ATS layout

[blueheels2]

Pricing a generator and they have a 200 amp service with 6 “mains”.

Trying to think of the easiest way to do this but I haven’t done many of these.
Option 1- Set 200 amp ats to the right , set 200 amp breaker in this panel and nipple all branch ckts to a new panel on the right. I believe they make an ats/ panel combo I might could use?

Option 2. Set new meter to left, ats to left and change meter main to exterior panel.

Option 3 - new meter to left and ats, panel combo in place of current meter main.

What would yall do

 

[Birken Vogt]

I would normally do option 1 with an ATS that includes distribution. Don't need to involve the poco this way.

 

[VirutalElectrician]

I've seen enough ATS fail that I go this way: Meter with 200A disconnect -> ATS -> Distribution panel.

That ATS will fail before anything else, so make it as simple as possible. I hate the idea of an ATS as part of the panel. The disconnect before the ATS allows you to disconnect POCO power to service the ATS w/o involving the POCO.

 

[augie47]

What Code cycle is involved ?
You might have to entertain 230.85

 

[blueheels2]

What Code cycle is involved ?
You might have to entertain 230.85

2017

 

[hillbilly1]

I would normally do option 1 with an ATS that includes distribution. Don't need to involve the poco this way.

Will that panel take a 200? I don’t think that would be an option.

 

[Birken Vogt]

Will that panel take a 200? I don’t think that would be an option.

 

[hillbilly1]

View attachment 2581772

Can you get those in the states?

 

[hillbilly1]

Yep, big Orange has them on their website. That would be a tight fit for the wire.

 

[Seven-Delta-FortyOne]

Sq D also has a feed through lug kit, just like Eaton’s BRP 225.

 

[Birken Vogt]

Yep, big Orange has them on their website. That would be a tight fit for the wire.

IDK about the bend on the wire, but I have some recollection of a large Homeline breaker or subfeed kit with lug terminals positioned at 90 degrees as well.

Another thing I have done when a subfeed lug kit does not fit is to do a quick load calc, found that 125 is plenty of breaker for the whole house and fed the transfer switch with a 125 breaker. Or even a 100, then you get to use a smaller transfer switch.

 

[Ravenvalor]

What if you were to skip the ATS for an interlock kit? Don't know for sure whether or not it will work but it would save the customer some $.

 

[Birken Vogt]

That looks like a 6-main panel there.

 

[hillbilly1]

IDK about the bend on the wire, but I have some recollection of a large Homeline breaker or subfeed kit with lug terminals positioned at 90 degrees as well.

Another thing I have done when a subfeed lug kit does not fit is to do a quick load calc, found that 125 is plenty of breaker for the whole house and fed the transfer switch with a 125 breaker. Or even a 100, then you get to use a smaller transfer switch.

Yeah, a lot of newer residential services are way oversized. Reduced one 400 amp service to 200, everything was gas, including the heat. Biggest load was two A/C compressors at 20 amp a piece.