BEFORE THE ARCHITECT – E-PUBLICATIONS

Home Design Standards-Home Building Standards

Electrical Design Standards

Home Design Standards – Home Building Standards, 3Q10 Ed.      Page  390

a)     shall be an individual electrical circuit wiring

b)     shall be applied only to a unique, two-pole electrical load

c)      shall not be interconnected with any other electrical circuit wiring

Comment:  This prescript must be followed absolutely.  Of note in a two-pole electrical circuit wiring to supply a motor, the grounded conductor regularly carries bits of electrical energy back to its seat on the electrical distribution panel board.  Interconnecting the grounded conductor in a two-pole cable or harness with other grounded conductors can be a lethal mistake.

11)     The grounding neutral (often bare or with green insulation) shall be connected in parallel and not in series to each electrical device, i.e., one grounding conductor to each electrical device wherein each grounding conductor is securely tied to the line’s grounding conductor

a)     in an electrical outlet wiring of ganged electrical light switch controls and

b)     in an electrical outlet wiring of ganged electric receptacles, that is,

i)        an electrical device shall be pigtailed, or t-tapped, to its line

ii)      all conductors shall be pigtailed, or t-tapped

12)     Not less than 2-2 linear inch diameter solid, smooth, straight conduits

a)     shall extend from lowest level of a residence, including but not limited to a crawlspace or basement or on L1 on a slab-on-grade up to and into the attic of the residence

b)     shall be located

i)        as closely as possible to the electrical distribution panel board

ii)      physically accessible to conduit interiors from the electrical distribution panel board on finish

c)      shall be clearly identified at each terminus with bright coloring or other visually distinctive means

d)     shall serve as post-finish raceways for cable between levels 

i)        high-voltage in not less than one

ii)      low-voltage in not less than one.

Check all specifications with your local building authority before construction. Permission to quote with attribution. © 2000-2010 by Before The Architect(s). All rights reserved. www.beforethearchitect.com  July 2010, 3rd Quarter Ed.

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