Posted by mohamed jasimalmost 4 years ago
Annular space query
As per attached EJ, max.2 no’s of cable trays are allowed to pass through the wall assembly and annular space has mentioned min 1/2” to max 12”. As per the standards annular space should be measured form 4sides of the cable tray.
my query:-
1- where should I measure the max. annular space from Below CT to opening or top CT to opening?
kindly clarify
1 Reply
Posted by Alaaalmost 4 years ago
Dear Mr. Mohamed,
thanks for your query,
please note that annular gap can be measured from any part of the CT to the opening, and it shouldn't exceed the maximum that is mentioned on the EJ.
please let us know if you require more support.
Regards,
Alaa
2 comments on this reply
Posted by Alaaalmost 4 years ago
Dear Mr. Mohamed,
Please note that we specified two types of annular gaps (Between trays - Between trays & opening), you need to measure from the edges of each tray to the opening, and between the trays, so you don't exceed the limit mentioned in the EJ.
Hope it is clear now, let me know if you need further help.
Regards,
Alaa
Posted by mohamed jasimalmost 4 years ago
Dear sir,
In my case 2 cable tray passing through one opening, for this condition how should I measure max.annular space?
As per your comment if I measure from any cable tray then annular exceeds the limit as in mentioned in my EJ
Please kindly elaborate,