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Forums >> Revit Systems >> Technical Support >> One light fixture, two circuits?

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Tue, Jun 24, 2008 at 7:08:43 PM | One light fixture, two circuits?




Joined: Mon, Jun 23, 2008
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3 Stars: 1 Votes

We are in the process of implementing Revit MEP 2008 in our office and just one day into building families I've run into an issue. Is it possible to have, as the subject states, a light fixture going to 2 separate circuits? The fixture in question has 6 lamps with 3 on each circuit. Is this possible or am I out of luck? Any help would be greatly appreciated.

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Thu, Jul 3, 2008 at 9:34:16 PM | One light fixture, two circuits?




Joined: Mon, May 12, 2008
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This is only the beginning... 

Theoretically it's possible. When you create or modify content, you can add multiple "Electrical Connections" and change their attributes all you want. It even allows you to select a connector when you try to circuit the fixture, but it doesn't work. It still ties everything together. The only "work-around" I've found is to draw the circuits yourself and use whatever your other program for panel schedules is. Chances are you're not going to be able to use Revit's panel schedules because something will go wrong.

Get used to the term work-around. It's going to become very familiar to you. Revit is in no way ready electrically. Our firm continues to say yes to clients asking for our work to be done in Revit and it's driving me crazy. Like everything else, electrical is treated with the least amount of urgency. You can finish a job, but it's going to be extremely difficult to do it all in Revit. We've had to do panel schedules with our other software and we ended up using MicroStation for some things.

Keep the Tylenol handy... You're going to need it!

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Mon, Jul 14, 2008 at 2:18:24 PM | One light fixture, two circuits?




Joined: Mon, Jul 14, 2008
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I'm by no means extremely knowkledgable in Revit, so take my advice with a grain of salt;

 By shear lack of knowledge, I once tied one piece of electrical equipment/lighting to one circuit, and an entirely different piece to another circuit without realizing it. I then wired the two pieces together. This added two arrows to the circuit leaders (untied/connected wire endings) coming off of both pieces of wiring. I had inadvertantly double-circuited them.

 If you were to do this, then break the circuits between the two pieces, it will keep the double-circuit. This is assuming you only want to double-circuit one piece of lighting/equipment. If you had a circuit with more than one piece of lighting/equip. then disregard breaking the connections. You probably can't specify exactly which lamps go to which circuits; that'd have to be addressed separately with the contractor, but for the purposes of your drawing, it should be sufficient.

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