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Temporary Services

1. Service to the building.
2. Metering, main fused disconnect switch, current limiting fuses, grounding panel boards and feeder circuits.
3. Distribution throughout the building as required by local, state, and national codes.
4. Lighting system to satisfy (minimum) local, state, and national codes.
5. Power system, including branch wiring (separate from lighting) with ground wire and grounding type 120 volt 20 ampere ground type duplex convenience outlets, located as follows:
   a. for corridors - outlets on 50 foot centers;
   b. for other spaces - outlets shall be located so that the addition of a 50 foot extension cord will extend power to any area within the space.
   c. Maximum of four outlets per 20 ampere circuit.
6. Power to construction trailers and offices for lighting and air conditioning.
7. Labor for operation and maintenance of temporary heat systems shall be provided by the Mechanical Contractor except that labor for the operation and/or maintenance of electrical control and power systems shall be borne by the Electrical Contractor.
8. Testing and reporting per the latest OSHA Standards.

The following are suggested capacities for temporary light and power:

Gross Square Feet Capacity

Up to 50,000 100KVA
50,000 to 100,000 150 KVA
100,000 to 250,000 300 KVA
250,000 to 500,000 500 KVA
500,000 to 800,000 750 KVA

Each Prime Contractor shall:

1. Bear the cost for providing power and service to their equipment which cannot be served from the systems provided herein.

2. Provide their own extension cords.

3. Bear the cost for any additional lighting they may require for night work and reimburse the Electrical Contractor for any standby personnel per the current labor Contract.

4. Maintain their equipment.

5. Repair and refinish their own work which may have been damaged by removal of temporary system facilities.

When permanent service becomes available, The Electrical Contractor may connect the temporary system to the permanent service with the owner's approval.

The Electrical Contractor shall maintain the temporary system in working order throughout the period of construction. He shall replace burned-out and missing lamps.

The location of main temporary service and distribution equipment shall be coordinated with affected Prime Contractors on the project.

The temporary systems installed shall be in accordance with requirements of the Local Building codes and local regulations.

The Electrical Contractor shall make the necessary adjustments to the temporary systems to eliminate interruptions which occur as construction progresses.

At the completion of the construction and test period, the Electrical Contractor shall remove all temporary system facilities from the site and replace lamps, ballasts, etc., which are connected to the permanent system, as required.

Any contractor who fails to carry out his responsibility in supplying temporary light and power as set forth in this contract, shall be held responsible for such failure. The Owner shall have the right to take such action as he deems proper for the protection and conduct of the work, and shall deduct the cost involved from the amount due the Contractor at fault.


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TAGS: Prime Contractor and OSHA.

Glossary Terms for the Best Practices Guide


History of Recommendation:
Reviewed March, 2010
Revised April, 1987

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