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Condo/Apartment buildings #9859
05/15/02 02:38 PM
05/15/02 02:38 PM
P
pauluk  Offline OP
Member
Joined: Aug 2001
Posts: 7,520
Norfolk, England
Somebody mentioned in another thread about some apartment buildings being fed with 3-ph 120/208.

Bearing in mind that residential is normally 120/240, how is this handled? Do the apartments have a normal 3-wire panel connected to two of the three phases, or does each apartment have a 3-ph panel?

I see that higher-powered heaters are easily obtainable for 208, and that some are dual rated 208 & 240, but what about domestic appliances such as dryers and ranges that normally run on 240 volts? Are some special 208 versions available, or do you just accept the reduced output?

Same question for A/C units. I would think that normal 240V versions could have problems on the lower voltage.

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Re: Condo/Apartment buildings #9860
05/15/02 06:23 PM
05/15/02 06:23 PM
S
sparky  Offline
Member
Joined: Oct 2000
Posts: 5,342
Paul;
Siemens , as well as Milbank , and a variety of others make a 3 ph 4 wire condo-pack ( slang) that will meter 2 legs.

( you could probably cruise the links & request a catalog, there are usually some schematics..)

There are some problems stepping down to 208V, things that are uncooperative get small buck/boost x-formers..
[Linked Image]



[This message has been edited by sparky (edited 05-15-2002).]

Re: Condo/Apartment buildings #9861
05/16/02 04:49 PM
05/16/02 04:49 PM
P
pauluk  Offline OP
Member
Joined: Aug 2001
Posts: 7,520
Norfolk, England
Thanks. I see that Milbank have catalogs available in PDF for download.

I'll take a closer look later.


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