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The "Revised"Solar
Photovoltaic Workbook by Tom Henry
The Solar Photovoltaic Workbook
based on the 2023
NEC
I have revised this book "The
Solar Photovoltaic Workbook" as I have gained so much
valuable knowledge since its first printing that I want to share with
you.
I'm writing this book as a customer, for
the customer and so the prospective PV installer can win the bid by explaining the correct
installation procedure per the manufacturer's instructions
in order to maintain the warranty and harvest the maximum power from
the system and the customer will not be among the over 50% that are
having their PV system installed
incorrectly voiding
the warranty without the customer's knowledge of it.
The problem today is too much material is being written that little or
no maintenance is required after installing a PV system. After reading
this workbook containing the Manufacturer Installation Instructions it
should put an end to those fantasies.
As I
write, I have over 67 years in the electrical industry of which several
years involved inspection and electrical expert testimony in personal
injury and death cases.
I learnt at an early
age in the electrical trade that anything mechanical can fail. It
requires maintenance and inspection to maintain quality and operation.
MAINTENANCE
- I had permanent anchorage installed on my roof for future connection
of the safety harness for
maintenance and service work. OSHA requires a safety
harness when 6' above the ground when performing the key word is work.
CLEANING
- In order to harvest the maximum
power, clean the module surface with water and a soft cloth or sponge
to remove the scum and bird droppings that the rain won't wash away.
Remove any leaves or weeds. Cleaning is recommended a minimum of twice
a year.
How do you clean the modules you can't
reach? You must provide access space to each module and NOT fill the
roof with modules.
A space with a minimum of 16" is
recommended between the arrays to be able to reach the defective module
in the middle without removing several panels which would increase the
labor cost to the customer of the service call.
•Ventilation space under the panels with standoffs of 6".
When I ask how would you remove a
defective module in the center of the roof without removing several
modules to get to the defective one? The reply was,"Yep, you may have
to remove multiple modules to get to the defective one, but the code doesn't care."
It's time for the PV industry to return to craftsmanship skills when
installing a PV system that may operate 40-50 years exposed to the
inclement outdoor weather.
The customer is
investing a substantial amount of money in the PV system expecting a
continued savings on their electric bill.
The
system must be installed correctly to produce the maximum possible
energy. The system must be designed to the manufacturer's
specifications which requires maintenance,
cleaning and inspection periodically, which requires access space to
the modules. These are requirements in the product warranty.
Tips on how to pick
a solar PV contractor, questions the home owner should ask.
Most customers will acquire three or more bids from solar PV
contractors. They may or may not know that it's noted that 50% of PV
installations are installed correctly and 50% are not installed
correctly. Never pick a
company only on price.
It's not a matter of how many solar PV systems one has installed, the
question should be asked is how many have you installed per the manufacturer's
specifications in order to maintain the warranty.
A solar PV system is an investment for the long term. Prefer local
companies that have been in business for a long time, a reputable
company.
The tightening of all mechanical and
electrical connections throughout the entire PV system requires torquing to the
manufacturer's listed specifications.
This starts with the installation of the rail system and continues with
the module T-bolts and midclamp bolts, ground connections, all wiring
to terminal connections at the deck box, inverter, back-fed circuit
breaker, load center connections, meter base connections, everything
requires using torque tools set to the prescribed inch-pounds or
foot-pounds.
How many PV installers are following the
manufacturer's listed specifications for installing the components? How many even have the required
torque tools? Ask them!
This "Revised" workbook written by Tom Henry
will take you from start to finish in designing and calculating the
equipment and wire sizes. This book also contains a 70 question
installers exam with answers. Several states now require this exam.
Start your future today and enter into employment THAT IS THE FUTURE!
Click here to see a sample of this book.
Author: Tom
Henry
Item #810-23
Price
$45.00
••••New Special Combo•••••
Get the Revised Solar PV
Book along with the Solar PV flash cards to
prepare for the PV Solar Exam. 52 Questions and Answers. A Great Way to
memorize what you need to know!
Item
#1326
Price
$50.00
Item
#1325 - Solar PV Flash Cards (only)
Price
$10.00
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