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Low Earth Orbit
Lighting & Electrical
Lighting system causes buzz/hum in the circuit breaker panels
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<blockquote data-quote="David Buckley" data-source="post: 64374" data-attributes="member: 2235"><p>Re: Lighting system causes buzz/hum in the circuit breaker panels</p><p></p><p></p><p></p><p>Nope, the issue is bad grounding.</p><p></p><p>If a sound system has a single consistent ground then you have a fighting chance of building a quiet system, in terms of interference. It doesn't matter what phases the system are on (myth: sound all needs to be on the same phase) or if you are on the same phase(s) as the lighting, a/c, elevators, motion control platforms or whatever (myth: sound need to be on a phase the lights don't use), you need the ground right.</p><p></p><p>Even if the building is riddled with bad bonds in all the wrong places, if you have a single ground point for sound you can still run clean. It's just much harder as, for reasons I noted above, just a DI box resting on the steel deck next to parcan can wreak havoc.</p><p></p><p>If the sound system is powered from several outlets around a facility then problems are likely. This happens universally in poorly thought through permanent installs.</p></blockquote><p></p>
[QUOTE="David Buckley, post: 64374, member: 2235"] Re: Lighting system causes buzz/hum in the circuit breaker panels Nope, the issue is bad grounding. If a sound system has a single consistent ground then you have a fighting chance of building a quiet system, in terms of interference. It doesn't matter what phases the system are on (myth: sound all needs to be on the same phase) or if you are on the same phase(s) as the lighting, a/c, elevators, motion control platforms or whatever (myth: sound need to be on a phase the lights don't use), you need the ground right. Even if the building is riddled with bad bonds in all the wrong places, if you have a single ground point for sound you can still run clean. It's just much harder as, for reasons I noted above, just a DI box resting on the steel deck next to parcan can wreak havoc. If the sound system is powered from several outlets around a facility then problems are likely. This happens universally in poorly thought through permanent installs. [/QUOTE]
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Lighting system causes buzz/hum in the circuit breaker panels
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