Author Topic: 400amp Single Breaker Panel  (Read 2075 times)

duevelocita

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400amp Single Breaker Panel
« on: November 11, 2011, 01:37:58 AM »
I have a 5000 now, but am moving to another house which has one 400amp main panel. Not just 400amp service, but all in one panel. It's not clear to me if any of the TED solutions works in this configuration. Am I wrong? Any guidance or suggestions?

TIA.

SherlockOhms

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Re: 400amp Single Breaker Panel
« Reply #1 on: November 15, 2011, 09:37:24 PM »
The MTU is only rated up to 200amp. But you may want to look at how the actual wiring is ran into that panel.  A lot of times they will run two parallel conductors per-phase  into the 400amp panel instead of single fat cable per-phase. If you have parallel conductors you can put the CT's around one of the pairs and apply a 2.0 calibration factor to KW for the MTU under advanced drop menu.  If you have single solid conductor running into the panel then you will not be able to use the system.  The CT's are not rated for that and in any case the CT will not fit around the cable as it will be a #1/0 size.