solarseller.com alternative energy by John Drake Services, Inc. | home
5 Photovoltaics,Batteries, Cable and Wire 7 48 volt D.C. fluorescent lights 8 Low Voltage DC Lights Glossary of Alternative Energy Terms CHARGE CONTROLLERS 36 Solar Converters Special Solar and Battery Charging Equipment 37 TriMetric Battery System Monitors and Deltec Co. shunts 38 Timers,Linear Current Boosters,Photoswitch,Voltage Controlled Switches 39 Battery Desulphator by Solar Converters, Inc. 42 DC Circuit Breakers 48 DC Fuses, Holders & Fuse Blocks 56 Electric Vehicle and Alternative Energy Battery Disconnects 57 Power Distribution & Splicer Blocks 58 Cable and Butt Splices & Connectors BATTERY POST & TERMINAL CONNECTIONS, ADAPTERS AND BATTERY ACCESSORIES 62 Heat Shrink Tubing & Cable Lugs by QuickCable 67 Anderson SB Connectors 72 Iota Engineering Battery Chargers / Converters 73 SAE Connectors, Plugs, Sockets & Cords 75 DC to DC Voltage Converters & Dimmers by Solar Converters 76 Universal Generator Starter switch by Solar Converters 79 QuickCable Tools, Cable Crimper, Cutter & Stripper 81 TriMetric 2030 and SC-2030 Wiring Layout
At the bottom of this page is a list of page links to every page in our website.
24 DC Lighting
We believe that dc low voltage lighting plays an important
role in portable, off-grid, remote, commercial, industrial
and emergency power, survival systems.
This also applies to utility and emergency vehicle
In a portable system:
DC lighting helps to simplify the system by eliminating the need for
a d.c. to a.c. inverter.
It also reduces the system weight.
With less components the system reliability increases.
In many portable systems such as emergency, show, sign and work
work area lighting, the need for a generator is also removed.
In a stand-alone (off-grid) d.c. only system:
With a d.c. only system the power losses incurred by the
inverter are eliminated.
It is not necessary to run an inverter 24 hours a day to have
lights whenever they are needed.
Dependance on a complicated electronic device, the inverter,
is removed for increased reliability.
In a stand-alone (off-grid) a.c. and d.c. system:
Lighting is available whether the inverter is running or not.
In the case of an inverter failure, and the time it takes to get
it repaired or replaced, lighting is still available.
In a remote system:
System reliabilty and efficiency is increased due to reduced
In an inverter based system the addition of dc lighting aids in
maintenance and reduces down time.
In a utility or emergency vehicle:
Wiring is simple and there is a wide selection of types and
In a commercial system:
Utilizing low voltage d.c. components reduces the hazards of
This helps keep liability exposure to a minimum.
Displays can be easily moved and setup without the need of
extension cords when the battery is integrated into the design.
In an industrial application:
Proper low voltage d.c. lighting helps keep down radio frequency
interference which can adversely affect sophisticated electronic
Low voltage dc lighting has many applications in the
tele-communications and machining center venues due to its
inherent benign nature.
The following link will take you to the directory of d.c. lighting
items that we carry:
Types of low voltage d.c. lighting:
Tungsten incandescent (recreational vehicle type) light bulbs.
These are similar to conventional household light bulbs but operate on
low voltage direct current.
By producting light through heating a tungsten filament this is the most
inefficient form of lighting.
These can easily be used with a dimmer switch.
They also have a limited life span.
Tungsten Quartz Halogen light bulbs.
These produce light by heating a thick tungsten filament using the "quartz
The filament is surrounded by a halogenated gas.
It operates at extremely high temperatures, which is why the bulb is made
The combination of a heavy filament and the halogen gas produce a much
more efficient and long lived light source.
The halogen gas returns tungsten atoms thrown off by the filament to itself.
Even though they are much more efficient than standard light bulbs much of
the energy used is wasted.
If you use a dimmer on these the cycle can be interrupted causing the life
span to be shortened.
For most applications these produce the most amount of light for the energy used.
The tubes are available in color temperatures such as 27K (warm white - light an
incandescent bulb), 41K (cool white) and 65K (very cool white - cooler than daylight.)
The ballast in a d.c. fluorescent light is actually an "inverter/ballast".
It inverts the d.c. voltage into an a.c. voltage and then steps up the voltage to fire and
run the fluorescent tube.
Unlike a regular incandescent light, a fluorescent light can not handle many on/off
cycles nor a low voltage condition.
Manufacturers of fluorescent tubes often show the expected life of their tubes at
The fine print reads "with a minimum run time of 3 hours."
In an application involving many short on and off cycles an incandescent or LED light
may be a better choice than a fluorescent.
With fluorescent lights you should make sure that the wire is heavy enough for the
length of wire running from the battery to the light.
Light Emitting Diodes are the most energy efficient light source currently available.
Many led lights use less than 1/10th. of a watt.
LED's, when operated at the proper internal voltage, can run up to 100,000 hours.
LED's are very directional, making them difficult to quantify and compare with either
a fluorescent or incandescent light.
For task and reading lighting they are hard to beat.
Ultra hight intensity led's can be used for some area lighting applications.
Due to the directional nature of led lighting it is always wise to purchase one, then try it
in each location.
Some applications are well served by led lighting and some are not.
copyright by John Drake Services, Inc.
1 Site Search - Quick Index | 2 The Realities of Purchasing On-Line | 3 Why Do Business With Us? | 4 Distributor of IOTA Engineering, Quick Cable and Anderson SB products | 5 Photovoltaics,Batteries, Cable and Wire | 6 Lumen Outputs of Compact Fluorescent and Incandescent Lights | 7 48 volt D.C. fluorescent lights | 8 Low Voltage DC Lights | 9 Low Voltage DC Lighting | 10 DC Fluorescent Outdoor Floodlights | 11 DC Compact Fluorescent Screw-in Ballasts & Tubes | 12 DC Compact Fluorescent Screw-in One Piece Lights | 13 DC Indoor Flood, Ceiling and Cabinet Fluorescent Lights | 14 Portable & Emergency Fluorescent Light by Flexcharge | 15 DC Fluorescent Inverter Ballasts by IOTA Engineering and Montana Light | 16 Charge Controller Musings | 17 Bogart Engineering SC-2030 Solar Charge Controller | 18 PV Solar charge controllers with night lighting load by Flexcharge | 19 Thinlite Indoor Fluorescent Lights | 19 A - LED Lighting by Thin-Lite | 20 Thinlite Outdoor Lights | 21 Thinlite Replacement Ballasts | 22 Thinlite Replacement Lens - Diffusers | 23 Thinlite DC Lighting Products | 24 DC Lighting | Glossary of Alternative Energy Terms | 25 Parallel and Series Battery Bank Information | 26 What we sell and why. | 27 Amps Volts and Watts | CHARGE CONTROLLERS | 28 Emergency and Disaster Preparedness Notes | 29 Photovoltaic Module & System Wiring - Setting Up A PV System | 30 Wind - Hydro - Solar Charge Controllers by Flexcharge | 31 Water and Air Heating Diversion Loads for Charge Controllers | 32 Maximum Power Point Tracking Solar Charge Controllers by Solar Converters | 33 Solar Converters, Inc. Charge & Lighting Controllers | 34 SES Flexcharge Solar Single or Dual Battery Charge Controllers | 35 Thin-Lite ballast replacement installation guide | 36 Solar Converters Special Solar and Battery Charging Equipment | 37 TriMetric Battery System Monitors and Deltec Co. shunts | 38 Timers,Linear Current Boosters,Photoswitch,Voltage Controlled Switches | 39 Battery Desulphator by Solar Converters, Inc. | 40 Solar Converters, Inc. Products | 41 SES Flexcharge Products | 42 DC Circuit Breakers | 43 Thin-Lite products we stock | 44 DC Fuse & Circuit Breaker Types & Installation | 45 UL Listed DC Breakers up to 125 volts | 46 IOTA Engineering IQ4 Smart Charge Controller Owners Manual | 47 Our own alternative energy systems | 48 DC Fuses, Holders & Fuse Blocks | 49 Class T- DC Fuses & Fuse Blocks | 50 ANN - ANL - CNL DC Fuses & Fuse Blocks | 51 Inverter Cable and Overcurrent Protection Guide | 52 Installation and trouble shooting low voltage d.c. lighting | 53 Diodes - Blocking & Bypass, What do they do? | 54 Low Voltage D.C. Lighting Tips | 55 Your On-Line Privacy | 56 Electric Vehicle and Alternative Energy Battery Disconnects | 57 Power Distribution & Splicer Blocks | 58 Cable and Butt Splices & Connectors | BATTERY POST & TERMINAL CONNECTIONS, ADAPTERS AND BATTERY ACCESSORIES | 59 Battery Post Marine Conversions & Terminal Extensions | 60 Battery Post Connectors Conversions Adapters Repair | 61 Battery Terminal - Cable Lug Covers & Protectors | 62 Heat Shrink Tubing & Cable Lugs by QuickCable | 63 Compression Connectors - Lugs | 64 Heavy Duty Cast Copper Connectors - Lugs | 65 Copper Connectors - Lugs by Quick Cable - MAX | 66 Magna Lug Heavy Duty & Fusion Lugs by QuickCable | 67 Anderson SB Connectors | 68 Anderson SB Connector Accessories | 69 Anderson SB Connector Parts | 70 Thin-Lite LED and Fluorescent Comparisons | 71 Overview of Our Photovoltaic Systems | 72 Iota Engineering Battery Chargers / Converters | 73 SAE Connectors, Plugs, Sockets & Cords | 74 Electric Vehicle Power Supplies Converters by IOTA Engineering | 75 DC to DC Voltage Converters & Dimmers by Solar Converters | 76 Universal Generator Starter switch by Solar Converters | 77 Stranded vs Solid Wire in low voltage systems | 78 IOTA Engineering Power and Lighting products | 79 QuickCable Tools, Cable Crimper, Cutter & Stripper | 80 Wire & Cable Gauges and Information | 81 TriMetric 2030 and SC-2030 Wiring Layout | 82 DC to DC Voltage Converters | 83 PowerMax Transfer Switch & TriMetric 2020 Features | 84 IOTA Engineering DLS Battery Charger Features | 85 Lighting Systems | 86 Practical Alternative Energy Applications | 87 Portable and Emergency Power Systems | 88 Custom Cables | 89 Our Customers Systems | 90 Resources for Disaster & Emergency Preparedness | 91 PowerMax Transfer Switch Views and Schematics | 93 | 94 Battery Wiring Diagrams | 95 Battery Condition and State of Charge Charts | 96 Order Form | 97 Backup Power? | 98 Energy Expectations | 99 Power Needs Worksheet | 100 Efficiency | 101 Wire Loss Chart | 102 Solar Insolation Map / Chart | 103 Utility Inter-tie | 104 About Us | 105 Statement of Policy & Warranty/Returns | Contact Us | MPPT Charge Controllers - FAQ | Battery Equalizer/DC Autotransformers - FAQ | Constant Voltage Pump Drivers - FAQ | Linear Current Boosters - FAQ | Information | 1 | 2 | 3 | 4 | 5 | 6 | 7 | NEWS-info links | Home Power Articles | R | P | A | B | C | D