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25 volt system
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<blockquote data-quote="Brad Weber" data-source="post: 58015" data-attributes="member: 114"><p>Re: 25 volt system</p><p></p><p></p><p>Both are 'constant voltage' systems, there are also 100V and 140V systems, although more common outside the US or for systems with extremely long runs.</p><p></p><p></p><p>Class C would be referring to the specifics of the stranding for the individual conductors. I believe that starting with NEC 2008, when using Class C or Class D conductors for power cables it is required to use connectors and terminations listed for fine stranded conductors. This is intended to prevent or limit damage to the strands in the conductors and cold flow at the terminations.</p><p></p><p>Or were you actually referencing the wiring Class? Recent model amps should indicate on the rear panel whether the output is considered Class 1, 2 or 3 and most 70V amps would typically be Class 2 or 3.</p><p></p><p>Or is the issue a combination, such as worrying about the stranding only if it relates to a power, rather than a power limited or low voltage, wiring Class? Maybe someone else knows the answer to that.</p></blockquote><p></p>
[QUOTE="Brad Weber, post: 58015, member: 114"] Re: 25 volt system Both are 'constant voltage' systems, there are also 100V and 140V systems, although more common outside the US or for systems with extremely long runs. Class C would be referring to the specifics of the stranding for the individual conductors. I believe that starting with NEC 2008, when using Class C or Class D conductors for power cables it is required to use connectors and terminations listed for fine stranded conductors. This is intended to prevent or limit damage to the strands in the conductors and cold flow at the terminations. Or were you actually referencing the wiring Class? Recent model amps should indicate on the rear panel whether the output is considered Class 1, 2 or 3 and most 70V amps would typically be Class 2 or 3. Or is the issue a combination, such as worrying about the stranding only if it relates to a power, rather than a power limited or low voltage, wiring Class? Maybe someone else knows the answer to that. [/QUOTE]
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