96 circuit dimming rack

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Smart $

Smart $

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Ohio
justin59 said:
Hello everyone. Here's something that I've never been able to get a clear answer on: ETC (and probably others) makes a dimming rack with 48 dimming cards with 2 circuits each. How is this legal when the NEC limits 42 circuits per panel? Here's a link to the rack

http://www.etcconnect.com/docs/docs_downloads/datashts/7151L1001_Sensor__Std_Rack_Spec_Sht_vE.pdf
Click to expand...

A dimmer rack is not a panelboard... it is utilization equipment. Besides that, the 42 circuit panelboard restriction has been lifted as of the 2008 NEC.

PS: Welcome to the forum!!!
 
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infinity

infinity

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New Jersey
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Journeyman Electrician
I agree with Smart. We just installed 3 ETC dimming systems in the theater project I'm involved with. One being an ETC Sinewave with 48 dimming zones on one large rack.
 
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