Can someone shed some light on as to why 366.56A allows a much larger than fill than 366.22A?
X xformer Senior Member Location Dallas, Tx Occupation Master Electrician May 7, 2014 #1 Can someone shed some light on as to why 366.56A allows a much larger than fill than 366.22A?
augie47 Moderator Staff member Location Tennessee Occupation State Electrical Inspector (Retired) May 7, 2014 #2 I assume they are simply allowing room for your tap device. Certainly would make sense with something like a distribution block. That one spot would do little toward overheating insulation whereas an entire gutter filled to 75% would.
I assume they are simply allowing room for your tap device. Certainly would make sense with something like a distribution block. That one spot would do little toward overheating insulation whereas an entire gutter filled to 75% would.