0 members (),
506
guests, and
19
robots. |
Key:
Admin,
Global Mod,
Mod
|
|
|
Joined: Oct 2000
Posts: 3,682 Likes: 3
OP
Administrator Member
|
|
|
|
|
Joined: Jan 2003
Posts: 4,391
Moderator
|
Nice looking rework. I do have a question, other than the unfused time clock feed whats wrong with shutting the whole panel down by time clock? Contactor controlled panels are common for lighting circuits.
Bob Badger Construction & Maintenance Electrician Massachusetts
|
|
|
|
Joined: Jan 2003
Posts: 4,391
Moderator
|
I do not want to seem critical here however do I see all the branch neutrals leaving the panel near the top and all the branch hots leaving from the bottom?
This can / will cause the metal enclosure of the panel itself to get warm or hot depending on the load carried by those conductors.
It is also a violation of 300.3(B).
Bob Badger Construction & Maintenance Electrician Massachusetts
|
|
|
|
Joined: Jun 2001
Posts: 161
Member
|
Unless the case is non-ferrous.
Mike Wescoatt
|
|
|
|
Joined: Oct 2004
Posts: 806
Member
|
iwire posted: I do have a question, other than the unfused time clock feed whats wrong with shutting the whole panel down by time clock? After wondering the same thing and looking at the new installation, my guess would be that the individual contactors on each group of parking circuits would tend to last longer, as the stress of load make/break is distributed instead of concentrated on one contactor. Also, failure of any one contactor would not leave the entire lot in the dark. Good call on the hot/neutral separation.
Stupid should be painful.
|
|
|
|
Joined: Dec 2000
Posts: 4,294
Member
|
This isn't a violation of300.3(B)
........contained within the same raceway, auxiliary gutter, cable tray, cablebus assembly, trench, cable, or cord.......
I don't see this as being any of the above. This is in an enclosure.
It is a violation of 300.20, though. "Induced Currents in Metal Enclosures or Metal Raceways"
|
|
|
|
Joined: Jan 2003
Posts: 4,391
Moderator
|
electure It is a violation of 300.20, though. "Induced Currents in Metal Enclosures or Metal Raceways" Good point, I gave the wrong reference. Bob [This message has been edited by iwire (edited 05-14-2005).]
Bob Badger Construction & Maintenance Electrician Massachusetts
|
|
|
Posts: 7,382
Joined: April 2002
|
|
|
|