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The Basement
UL Who?
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<blockquote data-quote="TJ Cornish" data-source="post: 24482" data-attributes="member: 162"><p>Re: UL Who?</p><p></p><p>A non-exhaustive list of what's wrong:</p><p>THHN wire used outside an approved enclosure</p><p>Exposed Powercon terminals outside an approved enclosure</p><p>THHN wire in a cable clamp.</p><p></p><p>It's up to the inspector to determine what's legal (or close enough) or not in any situation, but generally speaking, the inside of a rack case does not qualify as an enclosure. This is true for several reasons - no mechanical protection of the mains wires, no barrier between mains voltage systems and low-voltage wire, and a flammable enclosure.</p><p></p><p>There is a boundary between premise wiring and appliance wiring. If this device is considered an appliance, it's likely that there would be need for a circuit breaker, among many other UL-mandated changes since they aren't governed by the NEC. If this is considered by the inspector du-jour as temporary power distribution, the rules may be closer to what the NEC requires.</p><p></p><p>Silas - I'm not entirely sure what your last paragraph means, but if you are considering this as something done by someone that knows code and conventions, I would suggest that this is pretty dangerous with two obvious shock hazards - the exposed Powercon terminals, and the metalic clamp on the THHN wire. Hopefully such a "knowledgeable" person would do a better job.</p></blockquote><p></p>
[QUOTE="TJ Cornish, post: 24482, member: 162"] Re: UL Who? A non-exhaustive list of what's wrong: THHN wire used outside an approved enclosure Exposed Powercon terminals outside an approved enclosure THHN wire in a cable clamp. It's up to the inspector to determine what's legal (or close enough) or not in any situation, but generally speaking, the inside of a rack case does not qualify as an enclosure. This is true for several reasons - no mechanical protection of the mains wires, no barrier between mains voltage systems and low-voltage wire, and a flammable enclosure. There is a boundary between premise wiring and appliance wiring. If this device is considered an appliance, it's likely that there would be need for a circuit breaker, among many other UL-mandated changes since they aren't governed by the NEC. If this is considered by the inspector du-jour as temporary power distribution, the rules may be closer to what the NEC requires. Silas - I'm not entirely sure what your last paragraph means, but if you are considering this as something done by someone that knows code and conventions, I would suggest that this is pretty dangerous with two obvious shock hazards - the exposed Powercon terminals, and the metalic clamp on the THHN wire. Hopefully such a "knowledgeable" person would do a better job. [/QUOTE]
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