Transfer switch for existing switchboard

[electrofelon]

Hey guys, my client wants me to go Indiana (12 hours away) to finish a 400 kw generator install. Just trying to get a rough game plan. As you can see, it's a 2000A Siemens switchboard with a Pringle switch. Anyone happen to be familiar with these Siemens switchboards? Questions:

1. Is there metering below the service disconnect ? Doesn't seem like there's much room under there. There is an instrument meter on the exterior so it's definitely not metered at the transformer spades.

2. Any idea what fuse type this is likely to have? Service is 120/208 I suspect this is grossly oversized and may down grade it to make it easier.

3. Transfer switch is not service rated. Would have to intercept load side bussing. Can't think of anything else to do besides remove bussing between the load side of the switch and the distribution section and put lugs on. Seems like this isn't an uncommon thing, how is this typically done? Do manufacturers offer kits for this?

Thanks

 

[Elect117]

Did they send you photos of the siemens stickers on all sections?

Why is the pull section have like 6" more of depth than the distribution section? Doesn't that normally only happen when the distribution section is a lower ampacity? I am thinking they have smaller fuses than 2000A installed.

Is it UG feed or OH? I can't tell from the photo. It is kind of small and doesn't show if there is bus duct above the pull section.

 

[ron]

Will they let you change the name on the permit?

Where there ever Engineering Drawings for the project?

I've seen utility metering on the top of the Pringle switch section, but it would have a tag to prevent tamper. Maybe the utility metering is outside?

I would suggest NOT to mess with removing bussing between the load side of the switch and the distribution section as it is likely listed together.

 

[electrofelon]

Did they send you photos of the siemens stickers on all sections?

Why is the pull section have like 6" more of depth than the distribution section? Doesn't that normally only happen when the distribution section is a lower ampacity? I am thinking they have smaller fuses than 2000A installed.

Is it UG feed or OH? I can't tell from the photo. It is kind of small and doesn't show if there is bus duct above the pull section.

Yes I have all the stickers. I will send later, hard to do on my phone. Section 2 is 2000A supply, 1000A section. #3 is 1200A supply, 1200A Section. It could have 1200 amp fuses. I'll see if I can get demand data, but I'm guessing based on my experience with their other facilities, demand is somewhere around 400 to 500 amps.

 

[electrofelon]

Will they let you change the name on the permit?

Where there ever Engineering Drawings for the project?

I've seen utility metering on the top of the Pringle switch section, but it would have a tag to prevent tamper. Maybe the utility metering is outside?

I would suggest NOT to mess with removing bussing between the load side of the switch and the distribution section as it is likely listed together.

There will probably not be A permit for this. I don't care about listings and have no problem adding lugs and removing bussing. I'm an electrician not an installer. How would you typically insert a transfer switch in this case?

 

[electrofelon]

It's UG. It does seem odd
Maybe the line conductors loop up and over ?

 

[hillbilly1]

Hey guys, my client wants me to go Indiana (12 hours away) to finish a 400 kw generator install. Just trying to get a rough game plan. As you can see, it's a 2000A Siemens switchboard with a Pringle switch. Anyone happen to be familiar with these Siemens switchboards? Questions:

1. Is there metering below the service disconnect ? Doesn't seem like there's much room under there. There is an instrument meter on the exterior so it's definitely not metered at the transformer spades.

2. Any idea what fuse type this is likely to have? Service is 120/208 I suspect this is grossly oversized and may down grade it to make it easier.

3. Transfer switch is not service rated. Would have to intercept load side bussing. Can't think of anything else to do besides remove bussing between the load side of the switch and the distribution section and put lugs on. Seems like this isn't an uncommon thing, how is this typically done? Do manufacturers offer kits for this?

Thanks

The one I done in Indiana had a cabinet with the CT’s outside. Utility pulled to that point, customer was responsible for the load side. Yeah, since it’s not service rated, what you mentioned doing, is probably the only way. Do they have enough room for the transferswitch in the same room? Usually in that situation, we would use a service rated transferswitch outside intercepting the underground feed.