Are single phase 120/208V panels common?

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CelectricB

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Location
Texas Panhandle
Occupation
MEP Designer
Is there anything unusual to look out for when designing a 3 phase 120/208V distribution system with single phase subpanels. I just don't recall seeing single phase 208V panels very often and wondering why that might be.
 

infinity

Moderator
Staff member
Location
New Jersey
Occupation
Journeyman Electrician
In apartment complexes they are the norm. 208Y/120, 3Ø panels with 120/208, 1Ø feeders to each apartment panel.
 

jim dungar

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Staff member
Location
Wisconsin
Occupation
PE (Retired) - Power Systems
You would typically use a 120/240V single phase 3wire panel on 120/208 single phase 3 wire circuit. Panels are labeled, by manufacturers, with their maximum permissable voltage not what they are actually installed on.
 
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LarryFine

Master Electrician Electric Contractor Richmond VA
Location
Henrico County, VA
Occupation
Electrical Contractor
For line-to-neutral loads, there is no difference.

For line-to-line loads, heating loads will operate at 75%. Others must be suitable for 208/240v or 208v.
 
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