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Old 08-27-2009, 03:38 AM   #1
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Main panel question


I have a 200 amp main panel located near the meter outside(?). I have a 100 amp sub panel located in the laundry room of my doublewide. I intend to install a tankless water heater, but there is not enough amperage from sub and the main panel is full. Anyone with any advice on how I can set this up? I have an electrician coming to check things out, but I want to be informed ahead of time. The tankless water heater is suggested to have 2 50 amp breakers. Thanks ahead of time.
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Old 08-27-2009, 04:54 AM   #2
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Main panel question


Your use of the term "doublewide" suggests that you live in a mobile home.

Are the outside boxes (meter box and disconnect) attached to the home, or separately mounted on a pedestal?

You might have to upgrade your inside panel in order to accommodate the increased load.

I do not believe that the Code allows for more than one feeder for a mobile home.
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Old 08-27-2009, 05:08 AM   #3
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Main panel question


My main panel and meter are on a pedestal. I am not sure how to do this any suggestions? I would like to have some prior knowledge before an electrician comes so I can understand what he/she may want to do. How much larger of a sub panel can i go to? The one currently is a 100 amp service.

Last edited by wyzord; 08-27-2009 at 05:14 AM. Reason: added a question
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Old 08-27-2009, 05:21 AM   #4
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Main panel question


You need to upgrade your inside panel to at least 200 Amps, and then replace the feeder wires with appropriate sized ones. Is the outside disconnect box a "feed through" type? Can you upload a picture of your pedestal assembly?
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Old 08-27-2009, 05:32 AM   #5
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Main panel question


Pictures are in my album I think.
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Old 08-27-2009, 05:50 AM   #6
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Yeah, that looks like a feed-through panel out there.

It should be suitable for a 200 amp feeder for your mobile home.
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