Unhappy kitties......

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Message 982361 - Posted: 22 Mar 2010, 1:10:04 UTC

Well...
A small ray of sunshine for the kitties.

Got up the nerve to hook power back up to the 920 rig, the one that was involved in the first meltdown before all heck broke loose.

It was NOT the culprit, but a victim. It fired back up and after sorting some cabling that got disturbed in the melee, it is back online.

Guess that's a kinda big ray of sunshine at this point.

The other 5 rigs are gonna stay down until I can get that rewiring project accomplished.
"Time is simply the mechanism that keeps everything from happening all at once."

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Message 982370 - Posted: 22 Mar 2010, 17:57:06 UTC - in response to Message 982361.  

Well...
A small ray of sunshine for the kitties.

Got up the nerve to hook power back up to the 920 rig, the one that was involved in the first meltdown before all heck broke loose.

It was NOT the culprit, but a victim. It fired back up and after sorting some cabling that got disturbed in the melee, it is back online.

Guess that's a kinda big ray of sunshine at this point.

The other 5 rigs are gonna stay down until I can get that rewiring project accomplished.

COOL!!!!Glad to hear it Mark. All will be good and I will watch my back for you. LOL
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Message 983138 - Posted: 24 Mar 2010, 17:31:28 UTC

Just got back from a shopping trip to Meownard's.
Picking up supplies for the new service drop to the crunchers.
Sure I forgot something, but I'm not sure what.
About $230.00 later, I headed home with......

Square D 6 position breaker box
50' 6/3 w/ground NM cable to run from the main panel to the subfeed
1 50amp 2 pole breaker to install in the main panel to feed the subfeed
6 15amp 1 pole breakers for the subfeed, 1 for each branch
50' 12/2 w/ground NM cable to cut up into 6 pieces, 1 for each branch
6 metal handy boxes w/duplex outlet covers
6 P&S 15a duplex outlets
Misc. box connectors and staples
and a 7/8" bit to bore through the living room floor.

So, I'll end up with 50amps of 240v, split into 6 15amp 120v duplex outlets in metal boxes, each at the end of about 7' of 12/2 cable.
About 10,800 watts on tap to feed the crunchers. All properly circuit breaker protected and grounded.

"Time is simply the mechanism that keeps everything from happening all at once."

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Message 983148 - Posted: 24 Mar 2010, 17:47:47 UTC - in response to Message 983138.  
Last modified: 24 Mar 2010, 17:49:21 UTC

Just got back from a shopping trip to Meownard's.
Picking up supplies for the new service drop to the crunchers.
Sure I forgot something, but I'm not sure what.
About $230.00 later, I headed home with......

Square D 6 position breaker box
50' 6/3 w/ground NM cable to run from the main panel to the subfeed
1 50amp 2 pole breaker to install in the main panel to feed the subfeed
6 15amp 1 pole breakers for the subfeed, 1 for each branch
50' 12/2 w/ground NM cable to cut up into 6 pieces, 1 for each branch
6 metal handy boxes w/duplex outlet covers
6 P&S 15a duplex outlets
Misc. box connectors and staples
and a 7/8" bit to bore through the living room floor.

So, I'll end up with 50amps of 240v, split into 6 15amp 120v duplex outlets in metal boxes, each at the end of about 7' of 12/2 cable.
About 10,800 watts on tap to feed the crunchers. All properly circuit breaker protected and grounded.

15A on 12/2? Here I have 20A on 12/2(outlets and breakers), I'm looking at getting a 20A power strip(Tripp Lite TLM615NC20 6-Outlet Power Strip (15/20 Amp)). I was told by the electrical contractor that I paid, that 12/2 will handle a 20A circuit.
Savoir-Faire is everywhere!
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Message 983151 - Posted: 24 Mar 2010, 17:54:02 UTC

It cost you $230 for all the hardware? You should be able to save that much on your power bill while your getting this set up. I went over the list at it looks like you didn't forget anything and your selection of parts seems to all be on the conservative side.
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Message 983152 - Posted: 24 Mar 2010, 17:54:25 UTC - in response to Message 983148.  

Just got back from a shopping trip to Meownard's.
Picking up supplies for the new service drop to the crunchers.
Sure I forgot something, but I'm not sure what.
About $230.00 later, I headed home with......

Square D 6 position breaker box
50' 6/3 w/ground NM cable to run from the main panel to the subfeed
1 50amp 2 pole breaker to install in the main panel to feed the subfeed
6 15amp 1 pole breakers for the subfeed, 1 for each branch
50' 12/2 w/ground NM cable to cut up into 6 pieces, 1 for each branch
6 metal handy boxes w/duplex outlet covers
6 P&S 15a duplex outlets
Misc. box connectors and staples
and a 7/8" bit to bore through the living room floor.

So, I'll end up with 50amps of 240v, split into 6 15amp 120v duplex outlets in metal boxes, each at the end of about 7' of 12/2 cable.
About 10,800 watts on tap to feed the crunchers. All properly circuit breaker protected and grounded.

15A on 12/2? Here I have 20A on 12/2(outlets and breakers), I'm looking at getting a 20A power strip(Tripp Lite TLM615NC20 6-Outlet Power Strip (15/20 Amp)). I was told by the electrical contractor that I paid, that 12/2 will handle a 20A circuit.

That is correct....14 gauge is adequate for a 15 amp circuit. And homes are normally wired with 12 gauge for 20 amp branch circuits.
I simply oversized it to keep voltage drop to a minimum. And for 50' of wire, the difference between 12 and 14 was not much.
"Time is simply the mechanism that keeps everything from happening all at once."

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Message 983155 - Posted: 24 Mar 2010, 17:59:15 UTC - in response to Message 983148.  

Just got back from a shopping trip to Meownard's.
Picking up supplies for the new service drop to the crunchers.
Sure I forgot something, but I'm not sure what.
About $230.00 later, I headed home with......

Square D 6 position breaker box
50' 6/3 w/ground NM cable to run from the main panel to the subfeed
1 50amp 2 pole breaker to install in the main panel to feed the subfeed
6 15amp 1 pole breakers for the subfeed, 1 for each branch
50' 12/2 w/ground NM cable to cut up into 6 pieces, 1 for each branch
6 metal handy boxes w/duplex outlet covers
6 P&S 15a duplex outlets
Misc. box connectors and staples
and a 7/8" bit to bore through the living room floor.

So, I'll end up with 50amps of 240v, split into 6 15amp 120v duplex outlets in metal boxes, each at the end of about 7' of 12/2 cable.
About 10,800 watts on tap to feed the crunchers. All properly circuit breaker protected and grounded.

15A on 12/2? Here I have 20A on 12/2(outlets and breakers), I'm looking at getting a 20A power strip(Tripp Lite TLM615NC20 6-Outlet Power Strip (15/20 Amp)). I was told by the electrical contractor that I paid, that 12/2 will handle a 20A circuit.

With only a 50 amp feed he is keeping each leg to 45 amps total. He has to reduce the number of outlets or bump up the feed to the box. I am sure he knows what the drain is on all his systems so he is trading outlet power for more outlets. It appears his goal is to eliminate all power strips which was what got him into trouble in the first place.

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Message 983156 - Posted: 24 Mar 2010, 17:59:44 UTC - in response to Message 983151.  

It cost you $230 for all the hardware? You should be able to save that much on your power bill while your getting this set up. I went over the list at it looks like you didn't forget anything and your selection of parts seems to all be on the conservative side.

Well, I certainly didn't want to set it up and be pushing things to the limit right away again....LOL.
Yeah, it was $230.00 for the materials. About half of that was for the copper. The rest of the bits really weren't all that bad.
My advantage is that I have done residential electrical work in the past and don't have to pay somebody to come and install it.
"Time is simply the mechanism that keeps everything from happening all at once."

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Message 983158 - Posted: 24 Mar 2010, 18:05:16 UTC - in response to Message 983156.  

It cost you $230 for all the hardware? You should be able to save that much on your power bill while your getting this set up. I went over the list at it looks like you didn't forget anything and your selection of parts seems to all be on the conservative side.

Well, I certainly didn't want to set it up and be pushing things to the limit right away again....LOL.
Yeah, it was $230.00 for the materials. About half of that was for the copper. The rest of the bits really weren't all that bad.
My advantage is that I have done residential electrical work in the past and don't have to pay somebody to come and install it.


I think many who wish to be serious crunchers have electrical/electronic backgrounds. You are right that is can save a huge chunk of change, and you can custom design what you need. It sounds like you are going to put an end to your power problems once and for all.
Warning, addicted to SETI crunching!
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Message 983159 - Posted: 24 Mar 2010, 18:06:09 UTC - in response to Message 983155.  
Last modified: 24 Mar 2010, 18:07:06 UTC

Just got back from a shopping trip to Meownard's.
Picking up supplies for the new service drop to the crunchers.
Sure I forgot something, but I'm not sure what.
About $230.00 later, I headed home with......

Square D 6 position breaker box
50' 6/3 w/ground NM cable to run from the main panel to the subfeed
1 50amp 2 pole breaker to install in the main panel to feed the subfeed
6 15amp 1 pole breakers for the subfeed, 1 for each branch
50' 12/2 w/ground NM cable to cut up into 6 pieces, 1 for each branch
6 metal handy boxes w/duplex outlet covers
6 P&S 15a duplex outlets
Misc. box connectors and staples
and a 7/8" bit to bore through the living room floor.

So, I'll end up with 50amps of 240v, split into 6 15amp 120v duplex outlets in metal boxes, each at the end of about 7' of 12/2 cable.
About 10,800 watts on tap to feed the crunchers. All properly circuit breaker protected and grounded.

15A on 12/2? Here I have 20A on 12/2(outlets and breakers), I'm looking at getting a 20A power strip(Tripp Lite TLM615NC20 6-Outlet Power Strip (15/20 Amp)). I was told by the electrical contractor that I paid, that 12/2 will handle a 20A circuit.

With only a 50 amp feed he is keeping each leg to 45 amps total. He has to reduce the number of outlets or bump up the feed to the box. I am sure he knows what the drain is on all his systems so he is trading outlet power for more outlets. It appears his goal is to eliminate all power strips which was what got him into trouble in the first place.

Correct....I have a little headroom on the feeder....which again, will keep the voltage drop down as well. All the rigs and the chiller will be able to plug into their own receptacle (9 out of the 12), and the power strips will only be used for the multiple wall worts powering video splitters, the modem, router, etc., and the monitor...low power devices with very light loading.

A few chosen rigs will first go through the 2 1500 watt UPS's that I have.
"Time is simply the mechanism that keeps everything from happening all at once."

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Message 983160 - Posted: 24 Mar 2010, 18:13:40 UTC - in response to Message 983158.  
Last modified: 24 Mar 2010, 18:14:23 UTC

It cost you $230 for all the hardware? You should be able to save that much on your power bill while your getting this set up. I went over the list at it looks like you didn't forget anything and your selection of parts seems to all be on the conservative side.

Well, I certainly didn't want to set it up and be pushing things to the limit right away again....LOL.
Yeah, it was $230.00 for the materials. About half of that was for the copper. The rest of the bits really weren't all that bad.
My advantage is that I have done residential electrical work in the past and don't have to pay somebody to come and install it.


I think many who wish to be serious crunchers have electrical/electronic backgrounds. You are right that is can save a huge chunk of change, and you can custom design what you need. It sounds like you are going to put an end to your power problems once and for all.

The main thing is being able to walk out of the house to go to work not having to worry if the kitties are safe. That last failure scared the heck out of me.
Power strips carry a 15 amp UL rating....but they will not carry that full load 24/7 without failing eventually.

The kitties must be safe.
"Time is simply the mechanism that keeps everything from happening all at once."

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Message 983167 - Posted: 24 Mar 2010, 18:35:57 UTC - in response to Message 983138.  

Just got back from a shopping trip to Meownard's.
Picking up supplies for the new service drop to the crunchers.
Sure I forgot something, but I'm not sure what.
About $230.00 later, I headed home with......

Square D 6 position breaker box
50' 6/3 w/ground NM cable to run from the main panel to the subfeed
1 50amp 2 pole breaker to install in the main panel to feed the subfeed
6 15amp 1 pole breakers for the subfeed, 1 for each branch
50' 12/2 w/ground NM cable to cut up into 6 pieces, 1 for each branch
6 metal handy boxes w/duplex outlet covers
6 P&S 15a duplex outlets
Misc. box connectors and staples
and a 7/8" bit to bore through the living room floor.

So, I'll end up with 50amps of 240v, split into 6 15amp 120v duplex outlets in metal boxes, each at the end of about 7' of 12/2 cable.
About 10,800 watts on tap to feed the crunchers. All properly circuit breaker protected and grounded.

Guess the only Firemen you will meet will be ones you want to meet. Awesome, could step up to 20 Amp if ever needed but as is will be Totally Safe!
Now we won't have to worry about singed Kitty hair, it stinks.
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Message 983173 - Posted: 24 Mar 2010, 19:16:38 UTC

Ok, anyone wanna take bets on how long he goes before he's bought enough more stuff to have to do this all over again?? :-)


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Message 983179 - Posted: 24 Mar 2010, 19:37:10 UTC - in response to Message 983173.  

Ok, anyone wanna take bets on how long he goes before he's bought enough more stuff to have to do this all over again?? :-)

The way this is set up he will pop breakers before anything gets warm. On top of that he has a few extra outlets left over. I think it will be a long time before he pushes this to the limits.

If you saw his other thread on this subject, it was a problem waiting to happen. He had extension cords and power strips all over the place trying to find the power he needs. Now his farm will all be on this connection and all the old overloaded outlets will go unused.
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Message 983181 - Posted: 24 Mar 2010, 19:38:51 UTC - in response to Message 983179.  

... all the old overloaded outlets will go unused.

I think that's what the bet is about ;-)
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Message 983190 - Posted: 24 Mar 2010, 19:55:33 UTC

On top of that he has a few extra outlets left over.


How long can he go before he gets all these extra outlets filled up and extension cords running again? :-)


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Message 983195 - Posted: 24 Mar 2010, 20:04:01 UTC - in response to Message 983190.  
Last modified: 24 Mar 2010, 20:39:28 UTC

On top of that he has a few extra outlets left over.


How long can he go before he gets all these extra outlets filled up and extension cords running again? :-)

Do you have any idea how much heat is generated by 10,000 watts? Most of the small space electric space heaters they sell in the store are only about 1000 watts. Your talking 10 space heaters in his farm room. He should be able to leave the door open in the dead of winter and still stay warm so I think it will be self limiting.
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Message 983196 - Posted: 24 Mar 2010, 20:06:08 UTC - in response to Message 983160.  

It cost you $230 for all the hardware? You should be able to save that much on your power bill while your getting this set up. I went over the list at it looks like you didn't forget anything and your selection of parts seems to all be on the conservative side.

Well, I certainly didn't want to set it up and be pushing things to the limit right away again....LOL.
Yeah, it was $230.00 for the materials. About half of that was for the copper. The rest of the bits really weren't all that bad.
My advantage is that I have done residential electrical work in the past and don't have to pay somebody to come and install it.


I think many who wish to be serious crunchers have electrical/electronic backgrounds. You are right that is can save a huge chunk of change, and you can custom design what you need. It sounds like you are going to put an end to your power problems once and for all.

The main thing is being able to walk out of the house to go to work not having to worry if the kitties are safe. That last failure scared the heck out of me.
Power strips carry a 15 amp UL rating....but they will not carry that full load 24/7 without failing eventually.

The kitties must be safe.

Sounds good, Me I'd have to have the two 20A outlets moved closer to My desk and have one 15A type outlet on the countertop(above the dishwasher) looked at as It's always seemed a bit flaky, Sometimes the outlet would provide juice and other times, nothing, right now It's just used for a light, not for a PC, a monitor and a light.
Savoir-Faire is everywhere!
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Message 983216 - Posted: 24 Mar 2010, 20:59:38 UTC - in response to Message 983148.  

15A on 12/2? Here I have 20A on 12/2(outlets and breakers), I'm looking at getting a 20A power strip(Tripp Lite TLM615NC20 6-Outlet Power Strip (15/20 Amp)). I was told by the electrical contractor that I paid, that 12/2 will handle a 20A circuit.

If your only goal is to meet code, then 14/2 is just fine for a 15a branch.

... but among other things, code does not anticipate drawing more than 12a continuous on a 15a circuit.

Running 12/2 adds another margin of safety.

Around here, 100' of 14/2 is about $35, while 100' of 12/2 is a shade over $50.

Cheap insurance.
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Message 983222 - Posted: 24 Mar 2010, 21:04:33 UTC - in response to Message 983216.  

15A on 12/2? Here I have 20A on 12/2(outlets and breakers), I'm looking at getting a 20A power strip(Tripp Lite TLM615NC20 6-Outlet Power Strip (15/20 Amp)). I was told by the electrical contractor that I paid, that 12/2 will handle a 20A circuit.

If your only goal is to meet code, then 14/2 is just fine for a 15a branch.

... but among other things, code does not anticipate drawing more than 12a continuous on a 15a circuit.

Running 12/2 adds another margin of safety.

Around here, 100' of 14/2 is about $35, while 100' of 12/2 is a shade over $50.

Cheap insurance.

Also, this is about SIZING. The circuits should be sized based on the "nameplate" power for each power supply because the system could theoretically draw that much power during start up or other "events."

... and all of the computers on a circuit could "spike" at the same instant. Unlikely, but if you assume that you'd be safe.

Circuits should be sized for the absolute worst case, even if it is very unlikely.
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