Temp Light & Power

A

Alwayslearningelec

Senior Member
Location
NJ
Occupation
Estimator
Good morning. Pretty big foot print here and have eight floor like this. They want price for each building( the 3 quandrants).

They are doing a complete demo of interior of building starting at the top floor and working down. It's a budget right now. A few questions.

1. What type of tools/equipment would be needed by other trades for demolition/gut? Trying determine if I would just need light stringers will drops for tools or additional power.
2. This question depends on power requirements but if only stringers and drops required would you have a temp riser for each quadrant/building with a panel in each quadrant/building on every other floor?
3. Don't think you would use existing power for temp if they are doing a complete demo, correct?
4. Thinking I can get all temp in then just kill the existing power at the main service.

Any other insight would be appreciated. Thanks

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Is the existing power panels on each floor to remain and be reused? If the old panels are being demolished too along with their associated feeders then you would likely need your own separate temp riser system. The last few jobs we stopped using temp stringers for demo and opted for clusters of laundry drops and temp LED high bay style lights.

01200Wx1200H
 
infinity said:
Is the existing power panels on each floor to remain and be reused? If the old panels are being demolished too along with their associated feeders then you would likely need your own separate temp riser system. The last few jobs we stopped using temp stringers for demo and opted for clusters of laundry drops and temp LED high bay style lights.

01200Wx1200H
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Can you explain what you mean about your setup on last few jobs. You'd still have Romex feeding your lights correct? But then separate Romex feed to laundry drops? How would you know where to place your laundry drops?
 
Alwayslearningelec said:
Can you explain what you mean about your setup on last few jobs. You'd still have Romex feeding your lights correct? But then separate Romex feed to laundry drops? How would you know where to place your laundry drops?
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Yes NM cable is used for the temps. One one job when MC and NM were the same price they used MC cable for the temps since it isn't required to be removed after use. You cab use 4-wire NM for two circuits, one for lighting the other for power or just separate 2-wire cables. The laundry drops just get spaced like every 50'. The demo guys will have their own extension cords. We've also used wobble lights that can be moved around as the demo takes place.
01200Wx1200H
 
infinity said:
Yes NM cable is used for the temps. One one job when MC and NM were the same price they used MC cable for the temps since it isn't required to be removed after use. You cab use 4-wire NM for two circuits, one for lighting the other for power or just separate 2-wire cables. The laundry drops just get spaced like every 50'. The demo guys will have their own extension cords. We've also used wobble lights that can be moved around as the demo takes place.
01200Wx1200H
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So the MC cable was left in place and used for what? Newly installed circuits later on?
 
So they actually told me we are to use the existing power for temp and to modify any existing power to use as temp. It will be done on a floor by floor basis.
They confirmed we are only providing temp light and laundry drops.

How they heck would I know what needs to be modified so we can use it as temp. Can't I just use spare circuits in the existing panel or make a few spare by basically disconnecting circuit?

I guess the existing riser to these panels is the issue? After done with one floor and move down to next floor the floor above power/riser would have to be de-energized I guess??
 
Sounds like they are leaving the existing service and riser panels so most likely all you need is some NM (or mc), lighting and laundry drops connecting them to the existing panel.
 
augie47 said:
Sounds like they are leaving the existing service and riser panels so most likely all you need is some NM (or mc), lighting and laundry drops connecting them to the existing panel.
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THey are and I agree but only things I'm thinking of is as we work down( yes we are going top down) and each floor above needs to be de-energized I don't know how the circuits/riser is arranged so that when we kill the power above could it affect the floor below panels?
 
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