200 amp upgrade

bonnette75December 30, 2009


thanks in advance for any help...

I have a two unit home, with two meters each feeding a main disconnect (double 40 amp breaker) which in turn feeds two very old panels (one for each unit)...

I would like to upgrade the existing service to 200 amps...

the power company is going to turn off the power so I can safely work...

question - if the upgrade is 200 amps does that mean that each unit gets 100 amps or do they both get the full 200 ? this will effect the size of the main disconnect breaker correct? (100 amps vs 200 amps) which in turn would effect the panels load capacity (100 amps vs 200 amps)

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I mean no offense by this comment, but it strikes me that you really need more than the answer to this question. The entirety of the current service needs to be evaluated by a professional before attempting a DIY upgrade. This is especially true because it is a multiple unit dwelling.

My guess -- and this is no more than guesswork -- is that two "very old panels", each of which are on 40-amp breakers, are very likely 60-amp panels. If that is the case, they cannot safely handle 100 amps, much less 200.

    Bookmark   December 30, 2009 at 9:30PM
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