Manhole choices

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Jey-L

Member
Location
South Florida
Occupation
Electrical Engineer
Hello all,

Just a general opinion request on manhole selection. I generally dislike using a large manhole for small ductbanks, and would prfer to use a 3x3 or 4x4 pullbox with a (30" and 36" respectively) manhole cover. Would it be sensible to use cable racks in such a small box? How difficult would it be for the electrician to organize the cables given limited room (especially in the 3x3).

Bulk of my projects involves sharing space with underground piping, so it's beneficial to limit the size of undergorund boxes.

Also, anyone got any good pics showing cable training on the cable racks in a manhole (600V or less).
 

Jey-L

Member
Location
South Florida
Occupation
Electrical Engineer
Hello all,

Just a general opinion request on manhole selection. I generally dislike using a large manhole for small ductbanks, and would prfer to use a 3x3 or 4x4 pullbox with a (30" and 36" respectively) manhole cover. Would it be sensible to use cable racks in such a small box? How difficult would it be for the electrician to organize the cables given limited room (especially in the 3x3).

Bulk of my projects involves sharing space with underground piping, so it's beneficial to limit the size of undergorund boxes.

Also, anyone got any good pics showing cable training on the cable racks in a manhole (600V or less).

Also, would it be useful to specify custom (smaller size) octagonal/4-way vaults to aid cable management?
 
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