RF Shielded Room
- Thread starter ssilbers
- Start date
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zbang
Senior Member
- Location
- Roughly 5346 miles from Earls Court
Is the room or the set of filters a UL-listed assembly? If so, I don't think the NEC would apply. Most/all of the power filters I've seen are L+N, and the few shielded rooms I've worked on had only a couple of isolated 120v circuits (light/fan, bench 1, bench 2). The only thing common was the EGC.
The service to this room is 208Y/120V 60amp. Each filter assembly consists of 2 filters. We need to filter phase A, B, C & neutral. Therefore, 2 filter assemblies with 2 filters in each assembly. Each phase and/or neutral will penetrate the steel shield individually. The total shielded room is not UL listed. I guess if you looked at the total shielded room including the filters as a single piece of equipment, the NEC would not apply. The filter assembly is a UL listed piece of equipment.
petersonra
Senior Member
- Location
- Northern illinois
- Occupation
- engineer
Any reason you can't ran all four wires thru the housings on both filters and only connect the wires to the filters as appropriate?
hurk27
Senior Member
- Location
- Portage, Indiana NEC: 2008
ssilbers is this a government installation?
If so there are special specs that you will be required to follow, I have posted them before and will try to see if I can find them again, right now I'm so tired I cant even remember the name of the documents to even do a search for them but they are on the Internet, I just got in from a job and for the last few weeks been working very late just about every night, but I will try to find them if this is what I think it is.
If so there are special specs that you will be required to follow, I have posted them before and will try to see if I can find them again, right now I'm so tired I cant even remember the name of the documents to even do a search for them but they are on the Internet, I just got in from a job and for the last few weeks been working very late just about every night, but I will try to find them if this is what I think it is.
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