4.16 kV Manhole Splice

Status
Not open for further replies.

DMG_1

Member
Location
Boston, MA, USA
Does anyone know of space requirements for making 4.16 kV splices in a manhole, for example manhole must be 4'(W) x 4'(L) x 6'(H)? I have checked National Grid construction guidelines and I cannot find anything. NG specifies the dimensions of new manholes but nothing on space requirements for splicing. The problem I have is that I need to make a splice in a manhole on a particular site and the manhole is 4'(W) x 4'(L) x 6'(D) which is smaller than what is specified for new work.

Thanks.
 

Julius Right

Senior Member
Occupation
Electrical Engineer Power Station Physical Design Retired
If the manhole is far from accessible way- roads , parking or other- and if it is possible to work from outside you may use a handhole. However from our experience for medium voltage cable it is not convenient.
If the worker has to get down into the manhole you have to proceed as per NESC[in my opinion]:
NESC Rule 323. Manholes, handholes, and vaults. B Dimensions.
Our practice-in power stations-is a minimum 1950 mm[6.5'] wide and 2200mm[7.5'] depth.
 
Status
Not open for further replies.
Top