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Some of you have completed our Online Continuing Education Courses which include video instruction. For the rest of you we are sending a weekly series of newsletters featuring an instructional page complete with videos.

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Article 404 (380 in 1999 NEC) Low Res - Modem Hi Res - Cable/DSL        Page 2 of 5
Switches

404.8 Accessibility and Grouping

The text to this section was revised to read:

(B) Voltage Between Adjacent Devices. Snap switches shall not be grouped or ganged in enclosures with other snap switches, receptacles, or similar devices, if the voltage between adjacent devices exceeds 300V, unless they are installed in enclosures equipped with permanently installed barriers between adjacent devices. Figure 404-1

Intent: This rule in the 1999 NEC prohibited the ganging of switches in an outlet box if the voltage between them exceeded 300V. The text in the 2002 NEC prohibits the ganging of switches, receptacles and other devices in outlet boxes if the voltage between the devices exceed 300V.


Figure 404-1
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