Demo

[Alwayslearningelec]

We have work in a few bathrooms like this that are within a college so the floor footprint is large.

They are gutting the room and we’re installing new receptacles, lights, fire alarm etc.

They want us to connect all new work to existing circuits made availabe after demo.

A few questions.

1. How would you keep the fire alarm system active regarding the existing wiring when demo happens.
2. I’m sure there are adjacent areas that are feed from same circuit that feed the bathroom. In that case what would the approach be? Trace circuits, then modify the circuit to keep adjacent area active but somehow de-energize power to demo area? What would be best way to approach this? Think adjacent area would have to be temp'ed out of fed from same circuit as restrooms?

Thanks

 

[infinity]

Are you providing temp lights? The fire alarm devices typically get either removed and spliced through or just hung up in the air until the new cables can be pulled and swung over.

 

[Alwayslearningelec]

Are you providing temp lights? The fire alarm devices typically get either removed and spliced through or just hung up in the air until the new cables can be pulled and swung over.

Was thining about the temp light. Unsure at the moment. I mean we will need temp light but unsure whether the existing can be used as temp. Does that happen and what dicates?

 

[infinity]

Was thining about the temp light. Unsure at the moment. I mean we will need temp light but unsure whether the existing can be used as temp. Does that happen and what dicates?

Well often the existing lighting is 277 so you probably won't be using that for temp. You'll need a 120 volt circuit from somewhere.

 

[Barbqranch]

Or battery operated.

 

[Alwayslearningelec]

Well often the existing lighting is 277 so you probably won't be using that for temp. You'll need a 120 volt circuit from somewhere.

Why would the voltage matter for temporary lighting if you use the existing circuit?

 

[infinity]

Why would the voltage matter for temporary lighting if you use the existing circuit?

Are you going to be installing 277 volt temp lights?

 

[Alwayslearningelec]

Are you going to be installing 277 volt temp lights?

If we were going to install new temp lights it would be 120v. But possibly we could use eexisting lights for temp and also utilize the extg. circuit but you nmentioned not being able to use 277v for temp.

 

[John A]

Based on the drawing you included, existing look like fluorescent lay-ins or surface mount. Using them would not 'fly' IMHO. Most GC's and PM's will not allow it, especially at a college.

If the voltage is 277, there are many available multi-voltage temp LED/HID fixtures available, which are commonly used.