4Basic_Materials_and_Methods_Homer_Housing_3419908.doc

4 - BASIC MATERIALS AND METHODS

4.1 DESCRIPTION

4.1.1 This section describes specific requirements, products, and methods of execution, which are typical throughout the electrical work of this project. Additional requirements for the specific systems may modify these requirements.

4.2 ACCESSIBILITY OF PRODUCTS

4.2.1 Arrange all work to provide access to all serviceable and/or operable products. Layout work to optimize net usable access space within confines of space available. Advise COR, in a timely manner, of areas where proper access cannot be maintained. Furnish layout drawings to verify this claim, if requested.

4.2.2 Provide access doors in ceilings, walls, floors, etc., for access to junction boxes, automatic devices, and all serviceable or operable equipment in concealed spaces.

4.3 FURNISHED MATERIALS AND EQUIPMENT

4.3.1 All materials furnished and installed in permanent construction shall be American made, new, full-weight, standard in every way, and in first class condition.

4.3.2 All materials shall conform with the standards of an organization acceptable to the authority having jurisdiction and concerned with product evaluation, that maintains periodic inspection of labeled equipment or materials and by whose labeling the manufacturer indicates compliance with appropriate standards or performance in a specified manner. Only materials designed for the purpose employed shall be used.

4.3.3 Materials shall be identical with apparatus or equipment that has been in successful operation for at least two years. All materials of similar class or service shall be of one manufacturer.

4.3.4 Capacities, sizes, and dimensions given are minimums unless otherwise indicated. All systems, materials and equipment proposed for use on this project shall be subject to review for adequacy and compliance with contract documents.

4.4 STORAGE AND HANDLING

4.4.1 All items shall be delivered and stored in original containers, which shall indicate manufacturer's name, the brand, and the identifying number. Items subject to moisture and/or thermal damage shall be stored in a dry, heated place. All items shall be covered and protected against dirt, water, chemical and/or mechanical damage.

4.5 PROTECTION OF MATERIAL AND EQUIPMENT

4.5.1 The Contractor shall be responsible for any and all materials and equipment to be installed under this contract. The Contractor shall make good at his own cost any injury or damage which said materials or equipment may sustain from any source or cause whatsoever before final acceptance.

4.6 INSTALLATION

4.6.1 Skilled craftsmen shall install all materials and equipment. The norms for execution of the work shall be in conformity with NEC Chapter 3 and the National Electrical Contractors' Association "National Electrical Installation Standards", which herewith is made part of these specifications.

4.6.2 Repair all surfaces and furnish all required material and labor to maintain fireproof, airtight and waterproof characteristics of the construction.

4.6.3 Installation of all equipment shall be in accordance with manufacturers' instructions.

4.7 CUTTING & PATCHING

4.7.1 Sleeves through floors and walls shall be galvanized steel pipe, flush with walls, ceilings or finished floors, sized to accommodate the raceway. Seal openings with UL Listed fire resistant resilient sealant.

4.8 FIRESTOPPING

4.8.1 Where electrical raceways or other features penetrate fire-rated building surfaces, they shall be securely sealed to the surrounding surface with 3M Fire Barrier Caulk No. CP25, Fire Barrier Putty No. 303, or as approved.

4.8.2 All firestopping shall be applied according to the manufacturer's recommendations, and in a manner that is listed by a nationally-recognized independent testing agency (such as UL) as preserving the fire time-rating of the construction.

4.9 PROTECTIVE FINISHES

4.9.1 Take care not to scratch or deface factory finish of electrical apparatus and devices. Repaint all marred or scratched surfaces.

4.9.2 Provide hot dip galvanized components for ferrous materials exposed to the weather.

4.10 TESTING

4.10.1 Prior to final test, all switches, devices, and fixtures shall be in place.

4.10.2 Test all new electrical systems. They shall be free from short circuits and unintentional grounds.

4.10.3 All feeder cables shall be megger tested prior to final termination. The megger test procedure shall be in accordance with the Appendix to Insulated Cable Engineers Association (ICEA) Standard (S-73-532). The test voltage shall be 1000 volts DC, applied for one minute. Replace all cables that do not satisfy ICEA Standards and the following requirement. The measured insulation resistance in megohms shall be greater than 2000 megohm-ft/circuit length in feet. Submit logs of test results.

4.10.4 Furnish one (1) copy of certified test results to the COR prior to final inspection.

4.11 CLEAN-UP AND COMMISSIONING

4.11.1 Throughout the work, the Contractor shall keep the work area reasonably neat and orderly by frequent periodic cleanups.

4.11.2 As independent parts of the installation are completed, they may be utilized during construction.

***END OF SECTION***

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01/23/8916050-5 Project No. 397240 Basic Materials and Methods