You might be up against a brick wall. It'll certainly help for you to talk to them and come across as (at least) somewhat informed and coscientious.If you were a legit theater space I am pretty sure these issues would not be issues. But a church is a space/operation where it may be common sense (to folks like inspectors) to err on the side of safety.In my experience when designing sound systems for new concert halls there often is opposition (from both electrical engineers and contractors) to the concept and practice of the isolated-ground technical power system. One can usually make them see that these are perfectly safe, but not without a bit of a struggle. Sometimes larger power companies (serving larger minicipalities) have a "special branch" which deals with (among other oddities) audio power systems for performance spaces and they get it from the start.All this to say that ultimately your inspector calls the shots and if he/she doesn't have an open mind and you cannot convince them that you need to do things a certain way *and* things are safe, there is no way around it........other than a hit man or a generous bribe ;-)
The inspectors are looking at a set design/build which moved every light fixture in the joint (about 30), and will be in place for only 3 months.
and that "extension" cords are universally unacceptable for anything non-temporary
I suspect some mis-communication in the information you got.
Hi all, We recently had a surprise visit from our local fire dept who has cited a number of issues and I wonder if there might be a bit of wisdom out thereI (the TD) unfortunately was not called when they showed up, and so our admin staff and musical director walked with the inspection team. The inspectors are looking at a set design/build which moved every light fixture in the joint (about 30), and will be in place for only 3 months.The citation actually and quite literally lists "electrical" as a complete description of what is wrong and what to fix with the electrics.What was verbally relayed was that:power cords must be groundedanything plugged into the wall should go through a surge protectorand that "extension" cords are universally unacceptable for anything non-temporaryThey wanted us to have conduit-ed outlets at every single device needing electricity.In reality, all voltage is 120, branch circuits breakers are 20amps and the AC cables are u-ground nema 5-15p plugs plugged into 5-15r or 5-20r duplexes. With only 1 exception all the AC "extensions" are 12-3 SJOOW cable and that exception branches (to supply several LED RGB lights) from a molded 12-3 e-string with a breaker built in.They also disliked all electrical connections that occurred behind or under fire retardant treated drapes.I doubt that they were told some of the facts, and they certainly didn't look at the cable gauge/type of jackets. I have a rematch scheduled in the coming week and I'm looking for any good info or preparation I can do. I think they may have seen black XLR/DMX/Ethernet and thought they were used for typical AC.If they get their way, I'll end up with a 6x6 grid of conduit on the walls and floor! My current plan is to provide an onstage 208 y supply of 3 phase 5 wire cam lock feeding a distro such as the 12 circuit version here (http://www.dimmerrack.com/5d.html). But if a cable can't be used to extend that power, it won't be too useful.
And what is an "extension?" AC through a mic cable? 3 amps through a 16ga orange cord? 18A in 12ga SOOW? Most of these lights are powered via IEC cables.... the factory ones are 6 feet long and each protected by a fuse in the IEC socket. Molded IEC cables could easily be purchased up to 50 feet long. Instead of getting a true power distro for this space, we could have a contractor install a large number of 5-15 duplexes on each circuit already run to the stage area and make home runs for each lighting fixture, aviom, and wireless transmitter... feels more smart ass, but closer to the letter of the inspector's desires.
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