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ELECTRICAL EQUIPMENT — CHECK WITH YOUR INSTALLER

Evergreen Solar ES-C Series photovoltaic (PV, solar electric) panels are designed to produce DC electrical energy from light. This manual  
contains important safety, installation and operating information with which you should be familiar before using Evergreen Solar panels.

General Information

•  All installation and safety instructions should be understood before attempting to 

install, wire, operate and maintain the panel.

•  When  installing,  observe  all  local,  regional,  national  and  international  statutory 

regulations, guidelines, norms and code requirements.

•  Installation or maintenance should only be performed by qualified professionals.
•  

 

Panels produce voltage even when not connected to an electrical circuit or load. 

Panels produce nearly full voltage when exposed to as little as 5% of full sunlight, 

and both electrical current and power increase with light intensity.

•  Panels can produce higher output than the rated specifications.
•  

 

Industry  standard  rated  specifications  are  made  at  conditions  of  1000W/m

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irradiance  and  25°C  (77ºF)  solar  cell  temperature.  Colder  temperatures  can 

substantially increase voltage and power.

•  Ensure that panels are only subjected to ambient temperatures in the range -40 to 

+80°C (-40 to +176°F).

•  Reflection from snow, water or other surfaces can increase light and therefore 

increase both the current and power generated by the panel.

•  Do not artificially concentrate light on the panel.
•  Panels  are  intended  for  outdoors,  land-based  applications  only.  Panels  are  not 

intended for indoor use. 

•  Excluded applications also include, but are not limited to, installations where panels 

come  into  contact  with  salt  water  or  where  likely  to  become  partially  or  wholly 

submerged in fresh or salt water, examples of which include boats, docks and buoys.

•  Use only equipment, connectors, wiring and support frames suitable for use in a 

solar electric system.

•  Follow all safety precautions of other used components.
•  Each panel is marked with a serial number, including the date of manufacture and 

the manufacturing location. Example: XXxxYYYYMMDDzzzzzzz

- XX = country code (49 for Germany, 01 for US, 86 for China)
- xx = manufacturing building code, can be 01 or higher
- YYYY = year, MM = month, DD = day
- zzzzzzz = serial number

Handling Safety

•  Do not use the junction box to hold or transport the panel.
•  Do not stand or step on the panel.
•  Do not drop panel or allow objects to fall on panel.
•  Do not damage or scratch the rear surface of the panel.
•  Avoid setting the panel down hard on any surface, particularly when placing 

it on a corner.

•  Do not disassemble, modify or adapt the panel or remove any part or labeling 

installed by Evergreen Solar. Doing so will void the warranty.

•  Do not drill holes in the frame or glass of the panel. Doing so will void the 

warranty.

•  Do not apply paint or adhesive to the rear surface of the panel.
•  Never leave a panel unsupported or unsecured.
•  Panels are constructed with tempered glass, but must still be handled with care.
•  A panel with broken glass or torn back-skin cannot be repaired and must not be used 

since contact with any panel surface or the frame can produce electrical shock.

•  Broken or damaged panels must be handled carefully and disposed of properly. 

Broken glass can be sharp and cause injury if not handled with the appropriate 

protective equipment.

•  Work only under dry conditions, and use only dry tools. Do not handle panels 

when they are wet unless wearing the appropriate protective equipment.

•  When  storing  un-connected  panels  outside  for  any  length  of  time,  always 

cover panels which have the glass facing down to stop water collecting inside 

the panel and causing damage to exposed connectors.

Installation Safety

•  Keep children away from the system and panels when installing.
•  Do not carry out installation work when there are strong winds.
•  When  installing  panels  above  ground,  avoid  any  possible  falling  or  other 

safety hazards by following appropriate safety practices and using required 

safety equipment.

•  Solar  electric  panels  have  no  on/off  switch.  Panels  can  be  rendered 

inoperative only be removing them from light, or by fully covering their front 

surface with an opaque material, or by working with panels face down on a 

smooth, flat surface.

•  When  working  with  panels  in  light,  follow  all  applicable  regulation  regarding 

working with live electrical equipment.

•  Do not touch electrical terminals or the ends of any wire while the panel is 

exposed to light or while installing the panel.

•  Do  not  wear  metallic  jewelry  while  performing  mechanical  or  electrical 

installation.

•  Never open electrical connections or unplug connectors while the circuit is 

under load.

•  Contact  with  electrically  active  parts  of  the  panels,  such  as  terminals,  can 

result  in  burns,  sparks  and  lethal  shock  whether  the  panel  is  connected  or 

disconnected.

•  Always use insulated tools and rubber gloves that are approved for working on 

electrical installations.

Fire Safety

•  Refer  to  your  local  authority  for  guidelines  and  requirements  for  building  or 

structural fire safety.

•  The roof construction and installation may affect the fire safety of a building; 

improper installation may contribute to hazards in the event of fire.

•  For roof application, the panels should be mounted over a fire resistant covering 

rated for the application.

•  It  may  be  necessary  to  use  components  such  as  earth  ground  fault  circuit 

breakers, fuses and circuit breakers.

•  Do not use panels near equipment or locations where flammable gases can be 

generated or can collect.

Electrical Installation –General Recommendations

•  Avoid all electrical hazards when installing, wiring, operating and maintaining 

a panel.

•  If the total DC system voltage exceeds 100V, the system must be installed, 

commissioned and maintained by a qualified professional.

•  Contact with a DC voltage 30V or more is potentially hazardous.
•  Do not use panels of different electrical or physical configurations in the same 

system.

•  The maximum open circuit voltage of the system must not be greater than the 

specified maximum system voltage for the panel.

•  When reverse currents can exceed the value of the maximum protective fuse 

marked on the back of the panel, a properly rated and certified over-current 

device (fuse or circuit breaker) must be connected in series with each panel 

or string of panels.

•  The rating of the over-current device shall not exceed the value of the maximum 

protective fuse marked on the back of the panel.

•  Panels with a suspected electrical problem should be returned to Evergreen 

Solar for inspection and possible repair or replacement as per the warranty 

conditions provided by Evergreen Solar.

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Valid from 1

st

 December 2009 / 2009-DEC_IM_ES-C_EN_IEC_revA    © 2009 Evergreen Solar, Inc. 

This Manual is valid outside North America only (IEC 61730 compliant; Not UL 1703 compliant)

ES-C Series Photovoltaic Panels

Safety, Installation and Operation Manual

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