Attachment__2_-_General_Tech_Specs.pdf

SECTION XIIIa

ELECTRICAL SYSTEMS

13a.1 GENERAL DIRECTIVES AND REFERENCE NORMS

13a-1.1 Reference norms

The publications listed below are an integrative part of these specifications as applicable and in the version governing at the contract award.

Italian publications

- All applicable norms of the Comitato Elettrotecnico Italiano (CEI).

European publications

- All applicable norms of the European Committee for Electrotechnical Standardization

(CENELEC).

USA publications (civil and military ones)

- NFPA 70 National Electric Code

- NFPA 780 Installation of Lightning Protection System

- NFPA 101 Life Safety Code

- UFC 3-520-01 Unified Facilities Criteria – Interior Electrical Systems

- UFC 3-530-01 Unified Facilities Criteria – Interior and Exterior Lighting and Controls

- UFC 3-550-01 Unified Facilities Criteria – Exterior Electrical Power Distribution

- UFC 3-570-03N Unified Facilities Criteria – Power Distribution Systems

- UFC 3-570-02N Unified Facilities Criteria – Electrical Engineering Cathodic Protection

- UFC 1-200-02 Unified Facilities Criteria – High performance and sustainable building requirement

- UFC 4-010-01 Unified Facilities Criteria – DoD Minimum Antiterrorism Standards for

Buildings

- UFC 4-022-01 Unified Facilities Criteria – Security Engineering: Entry Control

Facilities/Access Control Points

International publications

- All applicable norms of the International Electrotechnical Commission (IEC).

In case of conflict between the norms listed above, the more stringent norms as to safety shall apply.

13a-1.2 Requirements of the firm installing the systems

The firm in charge of the installation shall have all the qualifications required by Decree n. 37 of

22 January 2008 “Regolamento concernente l’attuazione dell’articolo 11-quaterdecies, para. 13,

a) della legge n. 248 del 2 dicembre 2005, recante riordino delle disposizioni in materia di attivita’ di installatione degli impianti all’interno degli edifici” (regulations on implementation of article 11-quaterdecies, para. 13 a) of law n. 248 of 2 December 2005 for the modification of the requirements on the installation of systems inside buildings):

- The firm shall be inserted in the roll of firms as per Decree of the President of the Republic

7 December 1995, n. 581 and subsequent modifications, or in the Provincial Roll of handicraft firms as per law 8 August 1985, n. 443.

- The firm shall have all certifications acknowledging the technical-professional requirements, as per the models approved by Decree of the Minister of Industry, Trade and

Handicraft of 11 June 1992. In particular the firm shall have the authorization to work on systems as per letter “a” of article 1 of DM 37/08.

The installing firm shall provide the COR with all certifications mentioned above, attesting the suitability to the performance of the work.

13a-1.3 Statement of compliance

At the completion of the work and after the checks required by the governing norms, including the ones on the system operation, the firm in charge of the installation shall provide the COR with

2 copies on paper of the statement of compliance pertaining to the system installed as per the norms of article 6 of Decree n. 37 of 22 January 2008. The report containing the types of materials to be used, as well as the project as per article 5 of Decree n. 37, are part of the report, which has to be prepared as shown on enclosure I of the decree, as modified by DM 19 May 10

“Modifica degli allegati al decreto 22 gennaio 2008, n. 37, concernente il regolamento in materia di attivita’ di installazione degli impianti all’interno di edifici (modification to the enclosures of decree 22 January 2008, n. 37, on the regulation of installation of systems inside buildings).

Statements of compliance on different forms and/or lacking the pertaining documentation to be enclosed will not be accepted. In addition, the installing firm shall provide the COR with a .pdf file deriving from scanning the original statement, stamped and signed, with the enclosures.

13a-1.4 Materials to be installed

All electrical materials and equipments to be installed shall be in compliance and installed as indicated by the manufacturers or by the installing firms, and as indicated at paragraph 1.1, complete with CE brand. In no case the material, the equipment or the method of installation shall be inferior to the standards established by the latest edition of the applicable norms. The equipment defective or damaged during the installation or the final tests shall be replaced or repaired as approved by the COR. The contract drawings show the extension and general location of the system. If variations with respect to the contract drawings or to the specifications are deemed necessary by the contractor to make the system in compliance with the norms mentioned above, these variations and their reason for shall be submitted to the COR for their technical approval as soon as possible. No variation shall be performed without the preventive written approval by the

Contracting Officer.

Unless otherwise indicated in writing by the COR, the materials to be furnished under these specifications shall be unused, first grade commercial quality standard products of a reputable manufacturer regularly engaged in the production of such equipment and shall be the manufacturer's latest standard design that complies with the specification requirements. Where two or more units of the same class of equipment are required, these units shall be the products of a single manufacturer; however, all component parts of the equipment need not be the products of a same manufacturer.

13a-1.5 Submission of materials for approval

With reference to paragraph 1a-04, the Contractor shall submit a complete list, in triplicate, of the materials, fixtures and equipment to be utilized in the work, to the COR’s approval. The list shall include the country of origin, name of manufacturer, catalog numbers, pictures, diagrams, drawings, and any other necessary description of technical data. In case the factory literature does not describe the material in sufficient detail to ensure conformance with the specifications, samples of the materials shall be submitted for approval. In the case of special made-to-order equipment, or shop fabricated items standard components, shop drawings showing fabrication details, material specifications, finishing, installation methods, etc. shall be submitted in triplicate. No consideration will be given to partial lists submitted from time to time. Any listed material, fixtures, and equipment that are not of first grade commercial quality or not in accordance with the specifications requirements shall be subject to rejection. Descriptive literature and shop drawings covering approved material and equipment will remain in the possession of the US Government and material or equipment samples will be retained until the required quantities of approved material or equipment have been delivered to the building site or until determined by the COR.

13a-1.6 Equipment installation

The contractor shall perform all operations of uncrating, assembly, setting in place, levelling, anchoring, testing and adjusting for perfect operation of all machinery and equipment items, except for items to be installed by the US Government agencies. The locations shown on the drawings may be subject to minor deviations to avoid interference with utility lines or architectural features of the building. Measurements for mounting bolts, platforms or recesses will not be taken from the drawings but will be confirmed from approved equipment manufacturer's shop drawings or directly from the machinery or equipment. The electric circuits and services for other utilities will be installed as indicated on the drawings. The exact location of machinery connection boxes, conduit pipe or tubing risers will be confirmed on the field, prior to installation to provide the most convenient accessibility to the connection on the machines. If the manufacturer does not provide machines with connection boxes, the Contractor shall supply and install the proper boxes to ensure satisfactory enclosed connections.

13a.2 REMOVAL

Included in the electrical removal are all circuits with relative surface mounted or recessed raceways, and all equipment connected to them, such as electrical panels, light fixtures, switches, receptacles, junction boxes, etc., complete with ancillary fastenings, and any other material not necessary in the new system. Partial removal of the electrical system shall be carried out so that electrical circuits in the rooms adjacent to the areas where work is performed remain operational.

All existing masonry work or utility lines damaged during the removal shall be adequately restored to match the original conditions.

13a.3 GROUNDING SYSTEM

13a-3.1 General

The grounding system shall be installed in compliance with norms CEI EN 50522, CEI 64-8 and with handbook CEI 64-12. When the grounding system is used as a lightning protection system, also standard CEI EN 62305 and NFPA 780 shall be complied with.

13a-3.2 Cases in which grounding is forbidden

Grounding is forbidden in the following cases (unless otherwise indicated):

- Class II equipment (provided with double insulation);

- Equipment fed by isolation transformers (protected for electrical isolation); in case the isolating circuit feeds more than one user, masses shall be interconnected through a unipotential conductor insulated from grounding.

- Equipment fed by safety transformer (SELV protection).

13a-3.3 Ground systems components

The ground system shall consist of the following parts:

- Ground rods;

- Main ground bus for connection of the grounding and protecting conductors;

- Ground conductors for the interconnection of the following elements:

o ground rods among themselves o ground rods to the main ground bus o foundation reinforcements to the main ground bus ;

- Protective conductors for connection of all equipment steel castings to main ground bus

(PE);

- Conductors for main equipotential connections (EQP) connections, connecting to the main ground bus.

o Pipes entering the building, mainly for water and fuel oil supply o Pipes for the main heating and air conditioning systems;

o Any metal structure of the building

- Conductors for supplemental equipotential connections, required for the following spaces:

o Bathrooms and shower rooms o Swimming pools o Medical or beauty rooms.

The supplemental equipotential connections connect all extraneous masses present in the room to the supplemental equipotential node, namely the pipes entering the room and the metal parts, such as doors and windows providing a resistance to grounding below the following values:

o 1000 ohm in bathrooms, shower rooms and swimming pools o 200 ohm in medical rooms of group 1.

The contractor shall perform the measuring of the resistance to ground of the external masses.

13a-3.4 Connections

Connections between grounds system parts shall be sufficiently sturdy to withstand possible mechanical stresses and at the same time, not to damage the system parts. Unless otherwise indicated on the drawings, connections shall be as follows:

- Connections among ground conductors and between ground rods and ground conductors shall be performed through exothermic welding type CADWELD when directly buried.

- Connections between ground rods and ground conductors shall be performed using clamps and bolts when inside grounding pits. Clamps shall be of copper and adequate for round ground rods. Ground conductors shall be connected to clamps through copper ring lugs;

connecting bolts (screws+nuts+washers) shall be of stainless steel AISI 316.

- Connections between accessible ground conductors shall be obtained through an exothermic welding type CADWELD or through “C” shaped sturdy clamps of the compression type, of electrolytic copper (to provide a contact equivalent to the one of the welding); in this case connections shall be protected by a special compound to prevent oxidation when performed outdoor.

- Connections of ground conductors to foundation reinforcements shall be performed through exothermic welding type CADWELD.

- Connections between ground conductors and main ground bus or between protecting conductors and main ground bus shall be performed using ring lugs of nickel coated brass, of the clamp type, connected to the bus by screws, bolts and washers of nickel coated brass.

- Connections between conductors and metal masses shall be performed using the most adequate accessories depending on the metal mass to be connected and to prevent corrosion: for metal pipe grounding, collars or straps complete with clamp for fixing the equipotential conductor shall be used.

- Connections between equipotential conductors and main of secondary ground bus shall be performed using eye strap collars of nickel coated brass of the clamp type, connected to the bus through screws, nuts, washers of nickel coated brass.

Connections of main equipotential conductors to pipes entering the building shall be performed at the entrance of pipes into the building.

Connections of secondary equipotential conductors to pipes entering the building shall be performed at the entrance of pipes into the room.

The contractor is required to visually verify equipotential connections at the presence of the COR before closing chases.

13a-3.5 Ground rods

Ground rods shall be of the sectional type with circular solid cross section, made of steel with a

0.5 mm thick copper plate covering, 20 mm external diameter, 3 meter minimum length. The ground rod shall be complete with joint sleeves, extension sections, miscellaneous type wire terminals (depending upon the project installation requirements), drive head, and bottom cone.

The method of driving indicated by the manufacturer shall be complied with to avoid any damage to the rod. The various rod sections shall be driven as perpendicular to the ground as possible.

The ground rod top shall be driven below the ground level to avoid corrosive effects whenever possible. In any case the part of rod in direct contact with the ground shall not be less than 2.8 m.

Ground rods shall be housed inside accessible ground pits, unless otherwise indicated on the drawings or in the description of the work.

13a-3.6 Inspectable Ground Pits

Ground pits shall be sectional type, pre-cast concrete. The bottom of the ground pits shall be provided with a hole for ground rod and conductor penetrations. The internal minimum dimensions shall be: 50 (length)x 50 cm (width)x 50 cm (height), 5 cm thick. Installed ground pits shall be equipped with frame and cover of class D400 cast iron, that shall result flush with the adjacent surfaces. The ground surrounding the station shall be compacted and a concrete pouring shall be performed around it to increase stability. A dedicated sign shall be permanently fixed with expansion anchors and screws of stainless steel AISI 316 on the closest wall. The distances from the sign to the pit shall be reported on the sign by engraving.

13a-3.7 Main ground bus shall consist of a flat bar of bare copper complete with installation spacers. Unless otherwise indicated on the drawing or in the scope of work, the main panel ground bar will work as main grounding bus. All conductors connected to the main bus shall be identified with labels fixed permanently and indicating the components connected.

13a-3.8 Secondary grounding bus shall consist of a bare copper bar, holed and complete with fixing spacers, in an inspectable box.

Secondary grounding conductors shall be connected to the main bus through a protecting conductor of the flexible and insulated type having 6 sq mm minimum cross section. All conductors connected to the secondary bus shall be identified with tags fixed permanently, indicating the components connected.

13a-3.9 Ground conductors.

Ground conductors shall be of bare copper strand, 35 sq mm minimum cross sectional areas and minimum diameter of each single wire 1.8 mm, installed at minimum 75 cm depth below ground level. Service entrance sections to the building shall be protected by conduit and shall be removable.

13a-3.10 Protective conductor (PE) shall be of copper, flexible, insulated, yellow-green, minimum cross sectional areas as indicated below:

CROSS SECTIONAL AREA OF PHASE

CONDUCTOR

CROSS SECTIONAL AREA OF PROTECTIVE

CONDUCTOR

Up to 16 sq mm same as phase conductor

Between 16 and 35 sq mm 16 sq mm

Over 35 sq mm One half of the phase conductor

NOTE: When the protective conductor is not included in the conduit of the phase conductor, the protective conductor shall be no less than:

2.5 sq mm, when a mechanical protection is required;

4 sq mm, when a mechanical protection is not required.

13a-3.11 Conductors for equipotential bonding shall be of insulated flexible copper strand, yellow-green color. The minimum cross sectional areas of these conductors shall be as indicated below:

EQUIPOTENTIAL

CONDUCTORS

MAIN PROTECTING CONDUCTOR CROSS

SECTIONAL AREA PE

CONDUCTOR

EQUIPOTENTIAL

CROSS SECTION

Main EQP

≤ 10 sq mm 6 sq mm

= 16 sq mm 10 sq mm

= 25 sq mm 16 sq mm

≥ 35 sq mm 25 sq mm

Additional EQS:

mass-mass connection

EQS ≥ PE with the smallest cross sectional area;

When two masses belong to circuits having the cross sectional areas of protecting conductors very different, fault currents could occur such as to strain thermically and excessively the EQS conductor (of dimensions suitable to the cross sectional area of the minor protection conductor). In this case it is advisable to increase the cross section of the EQS conductor based on the actual fault current.

Additional EQS:

mass-foreign mass connection

EQS = 1/2 of the section of the corresponding conductor PE

Note In any case the cross section of the EQS conductor shall be as follows:

≥ 2.5 sq mm if mechanically protected

≥ 4 sq mm if not mechanically protected

In medical rooms a minimum 6 sq mm cross section is always required.

Mass Conductive part of the electrical system. Under normal insulating condition, this part is not energized; however, in case of failure of main insulation, it may become energized and may be touched (e.g. water heater, domestic appliances, etc.)

Foreign mass Conductive part, unrelated to the electrical system, with a good electrical connetion to the ground, adequate to feed the ground potential (buried water pipe, reinforcement of concrete, metal bearing structures of buildings, etc.)

or other potential.

13a.4 RACEWAYS FOR INDOOR INSTALLATION AND ELECTRICAL CABLES

13a-4.1 General requirements

Maximum cross sectional area utilized in raceways and installation of cables.

In raceways the area taken by the power cables shall not exceed 50% of the usable section.

The interior diameter of pipes shall be at least equal to 1.3 times the diameter of the circle circumscribed of the beam of cables contained therein.

Electrical circuits shall be laid in conduits only when the raceway system is completely installed, so that the electrical system may be pulled out without damage to conduits or wiring.

Raceway course

Raceways shall be installed parallel to walls, to structural elements and to the intersection lines between vertical surfaces and ceilings. Parallel paths shall be spaced symmetrically and the same distance shall be kept at bends, also increasing the radius of each concentric bend. Minor deviations will be allowed in the raceway course shown on the drawing only if strictly necessary.

In any case the access to the raceways and junction boxes shall be ensured. All deviations shall be previously notified and approved by the COR

Installation of raceways

Contractor shall furnish all necessary hangers, brackets and other incidental items to install raceways in a permanent and suitable manner on the type of surface, consistent with the architectural finish of the location. As a rule, when a conduit is parallel to or crosses mechanical system pipings, it shall be installed above the mechanical piping at an adequate safe distance. All necessary precautions shall be taken to avoid lodgment of cement mortar, plaster, dirt or other foreign matters in conduits during the construction. Conduits that have become clogged shall be freed of accumulation or replaced.

Masonry crossings

When penetrations are made through walls or ceilings, holes shall be neatly made. After conduit installation, holes shall be adequately restored to match adjacent surfaces. Any roof crossed by conduit shall receive a new adequate waterproofing membrane. PVC or galvanized iron conduits passing through foundations or concrete members shall be laid inside a sleeve installed to provide access for future installation of conduit. The internal diameter of sleeve shall not be greater than

1-1/2 times the external diameter of conduit to be installed. Whenever raceways cross walls or deck ceilings being part of a fire rated insulating system, adequate fire-break barriers shall be provided to restore the original resistance to fire.

13a-4.2 Metal cable trays

Metal cable trays shall have the following characteristics:

- Material: hot-galvanized steel type sendzimir

- Painting with epoxy-polyester powders

- Rectangular or square shape

- Closed and smooth base with smooth cover IP40, unless otherwise indicated on the drawings or in the description of the work, if installed indoor.

- Closed and smooth base with smooth cover, complete with accessories to provide a protection degree equal to IP44 if installed outdoor.

All accessories for raceway mounting and support shall be made of galvanized steel. Changes in direction (horizontal and vertical), crossings, and joining with different size or type shall be made with all fittings furnished by the raceway manufacturer. Handmade fittings will not be accepted.

Raceways shall be laid on brackets, which shall be fixed on the wall or hung from the ceiling through adequate plates and profiles. Brackets, hungers and plates used for the raceway fixing shall be of the type provided by the raceway’s manufacturer. Spacing between two consecutive supports shall not be above 2 meters. The parts making the raceway system shall be interconnected to provide a perfect electrical continuity: to comply with this requirement the contractor shall use the accessories provided by the raceway’s manufacturer.

In case the same raceway is used for the installation of power and signal cables, it shall be complete with one or more metal dividing plates of the same brand of the raceway to dedicate a compartment to each of the following types of cables:

- Power cables

- Telecommunication network cables (LAN)

- Other types of signal cables (TVCC, TV antenna, anti-intrusion system, etc.).

In any case a 5 cm minimum distance shall be kept between power and telecommunication (or other type of signal) cables.

13a-4.3 Wire cable trays shall have the following characteristics:

- Material: hot-galvanized steel

- Rectangular shape, 50 mm minimum height

- 20J resistance to shocks

- Complete with smooth cover unless otherwise indicated on the drawings or in the description of the work.

Wire cable trays will be allowed to be installed only above false ceilings, never exposed.

All accessories for the installation and support of the raceway shall be of galvanized steel. All changes in direction, both horizontally and vertically, all intersections and all couplings between raceways having different measures and of different types shall be made using fitting elements provided by the bridge’s manufacturer. Handmade fitting elements will not be allowed.

Wire cable trays shall rest on shelves, which will be allowed to be fixed on the wall or hung from the ceiling through adequate plates and profiles. Shelves, brackets and plates to be used for the installation of the raceway shall be of the type provided by the raceway’s manufacturer. Spacing between two subsequent supports shall not be over 2m. The raceway components shall be connected to each other to provide a perfect electrical conductivity: to comply with this requirement for equipotential connection, only accessories provided by the raceway’s manufacturer shall be used.

In case the same Wire cable tray is used for the installation of power and signal cables, it shall be complete with one or more metal separators of the same brand of the raceway, so as to dedicate a compartment to each cable type:

- Power cables

- Telecommunication net cables (LAN)

- Other type signal cables (TVCC, TV antenna, intrusion detection system, etc.)

However a 5 cm minimum distance shall be kept between power and telecommunication (or other type signal) cables.

13a-4.4 Galvanized steel pipes

Galvanized steel pipes shall have the following characteristics:

- Material: hot-galvanized steel type sendzimir

- Circular cross sectional area

- Minimum exterior diameter 20 mm

- Minimum thickness 1 mm.

Pipelines shall be surface mounted by galvanized steel hangers with lateral hook type opening and threaded hole or with metal brackets. Pipe hangers shall be spaced approximately 1 m o.c.

Use of multiple pipe hangers is allowed. Contractor shall furnish all connectors, elbows, joint sleeves, closing sleeves, covers, reductions and any other incidental items necessary for an IP67 protection degree. When cable conduits are to be connected to other equipment provided with threadless entries, electrical continuity between the two metal bodies will be insured by use of bushings and nuts suitable for the purpose. Use of Teflon or hemp in metal pipe connections is strictly prohibited.

13a-4.5 Flexible fittings for steel pipes

Flexible fittings for steel pipes shall have the following characteristics:

- Material: Steel sheath covered by vacuum PVC

- Circular cross sectional area

- Minimum exterior diameter 20 mm

- Complete with nickel coated brass fittings at the ends

- IP65 protection degree.

Flexible fittings shall be used where a wiring with steel pipes is required to make bends (where the use of rigid bends is not possible) or to make misalignments between pipes, misalignments close to a junction box or to get over obstacles.

13a-4.6 Metal/plastic cable guides

Cable guides shall have the following characteristics:

- Material: of hot-galvanized flexible steel, PVC coated

- Circular cross sectional area

- Minimum exterior diameter 20 mm

- Classification CEI EN 50086:

o Resistance to crushing: class 3 (above 750 N) o Cold impact: class 3 (2 kg from 10 cm) o Resistance to minimum temperature: class 3 (-15°C) o Resistance to maximum temperature: class 1 (+60°C)

- Not fire diffusing as per CEI EN 50086

- Very good resistance to UV rays

- IP65 protection degree through adequate compatible fittings.

Cable guides shall be used with a wiring system of steel pipes for the protection of terminal circuits for the connection to electrical equipment subject to vibrations (i.e. motors, burners, etc.).

13a-4.7 Rigid insulating pipes of insulating material

Rigid insulating pipes shall have the following characteristics:

- Color: grey RAL 7035

- Circular cross sectional area

- Minimum exterior diameter 20 mm

- Classification CEI EN 50086-1 and CEI EN 50086-2-1:

o Resistance to crushing: class 3 (above 750 N) if the pipe is installed above the false ceiling, under a floating floor or recessed in a wall, class 4 (above 1250N) if the pipe is installed exposed o Cold impact: class 3 (2 kg from 10 cm) o Resistance to minimum temperature: class 2 (-5°C) o Resistance to maximum temperature: class 1 (+60°C)

Pipelines shall be surface mounted by galvanized steel hangers of plastic with threaded hole for fixing. Pipe hangers shall be spaced approximately 80 cm o.c. Use of multiple pipe hangers is allowed. Contractor shall furnish all connectors, elbows, joint sleeves, closing sleeves, covers, reductions and any other incidental items necessary for an IP55 protection degree, unless otherwise indicated on the drawings or in the description of the work.

In rooms classified at a higher fire hazard (M.A.R.C.I.) for high crowd density or long evacuation time, pipes shall be halogen free type in compliance with norm EN 50267-2-2.

13a-4.8 Flexible pipes of insulating material.

Flexible insulating pipes shall have the following characteristics:

- Color: grey RAL 7035

- Circular cross sectional area

- Minimum exterior diameter 20 mm

- Classification CEI EN 50086-1, CEI EN 50086-2-1 and CEI EN 50086-2-3:

o Resistance to crushing: class 2 (above 230 ton) o Cold impact: class 3 (2 kg from 10 cm) o Resistance to minimum temperature: class 1 (+5°C) o Resistance to maximum temperature: class 1 (+60°C)

These pipes shall be used for the installation recessed in masonry under plaster or in gypsum-board partitions.

Plaster recessed conduits shall be provided with a minimum 20 mm thick plaster cover. In no case tubing splices or crossing will be permitted. Plaster and paint used for chases shall match adjacent surfaces. Cutting of reinforcing bars during construction of chases will not be permitted.

Avoid horizontal trenches to the minimum possible.

13a-4.9 Raceways of insulating material.

Raceways of insulating material shall have the following characteristics:

- In compliance with norms CEI EN 50085-1 and CEI EN 50085-2-1

- White color

- IMQ brand

- Complete with trip cover having rounded profile

- 3 interior compartments minimum

- To be used as baseboard or frame

- IP40 protection degree.

Raceways shall be complete with all accessory kit recommended by the manufacturer. Exposed raceways shall be fixed with metal expansion shields and washers, spaced 1 m o.c. If not specifically stated, the dimensions of the raceways shall be adequate to house the power and communication cables required by the drawings or by the description of the work.

As to each change of direction, both horizontally and vertically, to crossings and couplings between ducts of different dimensions and types, all fitting elements provided by the manufacturer shall be used; in particular junction boxes shall be complete with one or more separators to allow the junction of cables housed on separated parallel levels. Handicraft fittings will not be accepted.

13a-4.10 Junction boxes of insulating material, exposed installation

These insulating junction boxes shall be used with the wiring system inside exposed pipes of insulating material and shall have the following characteristics:

- In compliance with norm CEI 23-48, EN 60670

- Rectangular or square shape

- Color grey RAL 7035

- IP55 protection degree

- Minimum resistance to shock: IK 07 if installed above the false ceiling or under floating floors, IK08 if installed exposed

- Complete with screw type cover

- Smooth sides with cable glands or fittings or with built-in waterproof inlets.

In rooms classified at a higher fire hazard (M.A.R.C.I.) for high crowd density or for long evacuation time, junction boxes shall be halogen free type in compliance with norm EN 50267-2-

2.

13a-4.11 Junction boxes of insulating material, recessed installation

These insulating junction boxes shall be used with the wiring system inside recessed pipes of insulating material and shall have the following characteristics:

- Rectangular or square shape

- Complete with screw type cover

- Inlets for 20 or 25 mm diameter pipes on all sides and on the bottom.

13a-4.12 Junction boxes of metallic material

Metallic insulating junction boxes shall be used with the wiring system inside steel and shall have the following characteristics:

- In compliance with norm CEI 23-48, EN 60670

- Rectangular or square shape

- Body and cover of aluminum alloy

- IP66 protection degree

- Minimum resistance to shock: IK 08

- Steel screws

- With smooth sides with cable glands or metal fittings.

13a-4.13 Low voltage electrical cables

Unless otherwise indicated on the drawing or in the description of the work, in rooms not classified at higher hazard in case of fire (not MARCI), electrical cables shall be of the following types:

- FG16OR16 for distribution or terminal circuits

- FS17 for terminal circuits

In rooms classified at higher fire hazard for high density of population or long evacuation time

(MARCI) electrical cables shall be of the following types:

- FG16OM16 for distribution and terminal circuits

- FG18OM16 for distribution and terminal circuits

- FG17 for terminal circuits.

Conductors shall have the color of the insulation in compliance with CEI norms. In any case the protecting conductor PE shall be yellow-green.

Branching off shall be performed only inside junction boxes through adequate insulating clamps.

Conductors of circuits working with voltage higher or equal to 50V shall be installed inside raceways so as to be separated from the ones working at a voltage lower than 50V a.c.

13a.5 ELECTRICAL EQUIPMENT FOR SYSTEMS IN NON INDUSTRIAL TYPE

FACILITIES (INCLUDING ELECTRICAL AND COMMUNICATION ROOMS)

13a-5.1 General.

The electrical equipment shall be white and of the modular type, shall meet the requirements of standards CEI 23-68, 23-75, 23-50 and may be enclosed in the same container up to a maximum of three units (circuit breakers or outlets), in various sets as indicated on the drawing. The exact location of the equipment shall be agreed upon with the COR. Provide each outlet with a permanent label indicating the voltage. All components (outlets, circuit breakers, pushbuttons, supports, plates, etc.) shall be of one brand and of one model. Reference components are MATIX by BTICINO or PLANA by VIMAR or another brand and/or approved model of upper quality.

Particular requirements for bathrooms and kitchens

In these rooms wiring shall be wall recessed. In bathrooms, close to each lavatory, a service outlet shall be installed. On the kitchen top at least two universal type outlets shall be provided.

In both cases modular ground fault circuit breakers having very high sensitivity (<10mA) shall be provided to protect outlets locally.

Particular requirements for rooms containing electrical and communication panels.

Unless otherwise indicated on the drawings or in the description of the work, wiring in these rooms shall be made inside exposed pipes of insulating materials.

13a-5.2 Types of installation

Recessed installation

It shall consist of a plastic box having minimum indicative dimensions 108x74x53.5 mm, holding equipment support, white plate having rounded shape and rounded off perimeter. In case a minimum protection degree IP65 is required, a cover adequate for recessed installation of the equipment in the box shall be installed to ensure the required protection degree, as series

IDROBOX by firm BTICINO or approved equal.

Masonry recessed type shall be complete with plastic box, 104 x 64 mm minimum size, resin support and ivory color resin plate, or approved equal. When a minimum IP 44 protection value is required, the box shall be complete with support, resin protected type, and with transparent elastic coat or spring type cover, as series MAGIC, by Ticino, or approved equal.

Installation in exposed box (wiring in a pipe of insulating material)

This box shall consist of an equipment holding box of insulating material IP40, suitable to house the indicated elements (circuit breakers and outlets). It shall be complete with fittings or built-in inlets for the connection of insulating material to the pipes.

Installation in exposed box (wiring in a raceway of insulating material)

This box shall consist of a box of the same brand and model of the raceway, shall be complete with the base for the connection to the raceway, equipment holding support and a white plate.

The shape shall be rounded, with rounded off perimeter.

13a-5.3 Switches

Switches shall be 1 pole 16A or 2-pole, 16A, 250V a.c. , rocker type, white color. If the electrical distribution of the building is 230V three-phase, use only 2-pole switches. Switches to control outlets or steady load (such as water heaters) shall be only bipolar.

13a-5.4 Pushbuttons

Pushbuttons shall be of the normally open design, 10A, 250V a.c., of the type for momentary connection for the control of cyclic relays, white color.

13a-5.5 Infra-red switches

Switch with infra-red motion sensor with twilight device having variable threshold and cutting out possibility; timing circuit for adjustable delay in turning off, relay outlet for resistive and inductive loads, 230V a.c. feeding.

13a-5.6 127V USA standard outlets

USA outlets shall be 2P+G, 16A, 127/250V a.c., irreversible, USA standard, white color, shielded sockets (as art. AM5115T by BTICINO or approved equal).

13a-5.7 230V Italian dual standard outlets (outlets P11/P17)

Italian outlets shall be of the type 2P+G, 16A, 250V a.c., 19 mm and 26 mm distance between holes, shielded sockets, white color, for plugs 2P and 2P+G, 10A and 16A, ITALIA standard.

13a-5.8 230V universal outlets (outlets P40)

Universal outlets shall be of the type 2P+G, 16A 250V a.c., 19 mm and 26 mm distance between holes, shielded sockets, white color, with lateral contacts and central ground contact, suitable for plugs Italia standard 2P and 2P+G 10 and 16A and for standard German plugs 2P+G 16A.

13a-5.9 Automatic ground fault circuit breaker.

Ground fault circuit breaker shall be 2P, 16A, breaking capacity 3000V at 230V with alternate current, 10mA differential current, white color.

13a-5.10 Tie rod push button

Tie rod pushbutton shall be normally open, 10A, 250V a.c., of the momentary contact type, white color, with tie rod, complete with string.

13a-5.11 Buzzer

It shall be of the type 230V a.c., white color, 80dB.

13a-5.12 Visual warning device for installation out of the door

This device shall be 230V a.c., red color and complete with LED lamp. It shall be used at the same time of the buzzer to signal an emergency out of the door of the handicapped toilets.

13a-5.13 Heights of installation

Unless otherwise indicated on the drawings or in the description of the work, the heights of installation from the floor shall be as follows:

- Tie rod push button: >225 cm

- Flexible cord guide for water heater: 180 cm

- Outlet and light switch (mirrors, services): 110-120 cm

- Light switches at door handle height: 90 cm

- Buzzer and visual alarm out of door: 160-205 cm

- Outlets at baseboard: >7cm

- Outlets (of power, TV and any junction boxes): >17 cm

13a.6 ELECTRIC EQUIPMENT FOR SYSTEMS IN INDUSTRIAL TYPE FACILITIES

OR SIMILAR (WAREHOUSES, SHOPS, MECHANICAL/BOILER ROOMS, ETC.)

13a-6.1 General

Unless otherwise indicated on the drawings or in the description of the work, the wiring in rooms stated at the present paragraph shall be inside an exposed steel pipe having IP65 minimum protection degree.

13a-6.2 Boxes for switches, push buttons and power outlets, civil series

They shall have the following characteristics:

- In compliance with the requirements of norms CEI EN 60669-1, CEI 23-5.

- Housing of technopolymer insulating material

- For installation on the wall

- IP55 protection degree

- Double insulation

- Crush resistance IK08 or higher

- Complete with switches, outlets or other equipment civil series as indicated on the drawings or in the description of the work.

- Current capacity, voltage and number of poles as indicated on the drawings or in the description of the work.

13a-6.3 Rotary switches

Rotary switches shall have the following characteristics:

- In compliance with the requirements of norms CEI EN 60947-3

- Housing of high performance thermoplastic insulating material

- For installation on the wall

- IP66 protection degree

- Crush resistance IK10 or higher

- Tripolar, 20A, 415V, Type AC23A.

They shall be used for the control and the local disconnection of electrical motors (including pumps, exhaust fans or air conditioning units).

13a-6.4 Industrial outlets, type CEE

These outlets shall have the following characteristics:

- In compliance with the requirements of norms CEI EN 60309-1, CEI EN 60309-2, CEI

EN 60309-4.

- Housing of thermosetting insulating material

- Complete with mechanical interlock

- For installation on the wall

- IP66 protection degree

- Crush resistance IK10 or higher

- Current capacity, voltage and number of poles as indicated on the drawings or in the description of the work.

13a.7 LIGHTING SYSTEM

13a-7.1 General

All lighting fixtures shall be complete with all accessories for their operation, including all parts for a workmanlike installation as indicated by the manufacturer. Unless otherwise indicated on the drawings or in the description of the work the emergency lighting fixtures shall be separated from the normal lighting ones: whenever normal lighting fixtures are also required to work as emergency lighting fixtures, these shall have an emergency built-in device certified by the manufacturer, with a battery having 1.5 hr minimum autonomy of operation.

Particular requirements

Lighting fixtures shall be installed above the lavatory mirrors and outdoor above the access doors as described in the pertaining paragraphs.

13a-7.2 Lighting levels

Unless otherwise indicated on the drawings or in the description of the work, the medium lighting levels established by norms UNI EN 12464, UNI 11248, UNI EN 13201 and by the US norms

UFC-3-530-01 shall be provided. In case of contrast between the requirements of the norms, the higher lighting level shall be taken as reference. In any case, at least the following values shall be provided in the rooms indicated below:

- Offices, classrooms and conference rooms: 500 lux at 0.80 m above the floor

- Corridors: 100 lux above the floor

- Stairwells: 150 lux above the floor

- Storage room: 100 lux above the floor

- Bathrooms: 300 lux at 0.90 m above the floor

- Mechanical rooms: 300 lux at 1.00 m above the floor as well as on the main mechanical and measuring components of equipment

- Communication rack room: 500 lux at 0.90 m above the floor

- Electrical panel room: 300 lux at 0.80 m above the floor

- Building access (exterior of the building): 50 lux above the floor.

13a-7.3 LED panels for offices and similar rooms (conference rooms, classrooms, etc.)

The LED panels for these rooms shall have the following minimum characteristics (reference product 840 LED Panel by Disano or approved equal):

- Press-forged body of white polycarbonate, dimensions 595x595 mm

- Inner slab in PMMA

- Diffusor of prismatized techo-polymer of the high transmittance type

- Quick connection without opening the device

- Recessed installation in the false ceiling

- Unified Glare Rating (UGR) <19 in all situations

- Absorbed electric power 31W

- Power factor ≥ 0.95

- Color temperature 4000K

- Light flux 3327 lumen

- Color Rendering Index (CRI) ≥ 90

- Light flux life: 50000 h at 80% (L80B20)

13a-7.4 LED lighting fixtures for bathrooms

LED fixtures for bathrooms shall have the following minimum characteristics (reference product shielded Comfort Lex LED by Fosnova or approved equal):

- Die-cast aluminum body

- Diffusor with panel of PMMA with shielded ring against glaring

- For installation recessed in false ceilings

- Absorbed electric power 20W

- Color temperature 4000K

- Light flux 2290 lumen

- Color Rendering Index (CRI) >90

- Light flux life: 50000 h at 70% (L70B50)

The fixtures to be installed above mirrors shall be LED and shall have the following minimum characteristics (reference product 420 Rigo by Disano or approved equal):

- Aluminum body

- Diffusor of opal techo-polymer

- For wall installation

- Absorbed electric power 7W

- Color temperature 4000K

- Light flux 1080 lumen

- Protection degree IP43.

13a-7.5 LED lighting fixtures for corridor

LED fixtures for corridors shall have the following minimum characteristics (reference product shielded Comfort Lex LED by Fosnova or approved equal):

- Die-cast aluminum body

- Diffusor with panel of PMMA with shielded ring against glaring

- For installation recessed in false ceilings

- Absorbed electric power 20W

- Color temperature 4000K

- Light flux 2290 lumen

- Light flux life: 50000 h at 70% (L70B50)

13a-7.6 LED lighting fixtures for technical rooms

They shall have the following minimum characteristics (reference product 962 Hydro LED by

Disano or approved equal):

- Body of grey polycarbonate, unbreakable and self-extinguishing

- Diffusor of polycarbonate, striped on the interior side and smooth on the exterior

- Galvanized steel reflector

- Stainless steel brackets

- Protection degree IP66

- Resistance to shocks IK08

- Absorbed electric power 36W

- Color temperature 4000K

- Light flux 5560 lumen

These fixtures shall be used in technical rooms such as mechanical rooms, rooms for electrical panels and for communication racks.

13a-7.7 LED lighting fixtures for workshops

They shall have the following minimum characteristics (reference product 995 Forma by Disano or approved equal):

- Body of press-forged steel

- Diffusor of tempered glass resistant to shocks

- Stainless steel brackets

- Protection degree IP65

- Resistance to shocks IK08

- Absorbed electric power 36W

- Color temperature 4000K

- Light flux 5560 lumen

- Light flux life: 50000 h at 80% (L80B20)

These fixtures will be used in mechanical and electrical shops, as well as in carpenters’ workshops and similar workshops.

13a-7.8 LED lighting fixtures for warehouses

They shall be installed at about 8 m height, below the structural tention rods. They shall have the following minimum characteristics (reference product 1789 Astro by Disano or approved equal):

- Aluminum body

- Diffusor of tempered glass resistant to shocks

- Power painted resistant to corrosion

- Complete with built-in temperature control device with automatic reset

- Protection degree IP65

- Resistance to shocks IK08

- Dimming 1-10V

- Absorbed electric power 187W

- Color temperature 4000K

- Light flux 25920 lumen

13a-7.9 Outdoor LED lighting fixtures for above door installation

They shall have the following characteristics (reference product 1779 Musa LED by Disano or approved equal):

- Die-cast aluminum housing

- Diffuser: resistant to thermal shock and impact 4 mm thick tempered glass

- Protection degree IP65

- Resistance to shocks IK08

- Absorbed electric power 23W

- Color temperature 4000K

- Light flux 3840 lumen

- Luminous flux maintenance 70% 60000h (L70B20)

- Color Rendering Index (CRI) >70

- Complete with accessories for wall installation

13a-7.10 LED emergency lighting fixtures

They shall have the following minimum characteristics (reference model Logica LED by Beghelli or approved equal):

- In compliance with norms IEC 60598-2-22

- LED lighting flux: 750 lumen

- Possibility of flag-type installation, on the wall, on the ceiling and suspended

- Protection degree IP65, IK07

- Self diagnosis version

- Double insulation

- Self extinguishing Polycarbonate body

- Operation only upon emergency SE

- Battery with operation autonomy 2 hrs.

13a-7.11 LED lighting fixtures for the exit signaling

Minimum technical characteristics (reference model Logica LED by Beghelli or approved equal):

- In compliance with norms IEC 60598-2-22

- LED lighting source: 400 lumen

- Possibility of flag-type installation, on the wall, on the ceiling and suspended

- Protection degree IP65, IK07

- Self diagnosis version

- Double insulation

- Self extinguishing Polycarbonate body

- Continuos Operation SA

- Battery with operation autonomy 2 hrs.

- Complete with green signaling symbols

- Legibility distance: 20 m.

13a-7.12 Other lighting fixtures

They shall be of the type indicated on the drawings or in the description of the work.

13a-7.13 Cyclic relays

They shall be 2-pole, 16A contact rating at 250 V, 230V coil voltage (unless otherwise indicated).

The cyclic relays shall be wall surface mounted or installed inside plaster recessed junction boxes, which shall be provided with an identification mark approved by the COR.

13a-7.14 Photoelectric cell switches

- For installation on the wall

- Protection degree IP54

- Feeding 220V 50 Hz

- 10A contacts at 250V a.c. cosφ=1

- Adjustable intervention threshold 1-50 lux

13a-7.15 Astronomical switches

This type of switches shall have the following characteristics:

- Feeding 220V 50 Hz

- Contacts 10A at 250V a.c. cos φ=1

- Backlighted display

- Settable based on the place of installation or by inserting the geographical coordinates

- Forced turning on control through an exterior contact

- Automatic commutation solar time-daylight saving time

- Preservation of hour and program through lithium battery

- Life duration 12 years

13a-7.16 Motion detectors

- Suitable for installation on the ceiling, in the false ceiling or on the wall (using a support)

- Detection angle 0-360°

- Voltage 230V a.c.

- Minimum detection distance 7 m

- Minimum protection degree IP20

- 2 outlet contacts, one of which for the control of lighting based on the operation function

(type ON/OFF) and one for the control of the ventilation circuits, or other independently from the lighting level

- Adjustable lighting threshold

- Timing (delay after turning off) independently adjustable for the two outlet contacts.

13a-7.17 Seismic solicitations.

The lighting fixtures and their support and fixing devices shall stand the solicitation of a seismic event as per the Italian norms and the American standard TM-5-809-10, whichever is the more stringent one. Wires having 2.5 mm minimum diameter shall be used to support a load equal to at least four times the weigh of the supported fixtures. The lighting fixture supporting system will be considered acceptable if it allows 45° minimum swinging towards all directions with respect to the vertical line without any damage to the equipment and if it stands a strength not below four times the weigh. Electrical pipes with interior diameter above 2.5” shall be provided with supporting and fixing devices adequate to stand the seismic solicitations specified above.

13a.8 DISTRIBUTION PANELS, COMPONENTS, MEASURING SYSTEMS, EMERGENCY VOLTAGE RELEASE

13a-8.1 Street cabinets

They shall have the following characteristics (reference model Conchiglia or approved equal):

- Stamped, of SMC (glass fiber reinforced plastic)

- Minimum electrical protection degree IP55

- Crush resistance IK 10 as per CEI EN 62262

- Self-extinguishing type

- Door complete with cremone bolt closing, controlled by a retreating handle openable through security lock with one coding

- Hinged doors on three points, on the right

- Exterior metal parts galvanized and yellow passivated, interior electrically insulated

- Complete with bottom plate of galvanized steel sheet

- Complete with all accessories for the connection to the basement.

On the bottom plate a terminal board shall be installed through a DIN…