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Contents
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06
U.S. Government relies on AET to provide Solar mounting solutions for Military installation
18 26
8 Items Electricians Need to Consider When Going Solar
Making Use of Portable Video Inspection Tools in Underground Vaults
28
Stiebel Eltron Thermal Solar Water Heating System
34
Hyster Company Names Dealer of Distinction Recipients Recipients honored with special celebration
36
Advertiser Index
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06
PRESIDENT/PUBLISHER Glen Hobson - 205-733-1341 SALES DEVELOPMENT MANAGER Hank Underwood - 205-733-1343 NATIONAL SALES MANAGER Rick Harless - 205-733-1324 CIRCULATION DIRECTOR/WEB DESIGN Jacklyn Hobson CREATIVE DIRECTOR Derek Gaylard ART DIRECTOR David Todd Executive and Advertising Offices 2070 Valleydale Rd, Suite # 6 Hoover, AL 35244 toll free: 866.981.4511 phone: 205-733-1341 fax: 205-733-1344 www.theelectriccurrent.com The Electric Current is distributed free to qualified subscribers. U.S. Postage paid at Birmingham, Alabama and additional mailing offices. The Electric Current is distributed to to qualified owners and managers in the electrical industry. Publisher is not liable for all content (including editorial and illustrations provided by advertisers) of advertisements published and does not accept responsibility for any claims made against the publisher. It is the advertiser’s or agency’s responsibility to obtain appropriate releases on any item or individuals pictured in an advertisement. Reproduction of this magazine in whole or in part is prohibited without prior written permission from the publisher. POSTMASTER: Send address changes to The Electric Current 2070 Valleydale Rd., Suite #6 Hoover, AL 35244 PRINTED IN THE USA
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The Electric Current May 2011
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RELIES ON AET
U.S. GOVERNMENT
to provide Solar mounting solutions for Military installation
6
The Electric Current May 2011
In February of 2010, Applied Energy Technologies (AET) received an inquiry, not unlike hundreds of others, about their stainless steel mounting system. The system (trademarked as Rayport么) was identified by PV integrator and installer DRI as a potential candidate for a large project located at the Naval base in Pearl Harbor, Hawaii, that the company had recently been awarded by the US Navy through a local Hawaiian developer, Niking.
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Following normal protocol, AET began to discuss the common variables needed to be identified in order to bring a project to life: panel type, panel angle, and weight limitations on the building, given wind speed and height factors. There were three major requirements of the mounting system. It needed to be stainless steel, be able to hold the panels at a 0-degree (horizontal) tilt, and meet the aggressive weight restrictions established
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for the buildings that would house the PV arrays. A proposal was required within weeks. This call turned into a bit more of a challenge than the normal project, said Aaron Faust, VP of Business Development at AET. Through layout and loading analysis, along with design modifications to the Rayportô Stainless Series Roof Ballast System, AET was off and running to meet its potential new customers’ requirements.
The Electric Current May 2011
In less than three weeks, a joint site visit by DRI and AET was completed, layout drawings were assembled, loading analysis was complete, and the project was a go for AET. As the only stainless ballasted system available on the market, the Rayportô turned out to be the right choice for DRI and the Navy. ìIn contrast to other ballasted racking systems in the industry, the stainless material provides advantages
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Ease of ordering and installation are two more benefits of the Rayport么 mounting system.
over typical anodized aluminum or galvanized steel, said Faust. Along with increased corrosion protection, grounding of the stainless steel system is big part of the appeal. Stainless steel is a conductor, and its surface does not need to be penetrated to bond components electrically.
10
In aluminum or standard steel, the anodized or galvanized layer needs to be penetrated in order to reach the conductive raw material underneath. This is established by the use of surface penetrating fasteners, thus adding cost through both component counts and in-
The Electric Current May 2011
creased assembly times on the job site. With the Rayport么 mounting system grounding is made substantially easier on the job site; the racking only needs grounding once every 20 rows. 矛The fact that Rayport么 is linked through the columns allows the installer to use minimal grounding lugs and copper, thus tangibly saving time and money on the install, explained Faust. Ease of ordering and installation are two
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more benefits of the Rayportô mounting system. Rayportô is the fastest of the flat roof systems to install. We designed this system with the end user in mind, said Faust. We came from the auto industry where components must be designed in essence to build themselves. Our philosophy is not to design in a vacuum. We spoke with installers to find out what worked and did not work for them. Listening to installers, AET engineered the system to simplify the entire process for installers from ordering (there are only four part numbers) to installation. Another highlight of the Rayportô is the modular design. Unlike most solutions on the market, adjusting the placement of the Rayportô module on the array is easy. In the event that an obstruction is mis-measured or not accounted for (i.e. an air condition unit or roof drain) the Rayportô modules can be easily relo-
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cated without any fabrication work. No drilling or cutting is required. The Rayportô is also elevated off the roof, allowing water to pass under the system. In many cases it naturally accommodates roof vents, conduit, and drains, minimizing the need to work around obstacles. This flexibility of the system adds to ease of installation on non-uniform roof surfaces. On the Pearl Harbor project one more consideration was the additional weight required to hold the ballasted system on the roof. Additional building weights are finite and have to be accounted for when adding a ballasted system. Panel angle, wind speed, building height, surrounding buildings and landscape (category zone), and seismic factors all determine the amount of weight required to hold the system down. Steeper tilt
The Electric Current May 2011
angles, higher wind speeds and taller buildings can greatly affect the final loading numbers on ballasted projects,î said Faust. ìFor the Pearl Harbor project, we were able to analyze each building and come in at the weights they needed. The zero-degree tilt of the panels was a major factor. Through their full-service approach, AET delivered a product that met the requirements of DRI, Niking, and the Navy. AET offers mounting solutions that fit every solar panel on the market. The modular nature of its mounting systems accommodates all solar module sizes and substantially simplifies the design and ordering process. For every project AET provides a full layout and loading analysis. These factors all contributed to the success of the Pearl Harbor project. For more information visit AETenergy.com. ❑
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8 Items Electricians Need to
Consider When Going Solar After 4 years and 500 solar alumni who have gone through our training, this is the list that every electrician should go through and become familiar with when thinking about entering the solar industry.
A
t HeatSpring Learning Institute, we do a lot of NABCEP certified solar training for electricians who are going to be starting companies in solar or moving their existing business into solar. After 4 years and 500 solar alumni who have gone through our training, this is the list that every electrician
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should go through and become familiar with when thinking about entering the solar industry. This is not everything you need to know, but it is a start. Each item will not be comprehensive either, but it will give you a template for further research that you’ll want to complete when thinking about the industry. We wanted
The Electric Current May 2011
to focus on a few of the most important elements an electrical contractor should be familiar with when looking at solar. 1. What do you want to do in Solar? 2. What you know vs. what you need to learn. 3. How to Pull a Solar Permit? 4. What’s the deal with incentives?
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1. WHAT DO YOU WANT TO DO IN THE SOLAR INDUSTRY? The first question you need to ask yourself is what you want your role to be in the solar industry. The answer to this question will determine how much and where you need to put your effort. There are three main paths for electricians. The first, starting or running a company that is installing solar. The second, working as a project manager coordinating crews for the installation of projects. The last, simply working in the field installing arrays. If you’re a small or mid-sized business owner running a solar company, you need to know everything, and it’s very likely you’re going to be wearing many hats, similar to any small business. You’ll need to be an incentive expert, understand sales and permitting, and know how to select proper partners for your solar business. If your goal is to become a project manager, you will probably not be dealing with sales and incentives, but you will need to be familiar with solar code (section 609 NEC), roofing and structural loading of the building, and DC wiring. If your goal is to use your license to become an installer, you’ll need to be very familiar with solar code and best practices but will never be touching incentives, sales, roof or structural issues. Understanding what your specific goals are in solar will be critical to making the right decisions about training you will need, and identifying what aspects of the solar industry you lack and need to research. For the sake of this article, I will be as thorough as possible and will write for those who plan on starting a business or expanding a business into solar as it is the most extensive list.
2. WHAT YOU KNOW VERSUS LACK On the surface, because solar is producing electricity, is seems to be a job clearly in the realm of electricians. However, because of the overlap with policy, the roof, and the structure of the building,
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The Electric Current May 2011
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there are many more trades involved with solar than just electrical. What electricians know well: AC Wiring: The one thing that all electricians in the USA are very familiar with is AC wiring. This means that you’ll be very familiar with everything
If you want to get into solar, you need to find a good structural engineer to work with.
from the inverter into the existing service. What you’ll need to brush up on: Structural: The main issue that solar companies need to deal with, that an electrical contractor would not normally have to deal with, is structural loading issues. Other than financing, structural issues with the roof are the main obstacles that stop small and light commercial projects from getting permitted. On occasion, there are residential roofs that will need some reinforcing as well to meet code. If you want to get into solar, you need to find a good structural engineer to work with. DC Wiring: It is likely you will not be as familiar with DC wiring, particularly with DC combiner boxes and disconnects. There is no specific training to take, and it is something that is typically picked up on the first couple of jobs. Sales: The main difference between solar and electrical work is that in solar you need to convince the customer to go solar and pick your contracting company. When submitting bids to wire a house, the homeowner will be getting electricity-they just need to pick the contractor they wish to work with. This means that you bid on the job and wait, no real sales skills required. With solar, you must convince the customer to go solar and pick
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you. This requires more sales skills bestamped from a professional engineer cause typically you need to find cus- 4. Structural Diagram with Stamp - A ditomers, visit them, show them the agram providing that the existing roof economic value and put a fire in them can hold the weight of the panels, live that makes them want solar. loads, and snow loads stamped by a Incentives Paperwork: Aside from professional engineer 5. Cut Sheets - The cut sheets provided by the manufacturer for all the products you will be using in the product. Mainly AHJ want to make sure everything is UL listed
4. INCENTIVES
structural and sales, incentives are the third element that sets solar apart from the typical electrical contracting business. Be prepared to become a solar incentive master. You’ll not only need to understand this to sell the job but also to apply for interconnection with the local utility and make sure that you get paid.
3. UNDERSTANDING HOW TO PULL A PERMIT As a contractor, you’re familiar with the process of applying for permits. There is no standard process for permitting a solar job. Your best bet is always to call the local building department and ask, “What do I need to pull a solar permit?” Recently, fire departments are becoming more active when it comes to permitting solar jobs, so you’ll want to contact the fire department as well. Here are the elements you’ll typically need to provide in order to permit a solar job: 1. Electrical License - For the electrical wiring 2.Construction Site Supervisors License For the building/structural work 3. Three Line Diagram with PE Stamp - A detailed three-line diagram of the system, with all necessary calculations
The Electric Current May 2011
Incentives are the largest difference between solar and electrical contracting. There are six main types of incentives that the government uses to incentivize the adoption of solar technology. It will be important that you understand each one. Also, you’ll need to become very familiar with your region. The incentives change by utility, state, and local municipality. 1. Tax credit - Tax credits are a reduction in the amount of tax’s that must be paid to the government. Typically, they are given in a lump-sum for a system or per kW rated size of the system. Note that only organizations with a tax appetite can use tax credits. Also, some laws will allow you to use a tax credit over multiple years if an organization’s tax appetite is not large enough to use it in one year. 2. Grant - Where a tax credit is a reduction of money that an organization needs to pay, a grant is an actual check from the government directly to the organization. The benefit is that the money comes faster and can be applied to all organizations, tax appetite or not. 3. Feed-in-Tariff - Also known as a FiT, a Feed-in-Tariff is a structured payment, where the utility will pay for every kWh produced by a solar power system. This is a production-based system as opposed to a credit. Productionbased incentives are determined based on the produced kWh AC of the system and not the rated installed capacity in kW DC. 4. SREC - SRECs stand for Solar Renewable
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It doesn’t matter if you are going to be selling, installing, managing, or designing-- everyone will benefit from
quality training about solar.
rals from the company--spend 20 minutes and make a few phone calls. If you’re just entering the industry, you’ll surely have some questions about products, sales, and how to select a distributor, and you’ll want someone you can rely on for help.
6. RESOURCES Energy Credits and are a productionbased incentive similar to the FiT, except their exact price is determined by the market instead of the government. The purchaser is the same. If you want more information, see HOW SRECs WORK - http://blog.heatspring.com/ how-do-srecs-work/ 5. Accelerated Depreciation - Depreciation is a tax-based incentive that the federal government uses to decrease the cash investment of a solar investment on the first few years of operation. Accelerated depreciation allows an organization with a tax appetite to write up 100% of the system cost within the first five years of operation on a specified schedule. This will decrease the amount other organizations pay in taxes. The ALL-in-ONE Incentive Database is called DSIRE - http://www.dsireusa.org/ . Become very familiar with this website. It can be a little hard to interpret, but all the information about every single incentive is listed here and is updated often.
5. TRAINING BUYER BEWARE; when purchasing training, there are a lot of training providers coming into the market. Some are good, but some are bad. You’re smart--just do your homework. Everyone looking to get into solar should take some quality technical training so they understand how the systems work, how they are designed, solar code and some basics of sales and incentives. It doesn’t matter if you are going to be selling, installing, managing, or designing--everyone will benefit from quality training about solar. Here’s a list of the top six characteristics of quality training that every contrac-
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Here is a comprehensive list of solar tor should look into when purchasing resources you’ll need to become familiar training to make sure you don’t waste with for success in the solar industry. ❑ your money. 1. Quality Trainer - Ideally the best trainer Publications: will have been in the solar industry for Home Power at least five years--better if more than http://homepower.com/home/ ten. This is rare, but only with this level Solar Pro - http://solarprofessional.com/home/ Solar Today of experience can an instructor answer http://www.ases.org/index.php?option=com_ all questions you might have. 2. Licensed Electrician - Understanding content&view=article&id=14&Itemid=22 Solar Industry code is key to quality jobs. Don’t take your first training with a trainer who is http://www.solarindustrymag.com/home.php Photon International - http://www.photonnot an electrician. You’ll also want to make sure the trainer is an ISPQ Certi- magazine.com/ HeatSpring Magazine – fied Master Training. You can find the list of ISPQ Certified Master Trainers http://blog.heatspring.com here: http://irecusa.org/irec-programs/ispq-training-accreditation/ispq- Textbooks Photovoltaic Design and Installation Manual awardees/. Also, you’ll want to make sure the instructor is NABCEP Certified. http://www.amazon.com/Photovoltaics-InstallaYou can find that list here: tion-Solar-Energy-International/dp/0865715203 Photovoltaic Systems http://www.nabcep.org/installer-locator 3. Certification - Make sure the first train- http://www.amazon.com/Photovoltaicing you go to has been certified by IREC Systems-James-P-Dunlop/dp/tags-on-prodwith the ISPQ certifications. This is a uct/0826913083 NEC 2011: quality control measure to make sure that the training properly addressed all National Electric Code NFPA 70 the elements of solar, which is much http://www.amazon.com/National-Electricalmore than electrical work. You can find Code-Bundle-Package/dp/0840022255 that list here: http://irecusa.org/irec-proOrganizations grams/ispq-training-accreditation/ American Solar Energy Society ispq-awardees/eastern/ 4. Location/Timing - Some training http://www.ases.org/ Solar Energy Industry Association providers only have a few locations and require you to spend a lot of time http://www.seia.org/ traveling. Try to find a local training Industry Events provider. PV America Series 5. Product Agnostic - Product training is great after you understand the tech- http://www.pvamericaexpo.com Solar Power International nology. Make sure your first training or two is in product agnostics so that http://www.solarpowerinternational.com/2011/ you can focus on learning the technol- custom/spi/index.htm NECA - http://www.necanet.org/ ogy and not be sold a product. Mid West Renewable Energy Fair 6. Alumni Resources - Make sure your training provider helps to support their https://www.midwestrenew.org/ InterSolar - http://www.intersolar.us/ alumni after the training. Ask for refer-
The Electric Current May 2011
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Making Use of Portable Video Inspection Tools in Underground Vaults
R
emote viewing cameras are increasingly being used for underground inspection applications by urban utility companies for a number of purposes. One compelling case to be made for sending a camera down a manhole before sending a crew member is if there has been a fault. A completely unknown situation could exist in the vault that makes a confined space entry especially dangerous. Using a steerable, self-illuminated video zoom camera on a telescoping pole can give the operator a clear picture of the nature of the space and what is required to make a safe entry. Thermal camera technologies that can be installed on the end of a pole and viewed safely from aboveground have the added advantage of being able to see some detail through smoke and also clearly identify hot spots from faulty components. 26
Day-to-day underground operations may involve preventative maintenance. Remote viewing pole cameras help inspect the general condition of a vault (hangers, conductors, conduit, and general structural integrity) from aboveground. In most cases, conduit number and conductor tags can also be read from aboveground. Another use for this technology has been for auditing conductors and other vault components in preparation for future work to make sure the actual assets match the future plans. Many urban utility companies are restricted from opening and spending too much time at a manhole site when it disrupts traffic. For some applications a quick look with a pole camera can greatly reduce the time required. Zistos Portable Video Systems has a versatile pole camera system that is used by several power utility companies for a number of applications in underground
The Electric Current May 2011
vaults. The Zistos Utility Vault Inspection Kit comes standard with a self-illuminated 10:1 zoom camera, a 14 foot articulating, telescoping pole and a small tripodmounted display system. The kit sets up in a few minutes and packs down into a rugged, foam-fitted hard plastic case. All components are rugged and weatherproof to function in real-life field conditions without problems. An optional Dual View Thermal and Black & White camera can be readily changed out for the zoom camera to look for temperature variations and hot spots. Then, instantly switch to black and white video for a better look at the details surrounding the point of thermal interest. A second operator has the ability to connect a laptop computer either wirelessly or inexpensively through a ten foot plus cable. This allows another set of eyes on the inspection process and can put the computer operator outside the immediately cordoned off work zone. They can record still as well as video images on the laptop. The supplied software can be used to annotate the photos for documentation purposes or emailing back to the shop for additional consultation, etc.. All of these activities save time, allow crews to stay productive and reduce downtime. It seems that when the portable video equipment starts being used for one application other uses for it are also found. After fielding the equipment for several months, an existing Zistos user commented, “I breathe a little easier knowing that the Zistos cameras are available and that we have taken other steps to significantly reduce the risk to our people.� Zistos is happy to provide a demonstration at your facility to show how the system can be a cost-effective solution to reduce risks, and be more proactive with preventative maintenance inspections. Contact Zistos for more information 631-434-1370, utility@zistos.com, www.zistos.com/Industrial.htm. �
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New Products
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Stiebel Eltron Thermal Solar Water Heating System Stiebel Eltron SOLKITS 2 and 3 thermal solar systems are Energy Star Rated and have SRCC OG300 system certification. The SOLKITS consist basically of a well-insulated storage tank with heat exchanger(s) and high performance flat plate collector panel(s). They constitute a very economical and reliable solar domestic hot water (DHW) system for commercial and residential applications, including space heating and swimming pools. The solar closed loop system includes SOL 27 PREMIUM flat plate collector panel(s)
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The Electric Current May 2011
and mounting hardware, a SB/SBB storage tank with heat exchanger(s), a pump station with expansion tank and various temperature / pressure gauges, pressure relief and check valves, and a controller unit with corresponding sensors. Stiebel Eltron thermal solar equipment is the culmination of over 30 years of experience in the thermal solar business. There is an industry leading 10-year warranty on Stiebel Eltron solar panels and tanks. For more information please visit our website at www.stiebel-eltron-USA.com or call us at (800) 582-8423. â?‘
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Industry News
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Hyster Company Names Dealer of Distinction Recipients Recipients honored with special celebration Hyster Company recently honored its top-performing dealers with its prestigious Dealer of Distinction award. The 2010 award-winning celebration, held in New York City, marked the 17h year that Hyster has honored its dealers for their industry-leading level of performance in all areas of the materials handling business. “Hyster Company’s Dealer of Distinction Awards Program recognizes the significant contribution our dealers make in achieving our distribution goals and objectives,” said Don Chance, president of
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The Electric Current May 2011
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sales for NACCO Materials Handling Group, Inc. “The quality of service and the consistency in which our dealers exceed the expectations of our end users makes them an integral component of our growth and success.” To become a Dealer of Distinction, dealers must reach elevated goals in customer satisfaction, dealer performance, general management, truck sales, short-term rental, training, aftermarket sales, and parts and service operations.
RECIPIENTS OF THE DEALER OF DISTINCTION AWARD INCLUDE: Arnold Machinery Company – Utah Equipco Division Phillips Corp. MH Equipment – Iowa Machinery MH Equipment – Illinois MH Equipment – Ohio South Papé Material Handling, Inc. – Portland Papé Material Handling, Inc. – Eugene Papé Material Handling, Inc. – Central Washington Papé Material Handling, Inc. – Spokane Papé Material Handling, Inc. – Fresno Wajax Industries – Prairie
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The Electric Current May 2011
ABOUT HYSTER COMPANY Based in Greenville, N.C., Hyster Company (www.hyster.com) is a leading worldwide lift truck designer and manufacturer. Hyster Company offers 130 models configured for gasoline, LPG, diesel and electric power, with the widest capacity range in the industry — from 2,000 to 115,000 lbs. Supported by the industry’s largest and most experienced dealer network, Hyster Company builds tough, durable lift trucks that deliver high productivity, low total cost of ownership, easy serviceability and advanced ergonomic features; accompanied by outstanding parts, service and training support. Hyster Company is an operating division of NACCO Materials Handling Group, Inc. (NMHG), which employs approximately 5,000 people worldwide. NMHG is headquartered in Cleveland, Ohio, and is a wholly owned subsidiary of NACCO Industries, Inc. (NYSE:NC). Hyster and are registered trademarks of Hyster Company in the U.S. and other countries. ❑
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Advertiser Index
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Company Name AET Energy Alcan ARPI of USA Bierer & Associates Bud Ferguson's Industrial Supply Cementex Dee Zee Mfg. Dexter + Chaney Haticon Solar Hioki USA ICUEE Krenz Vent KVAR Lapp USA LED Tronics, Inc. Legrand/Cablofill NABCEP Noren Products Ontility Phase-A-Matic Ram Mount Solar Pathfinder Steelman Industries Summit Technology Inc. SunWize Underground Devices Utility Metals Zistos Portable Video Systems
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The Electric Current May 2011
Page Number 7 IFC 32 21 35 33 9 2 13 4 27 32 29 BC 17 1 16 30 25 23 19 34 34 12 3 11 IBC 15
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