RCDD · Question #312
You have just finished a design calling for 15 telecommunications outlets. You received word that the owner has increased his requirements by 40%. What size commercial DD (distribution device) is…
The correct answer is C. 1346 mm (53 in). A 40% increase over 15 outlets yields 21 required outlets, which corresponds to a 1346 mm (53 in) commercial distribution device per standard sizing guidelines.
Question
You have just finished a design calling for 15 telecommunications outlets. You received word that the owner has increased his requirements by 40%. What size commercial DD (distribution device) is required to accommodate the increase?
Options
- A660 mm (26 in)
- B1015 mm (40 in)
- C1346 mm (53 in)
- D1676 mm (66 in)
How the community answered
(48 responses)- A8% (4)
- B17% (8)
- C71% (34)
- D4% (2)
Why each option
A 40% increase over 15 outlets yields 21 required outlets, which corresponds to a 1346 mm (53 in) commercial distribution device per standard sizing guidelines.
A 660 mm (26 in) DD is too small to properly accommodate 21 telecommunications outlet terminations with adequate cable management space.
A 1015 mm (40 in) DD does not provide sufficient termination capacity for the 21 outlets required after the 40% increase.
Increasing 15 telecommunications outlets by 40% results in 21 total outlets (15 x 1.4 = 21). Per telecommunications distribution standards, the commercial distribution device size required to terminate and manage 21 outlets is 1346 mm (53 in). This size provides adequate space for the terminations, cable management, and required slack within the enclosure.
A 1676 mm (66 in) DD exceeds the minimum size needed for 21 outlets and would be an oversized, unnecessarily large enclosure for this application.
Concept tested: Commercial distribution device sizing for outlet count
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