W wireguru Senior Member Mar 12, 2009 #1 Can a sqd QO or NQ panel be used on 240v delta (corner grounded I believe, not a 120/240 high leg service)? Or only 120/240 or 120/208 systems?
Can a sqd QO or NQ panel be used on 240v delta (corner grounded I believe, not a 120/240 high leg service)? Or only 120/240 or 120/208 systems?
augie47 Moderator Staff member Location Tennessee Occupation State Electrical Inspector (Retired) Mar 12, 2009 #2 If I read the website catalog correctly, NO. The panels are listed for 1ph 3 wire or 3 pahse 4 wire and the branch breakers listed are slash-rated
If I read the website catalog correctly, NO. The panels are listed for 1ph 3 wire or 3 pahse 4 wire and the branch breakers listed are slash-rated
W wireguru Senior Member Mar 12, 2009 #3 augie47 said: If I read the website catalog correctly, NO. The panels are listed for 1ph 3 wire or 3 pahse 4 wire and the branch breakers listed are slash-rated Click to expand... Actually I just looked at the catalog, and QO is rated for the following uses 120 Vac, 1φ2W • 240/120 Vac delta, 3φ4W 120/240 Vac, 1φ3W • 240 Vac corner grounded delta, 3φ3W 240 Vac delta, 3φ3W • 208Y/120 Vac, 3φ4W 48 Vdc maximum (1φ convertible main lug 12–4 2 circuit only) heres the link http://ecatalog.squared.com/pubs/El...rs/QO Three Phase Load Centers/1100CT0501.pdf
augie47 said: If I read the website catalog correctly, NO. The panels are listed for 1ph 3 wire or 3 pahse 4 wire and the branch breakers listed are slash-rated Click to expand... Actually I just looked at the catalog, and QO is rated for the following uses 120 Vac, 1φ2W • 240/120 Vac delta, 3φ4W 120/240 Vac, 1φ3W • 240 Vac corner grounded delta, 3φ3W 240 Vac delta, 3φ3W • 208Y/120 Vac, 3φ4W 48 Vdc maximum (1φ convertible main lug 12–4 2 circuit only) heres the link http://ecatalog.squared.com/pubs/El...rs/QO Three Phase Load Centers/1100CT0501.pdf
augie47 Moderator Staff member Location Tennessee Occupation State Electrical Inspector (Retired) Mar 12, 2009 #4 glad you looked.... I thought I had, but obviously I did not look far enough. Thanks. (don't forget 240.85)
glad you looked.... I thought I had, but obviously I did not look far enough. Thanks. (don't forget 240.85)