On 2/14/2012 1:04 PM, Carl wrote:
>
>> There are no 4 prong outlets in my house so I guess I am doomed and also
>> damned as Im not going to rewire anything but the new appliance when and
>> if I need it.
I put in a new kitchen range. The old one had a 3 wire feed. The new
one, or course had 3 wires plus ground.
A 3 wire outlet plus a ground will work, as long as you don't have to
get it inspected. Most 3 wire outlets have the box grounded, so you
install a 4 prong outlet with the 4th going to ground. There are a lot
of 220 lines out there consisting of B,W,G, and bare. Course if you have
B,W, and bare...unfortunately.
It's easier to run another circuit in our house (ranch style with
basement) than it is in the shop where everything runs in conduit. Out
there I gotta make a 240 run the full length of the shop. Panel to
ceiling, cross over two other runs, then the length of the ceiling, and
down to the rotary phase converter (contactor, push button switches, and
emergency stop) There's a run within 3 feet of it, but it's already
powering both my 80 gallon air compressor and final amp. I really need
to run a second one for the amp.
73
Roger (K8RI)
>> Carl
>> KM1H
>>
>>
>> ----- Original Message -----
>> From: "Al Kozakiewicz"<akozak@hourglass.com>
>> To:<TexasRF@aol.com>;<km1h@jeremy.mv.com>;<ranchorobbo@gmail.com>;
>> <steve@dx4win.com>
>> Cc:<amps@contesting.com>
>> Sent: Tuesday, February 14, 2012 11:08 AM
>> Subject: RE: [Amps] Source for plate xfrmer
>>
>>
>> First off, NEC codes end at the outlet. An amp is an "appliance" and
>> would be covered by UL, which is entirely optional. There is nothing that
>> forbids such a practice - an electric range is a good example as the overn
>> elements are typically 240v, while the burners, controls and lamps are
>> 120v.
>>
>> The issue is that a range uses a 4 prong outlet - 2 x hot, neutral and
>> ground, while your typical amp/AC outlet is missing the neutral. You may
>> NOT connect your fan between a hot and the chassis ground, even though it
>> would be electrically rational. If the safety ground failed, the chassis
>> would then be at 120v with respect to ground.
>>
>> Al
>> AB2ZY
>>
>> ________________________________________
>> From: amps-bounces@contesting.com [amps-bounces@contesting.com] On Behalf
>> Of TexasRF@aol.com [TexasRF@aol.com]
>> Sent: Tuesday, February 14, 2012 10:54 AM
>> To: km1h@jeremy.mv.com; ranchorobbo@gmail.com; steve@dx4win.com
>> Cc: amps@contesting.com
>> Subject: Re: [Amps] Source for plate xfrmer
>>
>> I guess there is some electrical code that forbids connecting the 120vac
>> blower between one side of the 240ac line and neutral?
>>
>> I hope this doesn't start another round of ground vs neutral wiring sins.
>>
>> 73,
>> Gerald K5GW
>>
>>
>>
>>
>>
>>
>>
>> In a message dated 2/14/2012 9:41:22 A.M. Central Standard Time,
>> km1h@jeremy.mv.com writes:
>>
>> You can get more benefit with primary taps and not bothering with a pair
>> of
>> 120V windings; use a seperate 120V line for blowers, LV supplies, etc.
>>
>> Tapping the secondary limits your KVA as you go to lower voltages and who
>> the heck needs a CT in a big amp?
>>
>> Carl
>> KM1H
>>
>>
>> ----- Original Message -----
>> From: "Rob Atkinson"<ranchorobbo@gmail.com>
>> To: "Steve Bookout"<steve@dx4win.com>
>> Cc:<amps@contesting.com>
>> Sent: Monday, February 13, 2012 10:10 PM
>> Subject: Re: [Amps] Source for plate xfrmer
>>
>>
>>> In addition EPD makes a good product but plan on spending at least
>>> $400, perhaps more.
>>>
>>> http://epd-inc.com/
>>>
>>> How much are you prepared to spend? Because of the price of copper
>>> any custom plate iron you get that has some muscle is going to
>>> probably cost some coin. More if you want it potted and several taps.
>>> Even if you don't need them if you are paying for a custom job it's a
>>> good idea to get a CT on the secondary and of course one on the
>>> primary, plus a few more taps on the secondary. You may decide 4.25
>>> KV DC with a cap input filter is a bit high, or if not, extra taps
>>> afford different supply voltages and increase the versatility of the
>>> transformer and its resale value if you ever decide to let it go.
>>>
>>> 73
>>>
>>> Rob
>>> K5UJ
>>>
>>> On Mon, Feb 13, 2012 at 12:35 PM, Steve Bookout<steve@dx4win.com>
>> wrote:
>>>> Hello all,
>>>>
>>>> Where do you look for a new HV plate transformer these days?
>>>>
>>>> I understand Peter Dahl is no longer around.
>>>>
>>>> I'm looking for 3000 VAC secondary @ 1+ amp CCS.
>>>>
>>>> TIA
>>>>
>>>> 73 de Steve, NR4M
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