5
RoHS
The Sceptalight product offering is compliant with the new
RoHS Directive. RoHS, established by the European Union
(EU), restricts the use of six hazardous materials listed
below that can be manufactured within electronic/electrical
equipment. The maximum concentrations are 0.1% (except
for Cadmium which is limited to 0.01%) by weight of
homogeneous material.
RoHS restricts the use of several substances:
1. Lead,
2. Mercury,
3. Cadmium,
4. Cadmium VI
(also known as hexavalent chromium or Cr6+),
5. Polybrominated Biphenyls (PBB), and
6. Polybrominated Diphenyl Ester/Ether (PBDE).
Bonding
As stated in the NEC, metal raceways are required to meet
the ground-fault current performance requirements of 250.4
(A) & (B), which states that
"
non-current carrying conductive
materials enclosing electrical conductors or equipment, or
forming part of such equipment, shall be connected together
and to the electrical supply source in a manner that
establishes an effective ground-fault current path
"
.
Several methods for effective bonding are provided within
section 250 of the NEC for various types of applications,
such as; Bonding at the Service (250.92 (A) & (B)), Bonding
Other Enclosures (250.96), Bonding in Hazardous
(Classified) Locations (250.100), etc. Each of these
applications requires different bonding methods to establish
the necessary ground-fault current path.
The NEC indicates that for all applications and locations
that the Sceptalight nonmetallic light fixtures will be used,
bonding-type locknuts and bushings can be used to bond a
metal raceway.
The Underwriters Laboratories General Information Directory
(commonly referred to as the UL White Book) describes
bonding bushings and grounding bushings as follows:
Bonding Bushing: A bonding bushing provides a means to
make a reliable connection between a metal conduit and an
enclosure. This means is typically one or more set screws.
Grounding Bushing: Provide a means to make a bonding
connection between a conduit and enclosure, and also have
some mechanism for connecting a bonding wire.
