A ampme Member Feb 4, 2009 #1 What is the minimum size 75deg C transformer secondary conductor not over 7.5 m long for a 480 volt primary to 208 volt secondary transformer supplied by a 100 ampere primary overcurrent device?
What is the minimum size 75deg C transformer secondary conductor not over 7.5 m long for a 480 volt primary to 208 volt secondary transformer supplied by a 100 ampere primary overcurrent device?
augie47 Moderator Staff member Location Tennessee Occupation State Electrical Inspector (Retired) Feb 4, 2009 #2 sounds like a test question. Look in 240.21 and tell us what you think.
cadpoint Senior Member Location Durham, NC Occupation Electrician - but not by NC Law. Feb 4, 2009 #3 How about the reminder of 110.14 (C)(1) (which includes all of itself) or 110.14 (C)(1)(b)(1 & 2)...