You are designing distribution for a seven unit townhouse with in slab conduits. What is the MINIMUM number of 27 mm (1 in) rigid PVC Type 2 or metallic conduit that is required to satisfy…

The correct answer is D. Seven. Seven conduits are required because the code mandates a minimum of one dedicated 27 mm conduit per dwelling unit for in-slab distribution - ensuring each of the seven units has its own independent, permanent pathway before the concrete is poured. Options A (three), B (four)…

Residential Cabling Distribution Design

Question

You are designing distribution for a seven unit townhouse with in slab conduits. What is the MINIMUM number of 27 mm (1 in) rigid PVC Type 2 or metallic conduit that is required to satisfy distribution to each unit?

Options

AThree
BFour
CFive
DSeven
EFourteen

How the community answered

(32 responses)

A
6% (2)
B
3% (1)
C
3% (1)
D
72% (23)
E
16% (5)

Explanation

Seven conduits are required because the code mandates a minimum of one dedicated 27 mm conduit per dwelling unit for in-slab distribution - ensuring each of the seven units has its own independent, permanent pathway before the concrete is poured. Options A (three), B (four), and C (five) all fall short of this requirement and would leave some units without a code-compliant dedicated conduit. Option E (fourteen, or two per unit) exceeds the minimum threshold - while adding redundancy is good practice, the question asks for the minimum, not the recommended. Option D satisfies the one-conduit-per-unit rule exactly.

Memory tip: Think "one unit, one pipe" - the minimum conduit count always matches the unit count for in-slab townhouse distribution.

Topics

#in-slab conduit design#multi-unit residential#distribution pathways#conduit requirements

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