Grounding - CanadianSolar CS1V-MS Installation Manual

CORRECT CONNECTION OF CONNECTORS
 Make sure that all connections are safe and properly
mated. The PV connector should not be subject to stress
from the exterior. Connectors should only be used to
connect the circuit. They should never be used to turn
the circuit on and off.
 Connectors are not waterproof when unmated. When
installing modules, connector should be connected to
each other as soon as possible or appropriate measures
(like using connector endcaps) should be taken to avoid
moisture and dust penetrating into the connector.
Do not connect different connectors (manufacturer

and type) together.
 Do not clean or precondition the connectors using
lubricants or any unauthorized chemical substances.
USE OF SUITABLE MATERIALS
 Only use dedicated solar cable and suitable connectors
(wiring should be sheathed in a sunlight-resistant
conduit or, if exposed, should itself be sunlight-
resistant) that meet local fire, building and electrical
regulations. Please ensure that all wiring is in perfect
electrical and mechanical condition.
 Installers may only use single-conductor cable listed
and labeled as or PV wire which is 90°C wet rated in
North America, and single conductor cable with a cross
section area of at least 4 mm² (12 AWG), 90°C wet rated
in other areas (i.e. IEC 62930 approved), with proper
insulation which is able to withstand the maximum
possible system open-circuit voltage. For CS7N-MS,
CS7L-MS and CS7L-MS-R, Canadian Solar recommends
the use of a copper wire of at least 6mm² (10AWG)
section.
 Only copper conductor material should be used. Select
a suitable conductor gauge to minimize voltage drop
and ensure that the conductor ampacity complies with
local regulations (i.e. NEC 690.8(D)).
CABLE AND CONNECTOR PROTECTION
 Secure the cables to the mounting system using UV-
resistant cable ties. Protect exposed cables from
damage by taking appropriate precautions (e.g. placing
EN-Rev IM/GN-AM-EU/2.81 Copyright © December, 2021. CSI Solar Co., Ltd.
them inside a metallic raceway like EMT conduit). Avoid
exposure to direct sunlight.
 A minimum bending radius of 60 mm (2.36 in) is
required when securing the junction box cables to the
racking system.
 Protect exposed connectors from weathering damage
by taking appropriate precautions. Avoid exposure to
direct sunlight.
 Do not place connectors in locations where water could
easily accumulate.

5.2 GROUNDING

 For grounding requirements in North America, a
module with exposed conductive parts is considered to
comply with UL 61730 only when it is electrically
grounded in accordance with both the instructions
presented below and the requirements of the National
Electrical Code. Any grounding means used with
Canadian Solar modules should be NRTL certified to UL
467 and UL 2703 standards. Please consult our technical
service team for the formal approval process.
 For grounding requirements in other areas, although
the modules are certified to Safety Class II, we
recommend them to be grounded and that module
installation should comply with all applicable local
electrical codes and regulations. Minimum size of
equipment grounding conductors for ground raceway
and equipment from
considered. Grounding connections should be installed
by a qualified electrician. Connect module frames
together using adequate grounding cables: the use of
4-14 mm² (AWG 6-12) copper wire is recommended.
Holes provided for this purpose are identified with a
grounding symbol
connection junctions must be firmly fixed.
 Do not drill any extra ground holes for convenience as
this will void the modules warranty.
 All bolts, nuts, flat washers, lock washers and other
relevant hardware should be made of stainless steel,
unless otherwise specified.
 Canadian Solar does not provide grounding hardware.
NEC 690.8(D) should
(IEC 61730-1). All conductive
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