied to a residence. The most common US residential service is
> 120/240.
> >
> >
> > "Crayon" <[email protected]> wrote in message
> > news:[email protected]...
> > > If I'm not mistaken you can't have true 208 without 3 phase power, i.e
3
> > > hots coming into your house. Most US residences will have 2 hots which
> is
> > > correctly referred to as single phase 220 service. This is what you've
> > got.
> > > probably a heater or a dryer.
> > >
> > > Any electricians confirm this?
> > > "Scott Lurndal" <[email protected]> wrote in message
> > > news:[email protected]...
> > > > [email protected] (Greg) writes:
> > > > >208 is just a generic name. In a regular US home that will have
240v
> on
> > > it (AKA
> > > > >220,230).
> > > > >You can look here to see what it really is
> > > > >
> > > > >http://www.quail.com/nema.cfm
> > > >
> > > > 208 is anything but a generic name.
> > > >
> > > > And it is entirely possible that some newer residential
> > > > environments (especially multifamily homes) will have 208
> > > > service (which is _NOT_ the same as 220).
> > > >
> > > > Don't post if you don't know.
> > > >
> > > > scott
> > >
> > >
> >
> >
>
>
So can I plug my table saw into it or what?
"BruceR" <[email protected]> wrote in message
news:[email protected]...
> Al Reid wrote:
> > "BruceR" <[email protected]> wrote in message
> I said.
> >
> >
> >>208 volt service is derived from 120 volt three phase "wye" power where
> >>one pole from each phase is tied together. Neutral is connected to this
> >
> >
> > Actually it is the other way around. 120V single phase is derrived from
a
> > 208V 3 phase Y connected transformer.
> >
> >
>
> My bad, the stated voltage is the maximum pole to pole voltage
>
> For those interested, the diagram at the bottom of the page details this.
>
>
http://www.eatonelectrical.com/unsecure/html/101basics/Module04/Output/TransformerConfigurations.html
>
> -Bruce
>
>
>
> -----= Posted via Newsfeeds.Com, Uncensored Usenet News =-----
> http://www.newsfeeds.com - The #1 Newsgroup Service in the World!
> -----== Over 100,000 Newsgroups - 19 Different Servers! =-----
"LostInSpace" <mkochschREMOVE@THIS_1234.shaw.THISTOO.ca> wrote in message
news:pidUb.403143$ts4.116675@pd7tw3no...
> It tests around 115 on each side therefore not 208. Someone I know called
it
> a 208, they were wrong. Thx.
That is not adequate; 208a will test about 115v to ground on each also. You
have to test hot to hot.
208v has two 120v hots 120 degrees out of phase. Between them they are
208v.
240v has two 120v hots 180 degrees out of phase. Between them they are
240v. (strictly speaking they are not out of phase, but it is close enough
to the truth for this purpose.)
"gabriel" <[email protected]> wrote in message
news:[email protected]...
> Toller wrote:
>
> > Table saw don't ordinarily need a neutral, though the magnetic switch
> > on mine does.(don't ask...)
>
> It will need a neutral if it also has a 110V device (such as a light bulb,
> for example).
>
> Also I read somewhere that some new regs require 4-conductor wiring for
all
> 220V outlets. However, I do not have a reliable source for that statement
> (nor do I know if it applied to just outlets or devices as well), take it
> as a rumor I suppose.
>
You only need 4 wires (3 conductors and a ground) if you have something that
actually needs the neutral; such as a table saw with a 120v light bulb (?).
Otherwise you only need 3 wires.
My dryer puts 7a into the ground (technically an "uninsulated neutral")
which is a little spooky, but I have never heard of anyone having a problem;
which could result if the neutral connection broke somehow and energized the
case.
If I'm not mistaken you can't have true 208 without 3 phase power, i.e 3
hots coming into your house. Most US residences will have 2 hots which is
correctly referred to as single phase 220 service. This is what you've got.
probably a heater or a dryer.
Any electricians confirm this?
"Scott Lurndal" <[email protected]> wrote in message
news:[email protected]...
> [email protected] (Greg) writes:
> >208 is just a generic name. In a regular US home that will have 240v on
it (AKA
> >220,230).
> >You can look here to see what it really is
> >
> >http://www.quail.com/nema.cfm
>
> 208 is anything but a generic name.
>
> And it is entirely possible that some newer residential
> environments (especially multifamily homes) will have 208
> service (which is _NOT_ the same as 220).
>
> Don't post if you don't know.
>
> scott
Hmm, usually when they speak 208 they are talking 3-phase. Don't usually
see this in a house.
Well unless your in Barcelona and then it's 280 with the usual brown out :)
mark
"LostInSpace" <mkochschREMOVE@THIS_1234.shaw.THISTOO.ca> wrote in message
news:BX9Ub.400032$X%5.251472@pd7tw2no...
> I recently move to a new home. One plug in the garage wasn't wired with an
> outlet yet. It appeared on the panel as "Heater" and has two breakers. I
> think it's what they call a 208 volt heater plug (why 208?) Are these
> common? Can I use it as a 220 instead (Table Saw)? There doesn't appear to
> be a neutral only two hots. I'm guessing 12 gauge wire. Thx.
>
>
Because you don't need one. 220V is two 110 legs....180 degrees out of
phase. If you measured the voltage between either leg and neutral it would
be 110V, but between both hot legs, it is 220V. Some appliances (like a
dryer) require a neutral because some functions of the appliance (like the
light) run on 110V. On the inside, a dryer is really a hybrid device.
Basic motors and heater are not hybrids; they don't need 110, therefore do
not need a neutral.
Steve
"LostInSpace" <mkochschREMOVE@THIS_1234.shaw.THISTOO.ca> wrote in message
news:xrcUb.390803$JQ1.33407@pd7tw1no...
> It's two, 110~120's 15amps each and a ground.What's it for. Can I use it
for
> a 220 table saw? Why no neutral? Thx.
>
>
> "Scott Lurndal" <[email protected]> wrote in message
> news:[email protected]...
> > [email protected] (Greg) writes:
> > >208 is just a generic name. In a regular US home that will have 240v on
> it (AKA
> > >220,230).
> > >You can look here to see what it really is
> > >
> > >http://www.quail.com/nema.cfm
> >
> > 208 is anything but a generic name.
> >
> > And it is entirely possible that some newer residential
> > environments (especially multifamily homes) will have 208
> > service (which is _NOT_ the same as 220).
> >
> > Don't post if you don't know.
> >
> > scott
>
>
gabriel wrote:
> Toller wrote:
>
>> Table saw don't ordinarily need a neutral, though the magnetic switch
>> on mine does.(don't ask...)
>
> It will need a neutral if it also has a 110V device (such as a light
> bulb, for example).
>
> Also I read somewhere that some new regs require 4-conductor wiring
> for all 220V outlets. However, I do not have a reliable source for
> that statement (nor do I know if it applied to just outlets or
> devices as well), take it as a rumor I suppose.
It all depends on the AHJ. 220 V receps inside house need a neutral, 220
outside such as in a garage don't need neutral per the building inspector
here in Phoenix and that only covers new installations. Existing 220V still
only requires 2 hot and a ground.
Gary
Lost,
The bus bars kind if zig zag inside the pannel so that adjacent slots (one
over the other), by design, connect to apposing bus bars.
-Steve
"LostInSpace" <mkochschREMOVE@THIS_1234.shaw.THISTOO.ca> wrote in message
news:oSdUb.403319$ts4.50588@pd7tw3no...
> Does it matter that the breakers are both on the left hand side of the
> panel? Not one on the left and one on the right? Does that mean both lines
> are coming in to the plug on the same phase? And not 180 degrees out?
You stated in another post that you have ~240V line-line. Assuming it has
the correct plug/receptacle combination, it sounds like you should be good
to go.
"LostInSpace" <mkochschREMOVE@THIS_1234.shaw.THISTOO.ca> wrote in message
news:JGeUb.403460$ts4.107751@pd7tw3no...
> So can I plug my table saw into it or what?
>
> "BruceR" <[email protected]> wrote in message
> news:[email protected]...
> > Al Reid wrote:
> > > "BruceR" <[email protected]> wrote in message
> > I said.
> > >
> > >
> > >>208 volt service is derived from 120 volt three phase "wye" power
where
> > >>one pole from each phase is tied together. Neutral is connected to
this
> > >
> > >
> > > Actually it is the other way around. 120V single phase is derrived
from
> a
> > > 208V 3 phase Y connected transformer.
> > >
> > >
> >
> > My bad, the stated voltage is the maximum pole to pole voltage
> >
> > For those interested, the diagram at the bottom of the page details
this.
> >
> >
>
http://www.eatonelectrical.com/unsecure/html/101basics/Module04/Output/TransformerConfigurations.html
> >
> > -Bruce
> >
> >
> >
> > -----= Posted via Newsfeeds.Com, Uncensored Usenet News =-----
> > http://www.newsfeeds.com - The #1 Newsgroup Service in the World!
> > -----== Over 100,000 Newsgroups - 19 Different Servers! =-----
>
>
By the chart it's a 2 pole 3 wire 250V (two 15 amp breakers) thx. So it's
for a heater, right?
"Greg" <[email protected]> wrote in message
news:[email protected]...
> 208 is just a generic name. In a regular US home that will have 240v on it
(AKA
> 220,230).
> You can look here to see what it really is
>
> http://www.quail.com/nema.cfm
You can have true 208V single phase without 3 phase power being supplied.
Line-to-Line is 208 V and Line to Neutral is 120 V.
However, in my experience, it is highly unusual to have 3 phase power
supplied to a residence. The most common US residential service is 120/240.
"Crayon" <[email protected]> wrote in message
news:[email protected]...
> If I'm not mistaken you can't have true 208 without 3 phase power, i.e 3
> hots coming into your house. Most US residences will have 2 hots which is
> correctly referred to as single phase 220 service. This is what you've
got.
> probably a heater or a dryer.
>
> Any electricians confirm this?
> "Scott Lurndal" <[email protected]> wrote in message
> news:[email protected]...
> > [email protected] (Greg) writes:
> > >208 is just a generic name. In a regular US home that will have 240v on
> it (AKA
> > >220,230).
> > >You can look here to see what it really is
> > >
> > >http://www.quail.com/nema.cfm
> >
> > 208 is anything but a generic name.
> >
> > And it is entirely possible that some newer residential
> > environments (especially multifamily homes) will have 208
> > service (which is _NOT_ the same as 220).
> >
> > Don't post if you don't know.
> >
> > scott
>
>
Yep 6-15P. It worked. Thx.
"Roy Smith" <[email protected]> wrote in message
news:[email protected]...
> In article <emcUb.400349$X%5.254254@pd7tw2no>,
> "LostInSpace" <mkochschREMOVE@THIS_1234.shaw.THISTOO.ca> wrote:
>
> > By the chart it's a 2 pole 3 wire 250V (two 15 amp breakers) thx. So
it's
> > for a heater, right?
>
> What's the number? I'm guessing from your description that it's a
> 6-15R? If so, that's exactly what you need for plugging a typical 3HP
> 220V cabinet saw into.
On Wed, 4 Feb 2004 15:34:33 -0500, "Stephen M"
<[email protected]> wrote:
>Because you don't need one. 220V is two 110 legs....180 degrees out of
>
>
>Basic motors and heater are not hybrids; they don't need 110, therefore do
>not need a neutral.
>
>Steve
>
>"LostInSpace" <mkochschREMOVE@THIS_1234.shaw.THISTOO.ca> wrote in message
>news:xrcUb.390803$JQ1.33407@pd7tw1no...
>> It's two, 110~120's 15amps each and a ground.What's it for. Can I use it
>for
If I remember correctly, 208 volts is derived from two legs of a 120
volt, three phase supply. 208 = (120) (sqrt 3)
Joe
I'm an electrician living in Canada. Pay attention to that.
120V=115V=110V. These are the same voltage. Single phase. Used in a
house, everywhere.
220V-240V are the same. Single phase also. Used only for bake oven and
dryer
208V is the voltage of a 3 phase circuit. I suggest you go outside and
check out the wire(s) that connect your house.
If the wire has 3 wires, 2 black cover wires and an uncovered aluminum
ground wired, it is the single phase one 120/240. Every house has this
one.
If the wire has 4 wires, 3 black cover wires and an uncovered aluminum
ground wired, it is the 3 phase voltage 208V.
You can have both of them connected to your house. It is rare but it
can happen. Pay attention to that.
Also, you can't replace 208V by 220V. It's not the same thing at all.
I suggest you call someone who knows well electricity (an electrician)
before attempting to do something with it, if you don't want to burn
any electric things.
Cool
Does it matter that the breakers are both on the left hand side of the
panel? Not one on the left and one on the right? Does that mean both lines
are coming in to the plug on the same phase? And not 180 degrees out?
"Al Reid" <[email protected]> wrote in message
news:[email protected]...
> You can have true 208V single phase without 3 phase power being supplied.
> Line-to-Line is 208 V and Line to Neutral is 120 V.
>
> However, in my experience, it is highly unusual to have 3 phase power
> supplied to a residence. The most common US residential service is
120/240.
>
>
> "Crayon" <[email protected]> wrote in message
> news:[email protected]...
> > If I'm not mistaken you can't have true 208 without 3 phase power, i.e 3
> > hots coming into your house. Most US residences will have 2 hots which
is
> > correctly referred to as single phase 220 service. This is what you've
> got.
> > probably a heater or a dryer.
> >
> > Any electricians confirm this?
> > "Scott Lurndal" <[email protected]> wrote in message
> > news:[email protected]...
> > > [email protected] (Greg) writes:
> > > >208 is just a generic name. In a regular US home that will have 240v
on
> > it (AKA
> > > >220,230).
> > > >You can look here to see what it really is
> > > >
> > > >http://www.quail.com/nema.cfm
> > >
> > > 208 is anything but a generic name.
> > >
> > > And it is entirely possible that some newer residential
> > > environments (especially multifamily homes) will have 208
> > > service (which is _NOT_ the same as 220).
> > >
> > > Don't post if you don't know.
> > >
> > > scott
> >
> >
>
>
It tests around 115 on each side therefore not 208. Someone I know called it
a 208, they were wrong. Thx.
"Toller" <[email protected]> wrote in message
news:[email protected]...
>
> "LostInSpace" <mkochschREMOVE@THIS_1234.shaw.THISTOO.ca> wrote in message
> news:xrcUb.390803$JQ1.33407@pd7tw1no...
> > It's two, 110~120's 15amps each and a ground.What's it for. Can I use it
> for
> > a 220 table saw? Why no neutral? Thx.
> >
> Table saw don't ordinarily need a neutral, though the magnetic switch on
> mine does.(don't ask...)
> Two 120v wires can mean either 240v or 208v.
>
> It would be very unusual to have 208v in a home, so it is probably 240v
and
> is probably okay; but if it really is 208v you could burn the motor out.
> It is prudent to test it with a voltmeter and/or check with your utility
to
> make certain.
>
>
"Toller" <[email protected]> wrote:
> 240v has two 120v hots 180 degrees out of phase. Between them they are
> 240v. (strictly speaking they are not out of phase, but it is close enough
> to the truth for this purpose.)
Out of phase is as good and reasonable a description as anything else.
In article <emcUb.400349$X%5.254254@pd7tw2no>,
"LostInSpace" <mkochschREMOVE@THIS_1234.shaw.THISTOO.ca> wrote:
> By the chart it's a 2 pole 3 wire 250V (two 15 amp breakers) thx. So it's
> for a heater, right?
What's the number? I'm guessing from your description that it's a
6-15R? If so, that's exactly what you need for plugging a typical 3HP
220V cabinet saw into.
In article <oSdUb.403319$ts4.50588@pd7tw3no>,
"LostInSpace" <mkochschREMOVE@THIS_1234.shaw.THISTOO.ca> wrote:
> Does it matter that the breakers are both on the left hand side of the
> panel? Not one on the left and one on the right? Does that mean both lines
> are coming in to the plug on the same phase? And not 180 degrees out?
You breaker box bus bars are designed so that every other slot going
down each side are on alternate busses. Go to your local Home Depot or
whatever and look at one of the circuit breaker panel boxes on display.
Once you see one opened up and empty, it'll all make sense.
It's at ground level next to my garage door. It's gotta be a heater at 220 V
"Crayon" <[email protected]> wrote in message
news:[email protected]...
> If I'm not mistaken you can't have true 208 without 3 phase power, i.e 3
> hots coming into your house. Most US residences will have 2 hots which is
> correctly referred to as single phase 220 service. This is what you've
got.
> probably a heater or a dryer.
>
> Any electricians confirm this?
> "Scott Lurndal" <[email protected]> wrote in message
> news:[email protected]...
> > [email protected] (Greg) writes:
> > >208 is just a generic name. In a regular US home that will have 240v on
> it (AKA
> > >220,230).
> > >You can look here to see what it really is
> > >
> > >http://www.quail.com/nema.cfm
> >
> > 208 is anything but a generic name.
> >
> > And it is entirely possible that some newer residential
> > environments (especially multifamily homes) will have 208
> > service (which is _NOT_ the same as 220).
> >
> > Don't post if you don't know.
> >
> > scott
>
>
It's two, 110~120's 15amps each and a ground.What's it for. Can I use it for
a 220 table saw? Why no neutral? Thx.
"Scott Lurndal" <[email protected]> wrote in message
news:[email protected]...
> [email protected] (Greg) writes:
> >208 is just a generic name. In a regular US home that will have 240v on
it (AKA
> >220,230).
> >You can look here to see what it really is
> >
> >http://www.quail.com/nema.cfm
>
> 208 is anything but a generic name.
>
> And it is entirely possible that some newer residential
> environments (especially multifamily homes) will have 208
> service (which is _NOT_ the same as 220).
>
> Don't post if you don't know.
>
> scott