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Author: Mike Leibowitz

Building wire industry steps up for proper installation and use of its products

Building wire industry steps up for proper installation and use of its products

Kudos to the building wire and cable technical committee for taking action over the past several months to publish two new NEMA Engineering Bulletins that are relevant to the growing number of photovoltaic installations. Bulletins 103 and 105 educate contractors on the wiring methods that can be used in PV in addition to those in NEC Article 690, and provide guidance on proper terminating of fine-stranded wire prevalent in these installations. The industry is to be congratulated for being proactive Read more [...]
New NEMA Engineering Bulletin would be a valuable adjunct to photovoltaic (PV) training

New NEMA Engineering Bulletin would be a valuable adjunct to photovoltaic (PV) training

Recently, UL in conjunction with several North Central Texas inspection authorities held a one-day training session on photovoltaic and supporting emerging technologies, including panel discussions on electrical requirement. As more of these training sessions are conducted around the country, UL should consider including as a handout, the newly posted NEMA Engineering Bulletin 103, Photovoltaic Wiring Methods. This Bulletin offers a concise summary of Article 690 wiring methods permitted Read more [...]
Expanded Redlined IEC standards a welcome improvement

Expanded Redlined IEC standards a welcome improvement

IEC’s decision to publish more redline versions of its standards – standards that show where changes from the previous release have taken place – should be a very welcome move for users of IEC publications who rely on knowing what amendments have taken place to current editions. Redlining is a much more manageable way to track changes in a standard than having to deal with a separate amendment publication that presents amendments in the form of instructions, such as “replace” Read more [...]
Calling all NEMA lithium-ion battery manufacturers

Calling all NEMA lithium-ion battery manufacturers

Now is the time for NEMA members in the lithium-ion battery industry to get involved in IEC nano standards work. Balloting of a new work proposal in IEC TC 113 is underway for electrochemical characterization of cathode nanomaterials for lithium-ion batteries. It’s crucial that US industry get involved now, through the IEC TC 113 US Technical Advisory Group. The future of renewable energy significantly depends on the development of efficient systems for energy storage and lithium-ion Read more [...]
US Participation Needed in Quantum Dot Standards

US Participation Needed in Quantum Dot Standards

The TC 113 TAG is about to introduce new work proposals for a specification for characterizing luminescent nanoparticles (e.g. Quantum Dots), and a template specification sheet for these nanoscale materials.  QD’s as a game changer in next-generation LED lighting and medical imaging technologies have begun making inroads in the marketplace, so standardized characterization techniques and a template specification are critical to encourage common language communication between nanomaterial Read more [...]
Proposed New TC 118 for Printed Electronics cause for concern

Proposed New TC 118 for Printed Electronics cause for concern

National Committees to the IEC should give very careful thought on whether or not to support the formation of a new separate TC 118 for printed electronics, now that the question has been presented for a 4-month National Committee vote. With limited technical expert resources available around the world, the IEC should also consider the development of standards for printed electronics within existing relevant IEC technical committees (such as IEC TC’s 91 and 113).  Liaisons with Read more [...]
Graphene standards vital for energy storage

Graphene standards vital for energy storage

With graphene being a promising material for storing hydrogen, and to act as a catalyst in supercapacitors, it’s important that international standards for measuring the electrical reliability of graphene are developed. It’s good to see that the US Technical Advisory Group to IEC TC 113 (TC 113 TAG) is taking the lead in developing these standards, starting with a blank detail material specification, graphene characterization using atomic force microscopy (AFM), and process specifications Read more [...]
IEC Pilot for Reduced CDV Voting Period a Good Call

IEC Pilot for Reduced CDV Voting Period a Good Call

It will be interesting to see how well the IEC's trial period for a reduced voting time for Committee Draft Voting documents (CDV's) works out over the next year. If the trial procedure is adopted, the ability of an IEC Technical Committee to shorten a CDV voting period from the standard 5 months down to say, 3 or 4, would be a welcome change to the rules under which IEC standards are developed.  This kind of flexibility is especially needed for standards for rapidly Read more [...]
Keep an eye nano-enabled printed electronics technologies

Keep an eye nano-enabled printed electronics technologies

IEC TC 113, which develops standards for "nano-electrotechnologies" is exploring standards setting for nano-enabled printed electronics, a $300 billion emerging market. The technology already exists for printing circuitry onto inexpensive substrates using conductive nanomaterial inks like carbon nanotubes and graphene, as well as recently introduced flexible display technologies using quantum dots. With a little bit of thinking outside the box, one could envision printed electronics Read more [...]
Standards key to widespread applications for graphene

Standards key to widespread applications for graphene

Graphene, a super-thin sheet of carbon atoms, could transform the functioning of a wide array of electrotechnical products including flexible displays, solar cells and batteries. Groundbreaking experimentation with graphene was the centerpiece for the 2010 Nobel prize for physics. Due to graphene's ability to conduct electricity with relatively low losses, it could be used, for example, to make conductive flexible plastics for touch screens. The technology does not yet exist for reliably Read more [...]