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From: Jon on 8 Aug 2010 10:50
The electrical service goes to the house. There are 3 underground 000
cables that go to the barn from the house. The barn has a 60 amp breaker in
the breaker box at the house. The 12,000 watt generator is in the barn. It
has a 50 amp 240vac outlet, a 30 amp 240vac outlet and several others. I am
hooking the 50 amp outlet to the house. I am using the same 3 underground
000 cables to send generator power to the house during a power outage.

A 90 amp contactor in the barn won't connect the generator to the house
unless:
1. The electrical service to the house is off, and
2. The service disconnect switch at the house is off.

When the generator is turned on, it tests the service disconnect at the
house to assure the above two conditions are met. This is done by sending a
1 second electrical pulse to the house to see if it will actuate a coil. If
the coil actuates, the 90 amp contactor latches open and prevents backfeed
into the grid. If the service power turns on during that 1 second, the
generator power and service power will clash and throw a 50 amp breaker to
the generator.

http://jons-math.bravehost.com/transfer.html



From: a7yvm109gf5d1 on 8 Aug 2010 12:07
On Aug 8, 9:50 am, "Jon" <jon8...(a)peoplepc.com> wrote:
> The electrical service goes to the house.  There are 3 underground 000
> cables that go to the barn from the house.  The barn has a 60 amp breaker in
> the breaker box at the house.  The 12,000 watt generator is in the barn..  It
> has a 50 amp 240vac outlet, a 30 amp 240vac outlet and several others.  I am
> hooking the 50 amp outlet to the house.  I am using the same 3 underground
> 000 cables to send generator power to the house during a power outage.
>
> A 90 amp contactor in the barn won't connect the generator to the house
> unless:
> 1. The electrical service to the house is off, and
> 2. The service disconnect switch at the house is off.
>
> When the generator is turned on, it tests the service disconnect at the
> house to assure the above two conditions are met.  This is done by sending a
> 1 second electrical pulse to the house to see if it will actuate a coil.  If
> the coil actuates, the 90 amp contactor latches open and prevents backfeed
> into the grid.  If the service power turns on during that 1 second, the
> generator power and service power will clash and throw a 50 amp breaker to
> the generator.
>
> http://jons-math.bravehost.com/transfer.html

Don't forget to add an alarm clock with a "95 decimal" fire alarm bell.
From: Martin Riddle on 8 Aug 2010 17:08


<a7yvm109gf5d1(a)netzero.com> wrote in message
news:5469413c-d7e8-487c-843d-55cb7fa633f8(a)d17g2000yqb.googlegroups.com...
> On Aug 8, 9:50 am, "Jon" <jon8...(a)peoplepc.com> wrote:
>> The electrical service goes to the house. There are 3 underground
>> 000
>> cables that go to the barn from the house. The barn has a 60 amp
>> breaker in
>> the breaker box at the house. The 12,000 watt generator is in the
>> barn. It
>> has a 50 amp 240vac outlet, a 30 amp 240vac outlet and several
>> others. I am
>> hooking the 50 amp outlet to the house. I am using the same 3
>> underground
>> 000 cables to send generator power to the house during a power
>> outage.
>>
>> A 90 amp contactor in the barn won't connect the generator to the
>> house
>> unless:
>> 1. The electrical service to the house is off, and
>> 2. The service disconnect switch at the house is off.
>>
>> When the generator is turned on, it tests the service disconnect at
>> the
>> house to assure the above two conditions are met. This is done by
>> sending a
>> 1 second electrical pulse to the house to see if it will actuate a
>> coil. If
>> the coil actuates, the 90 amp contactor latches open and prevents
>> backfeed
>> into the grid. If the service power turns on during that 1 second,
>> the
>> generator power and service power will clash and throw a 50 amp
>> breaker to
>> the generator.
>>
>> http://jons-math.bravehost.com/transfer.html
>
> Don't forget to add an alarm clock with a "95 decimal" fire alarm
> bell.

Jon's place,

<http://video.google.com/videoplay?docid=4249107557479989822#docid=8919546410668248657>

Cheers



From: Jasen Betts on 9 Aug 2010 07:02
On 2010-08-08, Jon <jon8338(a)peoplepc.com> wrote:
> The electrical service goes to the house. There are 3 underground 000
> cables that go to the barn from the house. The barn has a 60 amp breaker in
> the breaker box at the house. The 12,000 watt generator is in the barn. It
> has a 50 amp 240vac outlet, a 30 amp 240vac outlet and several others. I am
> hooking the 50 amp outlet to the house. I am using the same 3 underground
> 000 cables to send generator power to the house during a power outage.

sampe problem same solution.

> A 90 amp contactor in the barn won't connect the generator to the house
> unless:
> 1. The electrical service to the house is off, and
> 2. The service disconnect switch at the house is off.
>
> When the generator is turned on, it tests the service disconnect at the
> house to assure the above two conditions are met. This is done by sending a
> 1 second electrical pulse to the house to see if it will actuate a coil. If
> the coil actuates, the 90 amp contactor latches open and prevents backfeed
> into the grid.

sounds unlikely to work.

> If the service power turns on during that 1 second, the
> generator power and service power will clash and throw a 50 amp breaker to
> the generator.

if you're lucky.


--- news://freenews.netfront.net/ - complaints: news(a)netfront.net ---
From: PeterD on 9 Aug 2010 08:57
On Sun, 8 Aug 2010 17:08:08 -0400, "Martin Riddle"
<martin_rid(a)verizon.net> wrote:

>
>
><a7yvm109gf5d1(a)netzero.com> wrote in message
>news:5469413c-d7e8-487c-843d-55cb7fa633f8(a)d17g2000yqb.googlegroups.com...
>> On Aug 8, 9:50 am, "Jon" <jon8...(a)peoplepc.com> wrote:
>>> The electrical service goes to the house. There are 3 underground

>>
>> Don't forget to add an alarm clock with a "95 decimal" fire alarm
>> bell.
>
>Jon's place,
>
><http://video.google.com/videoplay?docid=4249107557479989822#docid=8919546410668248657>
>
>Cheers
>
>

Great shot of Jon's barn...
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