Division 26

Electrical / 265614

SECTION 265614 - SOLAR POWERED EXTERIOR LED LIGHTING

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including Conditions of Contract

and Division 01 Specification Sections, apply to this Section.

1.2 SUMMARY

A. This Section includes standalone solar powered exterior LED lighting system consisting
of fixtures using LED lamps and powered by PV system with the following components
as a minimum to ensure proper operation of the system:

1. Exterior lighting fixtures, LED lamps, drivers.

2. Lighting Controller
3. Poles/support structures, and accessories.
4. PV modules.
5. Charge controllers.
6. Batteries.
7. Related power distribution and control.
8. Protective earthing.
9. Photoelectric sensor.

B. Related Sections include the following:

1. Division 26 Section "Basic Electrical Materials and Methods".

2. Division 26 Section "Grounding and Bonding for Electrical Systems".
3. Division 26 Section "Low Voltage Electrical Power Conductors and Cables".
4. Division 26 Section "Exterior Lighting".
5. Division 26 Section "Photovoltaic Energy System".

1.3 DEFINITIONS

A. Luminaire (Lighting Fixture): A complete lighting device consisting of lamp(s) and

ballast(s), when applicable, together with parts designed to distribute light, to position
and protect lamps, and to connect lamps to power supply.

B. IP Code: Required ingress protection to comply with IEC 60529.

C. PV: Photovoltaic.

D. STC: Standard test conditions to IEC 61215.

1.4 SUBMITTALS

A. Equipment Data: For each type of standalone solar powered exterior LED lighting
system, submit complete data for approval including, but not limited to, the following:

1. Lighting Fixtures:
a. Detailed literature, in English, for each type of luminaire or fixture, lamp
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and control gear including manufacturer's name, catalogue number, rating,

material specification, overall dimensions, operating characteristics and
principles.
b. Physical Description of the Lighting Fixture including dimensions and
mounting arrangements. Include rated capacities, operating characteristics,
electrical characteristics, and furnished specialties and accessories.
c. Photometric data for lighting calculations including polar curves,
coefficients of utilization, efficiency and depreciation factors certified by
approved, internationally accredited, independent photometric testing
laboratory.
d. Materials, finishes, and dimensions of luminaires and poles.
e. Certified results of independent laboratory tests for fixtures and lamps for
electrical ratings and photometric data, including IP rating certification.
f. Life, output (lumens, Color temperature, and CRI) and energy efficiency
data for lamps. Lifetime for LED fixtures shall be indicated at an ambient
temperature of 25 and 50 deg. C.
g. Lumen Depreciation chart showing standard exponential decay curves for
various operating ambient temperatures derived through testing procedures
as specified by LM-80-08 test procedures. Test reports and procedures to be
submitted along with the chart.
h. Photo biological risk assessment for LED fixtures.
i. LED drivers.

2. Poles:
a. Detailed specification and drawings for each column type including shape,
base/mounting flanges, bolts, nuts etc, cross-sections, design criteria and
calculations, brackets, finishes, provisions for cabling, cut-out or circuit-
breaker etc. Include details of attaching luminaires and accessories along
with means to attaching luminaires to supports and their suitability for the
components.
b. Materials, finishes, and dimensions of luminaires and poles.
c. Poles anchor bolts.

3. Batteries
a. Batteries characteristics and cut sheets.

4. PV Panels:
a. Include construction details, material descriptions, dimensions of individual
components and profiles, and finishes for PV panels.
b. Include rated capacities, operating characteristics, electrical characteristics,
and furnished specialties and accessories.
c. PV test certificate including performance under STC conditions in
accordance with IEC 61215.

B. Point-wise compliance statement to the specifications, duly signed by the manufacturer,

supplier and the Contractor. Compliance statements signed by the supplier and the
Contractor only are not acceptable.

C. Exterior Lighting System Calculations: Lighting Unit shall be submitted based on a

complete system solution, supported by detailed calculations to substantiate the selection
made including but not limited to the following:

1. Computer generated photometric analysis for day 1 illumination with Luminaire

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Dirt Depreciation (LDD) and LLF factors as 1.

2. Computer generated photometric calculation for maintained illumination while
considering maintenance factor calculated in accordance with BS 5489.
3. Calculations of illumination and glare levels.
4. Battery sizing calculations in accordance with IEEE 485.
5. Detailed system energy yield performance simulation results indicating all types of
anticipated losses and taking into consideration the site characteristics.
6. PV modules, inverter, charger sizing calculation taking into consideration the
power loss due to high temperatures and soiling.

D. Shop and Construction Drawings: Submit drawings for approval including, but not
limited to, the following:

1. Layout of equipment in exact positions with mounting and construction details,

concrete foundation dimensions and reinforcement, backfill and packing material,
earthing rods etc.
2. Internal wiring diagrams, protection and control, earthing and the like.
3. For PV system, include details of equipment assemblies. Indicate dimensions,
weights, loads, required clearances, method of field assembly, components, and
location and size of each field connection.
4. Detail fabrication and assembly.
5. Batteries.

E. Qualification Data: For firms and persons specified in "Quality Assurance" Article.

F. Samples: submit fully equipped sample of lighting unit or other materials or components,
as required by the Engineer.

G. Product Certificates: Signed by manufacturers of lighting units certifying that products

comply with requirements.

H. Test Certificates: Submit certificates demonstrating LED fixtures compliance with the
referenced standards. Include the following as a minimum:

1. Degree of Protection to IEC 60529.

2. Humidity Proof to IEC 60598.
3. Insulation resistance and electric strength to IEC 60598.
4. Color rendering for LED fixtures to IES LM 79-08.
5. LED fixtures lifetime to IES LM-80-08 and IES TM-21-11.
6. Efficacy to IES LM-79-08.

I. Test and Evaluation Reports: Submit certified test reports showing compliance with
specified performance characteristics and physical properties.

J. Sample Warranty: For manufacturer's special materials and workmanship warranty and
minimum power output warranty.

K. Field Test Reports: Indicate and interpret test results for compliance with performance
requirements.

L. Manufacturer's Instructions: Submit manufacturer's storage and installation instructions.

Operation and Maintenance Data: Include in operation and maintenance manuals as
specified in Division 01 and to the satisfaction of Employer’s requirements.

M. As-Built (Record) Drawings: At Project close-out, submit Record Drawings of installed

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lighting, in accordance with requirements of the Specification, Division 01.

1.5 QUALITY ASSURANCE

A. Qualifications:

1. Manufacturer:

a. Having minimum of 5 years’ experience manufacturing components similar

to or exceeding requirements of project.
b. Having sufficient capacity to produce and deliver required materials without
causing delay in work.
c. Capable of providing field service representation during construction.
d. Manufacturing facility certified to ISO 9001 and to ISO 14001.

2. Installer:

a. Experienced installer who is an authorized representative system

manufacturer (s) for both installation and maintenance of units required for
this Project. Minimum 5 years of experience for similar installations.

B. Local Representative: Provide evidence that proposed equipment manufacturer has a

locally established and authorized organization which can be called upon for professional
advice and maintenance as may be required, and which can immediately supply spare
parts to support day to day and emergency maintenance requirements. Failure to satisfy
Engineer may disqualify a manufacturer.

1. Service Center: manufacturer (s) maintains a local service center capable of

providing training, parts, and emergency maintenance and repairs at the Project
site within 3 hours maximum response time, round-the-clock, 7 days.

C. Standards: Luminaires shall be of the highest international quality in material,

workmanship and finish and are to generally comply with approved American standard or
equivalent IEC 60598 and the applicable CISPR recommendations. Manufacturer is to
verify and certify compliance with these standards and the applicable local regulations
and design standards, as applicable.

D. Standards: Comply with the following Standards:

1. LED Fixtures:
a. IEC 60598 “Luminaires”.
b. IES LM-79-08 “Approved Method: Electrical and Photometric
Measurements of Solid-State Lighting Products”.
c. IES LM-80-08 “Approved Method: Measuring Lumen Maintenance of LED
Light Sources”.
d. IES TM-21-11 “Projecting Long Term Maintenance of LED Light Sources”.
e. EN 55015 “Limits and Methods of Measurement of Radio Disturbance
Characteristics of Electrical Lighting and Similar Equipment”.
f. IEC 62471 “Photo biological Safety of Lamps and Lamp Systems”.

2. LED Drivers:
a. IEC 61347-1 “Lamp Control gear - Part 1: General and Safety
Requirements”.
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b. IEC 61347-2-13 “Lamp Control gear - Part 2-13: Particular Requirements

for D.C. or A.C. Supplied Electronic Control gear for LED Modules”.
c. IEC 62384 “DC or AC Supplied Electronic Control Gear for LED Modules -
Performance Requirements”.
d. EN 55015 “Limits and Methods of Measurement of Radio Disturbance
Characteristics of Electrical Lighting and Similar Equipment”.
e. IEC 61547 “Equipment for General Lighting Purposes - EMC Immunity
Requirements”.

3. Photovoltaic Modules:
a. IEC 61215 - Crystalline silicon terrestrial photovoltaic (PV) modules —
Design qualification and type approval
b. IEC TS 62804-1: Photovoltaic (PV) modules-Test methods for the detection
of potential-induced degradation - Part 1: Crystalline silicon.
c. ANSI/UL 1703: Standard for Flat-Plate Photovoltaic Modules and Panels.
d. EN 50380 - Datasheet & nameplate information for PV modules.
e. IEC 61730 – Parts 1&2: PV module Safety Qualification.
f. UL 1704 - Standard for Inverters, Converters, Controllers and
Interconnection System Equipment for Use With Distributed Energy
Resources.
g. IEC 62446-1 – PV systems Testing & Commissioning.
h. IEC 61853-1 - PV module performance testing & energy rating.
i. IEC 61724 – PV System Performance Monitoring Guidelines for
measurement, data exchange and analysis.
j. IEC 60068-2-68: Environmental testing - Part 2-68: Tests - Test L: Dust and
sand.
k. IEC 61701: Salt mist corrosion testing of photovoltaic (PV) modules.
l. IEC 62716: Ammonia corrosion testing of photovoltaic (PV) modules.
m. IEC 61000 – Electromagnetic Compatibility (EMC).

4. Batteries:
a. IEC 60896 - Stationary Lead-Acid Batteries.
b. IEEE 485 - IEEE Recommended Practice for Sizing Lead-Acid Batteries for
Stationary Applications.

E. Ambient Conditions: Unless otherwise specified, equipment is to be designed and derated

for continuous and trouble-free service at 60 deg. C ambient temperature and 100%
relative humidity, with temperature reaching 70 deg. C in direct sunlight and with high
content of ultra-violet rays. Equipment is to withstand full load operation whilst exposed
to sun.

F. Equipment, apparatus, material accessories is to be corrosion and salinity proof. UV

stabilized requirement shall be applied for outdoor installations and their surface finish
and due certification be provided by manufacturer as necessary.

G. All lighting fixtures shall have test certification from approved, internationally
accredited, photometric laboratories.

H. All luminaries shall be sourced either directly from manufacturer or from manufacturer-
authorized dealer/agent within the Kingdom of Saudi Arabia, with documentation as
necessary.

I. Obtain specific written confirmation from luminaire, lamp, drivers and PV system
manufacturers on the inter-compatibility of the equipment/devices to each other and to
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the specific project conditions.

J. Mock-Up: Construct mock-up as follows:

1. Purpose: Construct showing related system components to judge quality of work,

and operation of equipment and material application.
2. Dimensions and Process: Construct the required dimensions as directed by the
Engineer, using proposed procedures, colors, textures, finishes and quality of
work.
3. Locate where directed by the Engineer.
4. Do not proceed with work prior to receipt of written acceptance of mock-up.
5. When accepted, mock-up will demonstrate minimum standard of quality required
for this work. Approved mock-up may, or may not, remain part of finished work,
as directed by the Engineer.

K. PV installation shall comply with NEC Article 690 Solar Photovoltaic Systems and/or
IEC 60364- 7-712.

1.6 DELIVERY, STORAGE, AND HANDLING OF POLES

A. Delivery and Acceptance Requirements:

1. Prior to shipping all products shall be inspected at the factory for damage.
2. Deliver material in accordance with the related sections of this specification, and in
accordance with manufacturer's written instructions.
3. Deliver materials in manufacturer's original packaging with identification labels
intact and in sizes to suit project.

B. Install certified “shock-guards’ on the equipment before shipping from the factory and
shall be retained in place till unpacked at site and inspected by Engineer, to ascertain
whether the “shock- guard” has been activated by any shock/impact during shipment.

C. Storage and Handling Requirements:

1. Store materials protected from exposure to harmful weather conditions and at

temperature conditions recommended by manufacturer.
2. Store poles on decay-resistant treated skids at least 300 mm above grade and
vegetation. Support poles to prevent distortion and arrange to provide free air
circulation.
3. Retain factory-applied wrappings until just before installation.
4. Handle poles with web fabric straps.
5. Luminaries are to be stored indoors in protective covering.
6. Batteries and electronic devices to be stored as per manufacturer’s recommendation.
7. Batteries shall not be stored for a period exceeding 3 months without powering up
the equipment for a period of 8 hours to recharge the batteries. Relevant Certificate
for the batteries production date shall be submitted to the Engineer.

1.7 WARRANTY

A. Manufacturer’s Warranty: Submit a written warranty signed by the manufacturer

agreeing to repair, restore or replace any defective equipment specified in this Section
during the specified warranty period except for LED fixtures and lamps where the
warranty shall clearly reflect that any defective LED fixture and / or lamp during the
specified warranty period will be replaced.
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1. Warranty Period Except for LED Fixtures and PV Panels: 2 years warranty from
the date of Taking Over Certificate.

2. Warranty Period for LED Fixtures: 5 years warranty from the date of Taking Over
Certificate. The warranty shall clearly indicate that there is no limitation on the
luminaire operating profile.

3. PV modules: PV modules shall be provided with Product and Power output

warranties as follows:
a. Product warranty: Ten (10) years product warranty from the date of Taking
Over Certificate. Warranty to include but not limited to: modules, junction
boxes, bypass diodes and cables and connectors associated with the
modules.
b. Power output warranty: For a minimum of 25 years from the date of Taking
Over Certificate. Guaranteed power output performance shall ensure that the
first-year degradation in modules power doesn’t exceed 2.5% of modules
nominal rated power at STC and with linear annual degradation afterwards
such that the power output after 25 years of operation is 80% of the nominal
power rating at STC as a minimum. Any deviation from the guaranteed
performance shall be compensated by the Contractor.

1.8 EXTRA MATERIALS

A. Furnish extra materials described below that match product installed and that are
packaged with protective covering for storage and identified with labels describing
contents.
1. Replaceable LED Lamps: 3% of each type and rating installed. Furnish at least one
of each type.
2. Fully Equipped LED Lighting Fixtures: 1% of each type and rating installed.
Furnish at least one of each type.
3. LED Drivers: 1% of each type and rating installed. Furnish at least one of each type.
4. PV modules: 2% of each type and rating. Furnish at least two of each type.
5. Charger Controllers and batteries: 2% of each type and rating installed. Furnish at
least one of each type.

B. Tools and Instruments: Provide tools and instruments required for normal routine
inspection, testing, operation and general maintenance, as recommended by the
manufacturer.

PART 2 - PRODUCTS

2.1 STANDARD COMMERCIAL PRODUCTS

A. Refer to Division 01 Section 016000, “Product Requirements”.

2.2 MINIMUM SYSTEM PERFORMANCE AND GENERAL REQUIREMENTS

A. The lighting levels shall comply with CIE115 2010 (Lighting of road for motor and
pedestrian traffic) and SLL code for lighting CIBSE respectively. Manufacturer/ Supplier
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shall consider adequate Light Loss Factors (LLF) factors in their calculations depending
on the percentage of total luminous surface area exposed to dirt accumulation.

B. Exterior lighting system shall be battery operated with an ampere hour rating suitable for
autonomy time of 3 continuous days with lifespan minimum of 5 years.

C. Manufacturer shall suitably size the required PV modules capacity taking into
consideration the power loss due to temperature, soiling, shading and all other applicable
losses.

D. All necessary protection equipment shall be provided as per code requirements. This
includes fuses, breakers, disconnect switches, surge protection devices and the like for
safety purpose.

E. Final solution shall comply with the minimum specified requirements. Any deviation
may only be considered if it can be demonstrated that it exceeds the Specifications and
can provide additional advantages and benefits to the Employer, and subject to
Engineer’s final approval.

2.3 SYSTEM OPERATION PHILOSOPHY

A. When the generated PV power exceeds the load, the PV shall supply the load and the
excess power shall be used to charge the batteries till reaching the fully charged state.

B. When there is no generated PV power, the battery shall cater for the load till reaching
50% depth of discharge.

2.4 LIGHTING COLUMNS

A. Refer to Division 26 Section "Exterior Lighting".

B. Storage batteries and control components shall be installed in weather proof, IP 65

enclosure for above ground installations.
C. Lighting columns shall be provided with suitable accessories to allow adjusting the
azimuth and tilting angle of PV module to suit the installation orientation.

2.5 LED LUMINAIRES

A. Refer to Division 26 Section "Exterior Lighting".

B. LED drivers input voltage shall be 24 V DC to suit the batteries output level.

2.6 PV SYSTEMSystem Description: The PV system shall be stand-alone, off-grid type.

B. All distribution system components and batteries shall be properly installed in suitably
rated enclosures and compartmented cabinets equipped with proper ventilation, all rated
to manufacturer recommendations and requirements, based on Saudi Arabia prevailing
climatic conditions as indicated in Division 26 Section "Basic Electrical Materials and
Methods".
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C. PV Modules:

1. PV modules shall be Mono-Crystalline type having minimum efficiency of 19% at

Standard Test Conditions (STC).
1. PV Modules shall comply with the requirements of Division 26 Section
"Photovoltaic Energy System".

D. Charge Controller

1. Controller Type: Maximum Power Point Tracking.

2. Efficiency: 97% as a minimum.

3. Electrical characteristics to be selected based on applications requirements and

operating conditions.

4. Minimum Protective Measures:

a. Over-voltage protection.
b. Under-voltage protection.
c. Over-current protection.
d. Reverse-current protection.
e. Over-temperature protection.
f. Ground-fault protection.
g. Over charge / deep discharge.

5. Regulatory
Approvals: a. UL
1741.
b. Or approved equal European standard.

E. Batteries:

1. Batteries shall be maintenance free, VRLA sealed leak proof, gel type, voltage as
per manufacturer’s recommendations and in compliance with IEC 60896 and DIN
40742. Batteries shall have extremely low gas generation, low self-discharge and
have permanently sealed pressure release vents. Batteries shall be shippable and
recyclable.
2. Battery ampere-hour rating shall be sufficient for the period specified with all
luminaires operating at full luminous output, to a discharge limit of not less than
1.75 V per cell. Cells shall be normally maintained at 2.25 V per cell. Guaranteed
life shall not be less than 5 years, with a capacity drop down to not less than 80%
under normal expected service.
3. Batteries shall be provided with a provision for maintenance made in accordance
with EN 50272-2 and manufacturer’s recommendations.
4. Date of manufacture shall be stamped on each battery and shall be less than 3
months from the date of delivery to the site.
5. Battery calculations according to IEEE 485 shall be carried out by the supplier and
submitted for approval, based on the following:
a. Nominal active power factor of not less than 0.9 Lag
b. Temperature factor for operation at Saudi Arabia prevailing ambient
conditions as indicated in Division 26 Section "Basic Electrical Materials
and Methods".
c. Aging factor of 1.25.
d. Design margin factor of 1.15.
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e. Cell end voltage of 1.75 V.

f. Recharge time not exceeding 8 hours so that the battery can perform at least
80 % of their specified duration.

F. PV system earthing shall comply with IEC 61730 and IEC 60364-7-712 requirements.

2.7 MISCELLANEOUS REQUIREMENTS

A. Lighting shall be controlled through photo-eletctric relays. The photo-electric relays shall
be solid state, with single-pole, double-throw dry contacts rated to operate connected
relay or contactor coils or microprocessor input, with light level monitoring ranging from
0 to 2000 lux, with an adjustment for turn-on/turn-off levels and with time delay to
prevent false operation. Relays shall have weathertight housing, resistant to high
temperatures and equipped with sun-glare shield and ice preventer. Relays shall be
adjusted to switch on lights when the daylight illumination reduces to 70 lux, unless
otherwise required by the Engineer.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Examine substrate areas and conditions, with Installer present, for compliance with
requirements for installation tolerances and other conditions affecting performance of the
Work.

B. Do not begin installation until mounting surfaces have been properly prepared.

C. Examine modules and array frame before installation. Reject modules and arrays that are
wet, moisture damaged, or mold damaged.

D. Examine supports, and supporting structures for suitable conditions where PV system will
be installed.

E. Proceed with installation only after unsatisfactory conditions have been corrected.

3.2 INSTALLATION

A. Coordinate installation of components in accordance with manufacturer's installation

instructions.

B. Equipment: Install equipment to be readily accessible for operation, maintenance and repair.

C. Column Bases: Install columns on concrete bases as detailed on the Drawings.

D. Before commencement of construction, ensure that bases are suitable for column
installation.
E. Holding Down and Plumb Adjusting Nuts, Washers, Locknuts or Nyloc Nuts: Stainless steel
or cadmium plated.

F. Columns: Erect columns so that luminaires are located on a line parallel to theoretical
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profile of road. Alignment of columns, both horizontally and vertically, shall be secured
to the satisfaction of Engineer. Brackets are to be set at 90 degrees to longitudinal axis of
road.

G. Install poles as follows:

1. Use web fabric slings (not chain or cable) to raise and set poles.
2. Mount pole to foundation with leveling nuts, and tighten top nuts to torque level
recommended by pole manufacturer.
3. Secure poles level, plumb, and square.
4. Grout void between pole base and foundation. Use non-shrinking or expanding
concrete grout firmly packed in entire void space.
5. Use a short piece of 13-mm diameter pipe to make a drain hole through grout.
Arrange to drain condensation from interior of pole.

H. Luminaire Attachment with Adjustable Features or Aiming: Attach luminaires and supports
to allow aiming for indicated light distribution.

I. Mounting Adjustments: After demonstrating to Engineer that specified lighting

requirements have been met, carry out final setting and locking in position of the
floodlights.

J. Luminaire Attachment: Fasten to indicated structural supports.

K. Lamp luminaires with indicated lamps according to manufacturer's written instructions.

Replace malfunctioning lamps.

L. Provide labeling of luminaries using stainless steel labels fixed to adjoining surface with
suitable anchor screws.

M. Accurately fit, align, securely fasten and install free from distortion or defects.

3.3 INSPECTION AND TESTS ON SITE

A. Visual inspection is to include inspection of condition of each piece of equipment, quality of

workmanship, alignment, perpendicularity, labeling and the like, all in conformance with
the Specification.

B. Insulation resistance and continuity tests are to be carried out on each circuit and piece of
equipment before energization, with circuit breakers in the open position and lamps not
installed.

C. Operational tests are to be carried out on all electric equipment, with lamps installed,
including recording voltage at terminals of equipment.

D. Performance tests are to be carried out after 100 hours normal operation, and are to include
measurement of lighting and uniformity levels on required illuminated surfaces.

E. Test installation for reflectivity to ensure no-glare is transmitted to pilots and air traffic
control towers at all times of the day.

F. Other tests are to be carried out as required by the Engineer to verify conformity with the
Specification.
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G. Earthing resistance tests are to include measurement of earth electrode resistance at final
points of circuits and continuity of protective conductors.
H. Results of tests are to be recorded on site and signed by witnessing parties.

I. Provide calibrated instruments to make and record test results.

J. Tests and Observations: Verify normal operation of lighting units after installing luminaires
and energizing the luminaires through the batteries and photovoltaic panels, and as
follows:

1. Measure light intensities at night if specific illumination performance is indicated.

Use calibrated photometers.
2. Check intensity and uniformity of illumination and for 3 consecutive days.
3. Check excessively noisy drivers.

K. Examine modules and array frame before installation. Reject modules and arrays that are
wet, moisture damaged, or mold damaged.

L. Prepare a written, numbered report of tests, inspections, observations and verifications

indicating and interpreting results.

M. Malfunctioning Fixtures and Components: Replace or repair, then retest. Repeat procedure
until units operate properly.

3.4 CONNECTIONS

A. Ground Equipment: Tighten electrical connectors and terminals according to manufacturer's

published torque-tightening values.

B. Ground metal poles/support structures according to local standards and regulations.

1. Nonmetallic Poles: Ground metallic components of lighting units and foundations.
Connect luminaires to grounding system with conductor in accordance with
Regulations.

3.5 IDENTIFICATION

A. Identify equipment and components according to Division 26 Section "Basic Electrical

Materials and Methods" and comply with EN 50380.

B. Modules rated for maximum system voltage exceeding 50 V shall have a highly visible
warning label regarding shock hazard and it shall be applied near module’s connection
means.

C. All system components which may be energized during daylight shall be labelled as
required in local codes and regulations, in addition to a "Live during Daylight" label.

3.6 CLEANING AND ADJUSTING

A. Clean units after installation. Use methods and materials recommended by manufacturer.

B. Cleaning strategy shall be developed covering the cleaning method and cleaning frequency
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while considering the site’s environmental condition and in order to ensure that the
maximum annual loss due to soiling doesn’t exceed 3%.

C. Adjust aimable luminaires and luminaires with adjustable lamp position to provide required
light distributions and intensities.

D. Upon completion, remove surplus materials, rubbish, tools and equipment.

3.7 PROTECTION

A. Protect installed products from damage during construction in accordance with the relevant
section of the specification.

B. Repair damage to adjacent materials caused by solar electric module installation.

3.8 DEMONSTRATION

A. Train Employer's maintenance personnel to adjust, operate, and maintain the system
installation. The training shall be conducted by each system component’s supplier.
Provide written troubleshooting guidelines and maintenance / cleaning procedures. Refer
to Division 01 Section "Demonstration and Training."

END OF SECTION 265614