The applied aberration amid a asperous sine beachcomber and a authentic sine wave

!±8± The applied aberration amid a asperous sine beachcomber and a authentic sine wave

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The applied aberration amid a asperous sine beachcomber and a authentic sine wave

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Wagan EL2201 Elite 400 Watt Pure Sine Wave Inverter

!±8±Wagan EL2201 Elite 400 Watt Pure Sine Wave Inverter

Brand : Wagan
Rate :
Price : $106.54
Post Date : Dec 20, 2011 18:26:53
Usually ships in 24 hours

Wagan Elite 400 Watt Pure Sine Inverter is perfect for recharging devices on the go and for people with mobile lifestyles. Provides 400 watt continuous power and 800 watt peak surge power. Features 1 AC outlet, a USB power port, overload, overheat and low battery protection plus a 12v DC plug to connect inside your vehicle. Sample appliances include: cell phone charger, digital camera, video games, camcorder, cordless drill, MP3 or CD stereo system, medium LCD TV, laptop and standard incandescent light bulb. Wagan tech elite pure sine inverters are ideal for sensitive electronics. Designed to be efficient, the pure sine technology allows appliances to recharge faster, save energy costs and extend the life of appliances. It also reduces electronic interference, and is perfect for operating sensitive electronics such as medical devices, audio and video equipment, computers, HDTVs. Appliances with dimmers, speed controls, and certain battery chargers require pure sine to operate. Compared to traditional inverters which output in modified sine wave, AC power in pure sine wave is more similar to commercial power. The electronic appliances run cleaner, cooler and quieter when running on pure sine power. Wagan pure sine inverters are especially designed to increase the efficiency and running time of electronic appliances and motors. Our inverters operate at less than 3 to 5 percent of total harmonic distortion on average and 90 percent efficiency across the line.

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Samlex SSW-350-12A Pure Sine Wave Inverter

!±8±Samlex SSW-350-12A Pure Sine Wave Inverter

Brand : Samlex
Rate :
Price : $0.00
Post Date : Dec 16, 2011 05:38:19
Usually ships in 2-3 business days

INPUT: DC Input Voltage Range 10.5 - 15.3 VDC (±0.3 VDC). DC input current (at rated output power and 12.5 v input) 33 A. DC input current at no load (at 12.5 v input) 0.5 A. OUTPUT: AC Output voltage and tolerance 115 VAC (±5 VAC). AC output frequency and tolerance 60 Hz (±1Hz). AC output wave form PURE SINE WAVE Continuous active output power (linear resistive load) 350 W. Maximum active surge power 700 W peak - EFFICIENCY 89%. PORTS: USB CHARGING PORT (+5 vdc, 500Ma). PROTECTION: LOW INPUT VOLTAGE WARNING ALARM, 11.0 VDC LOW INPUT VOLTAGE SHUTDOWN, 10.5 VDC HIGH INPUT VOLTAGE SHUTDOWN, 15.3 VDC OVERLOAD SHUTDOWN. COOLING (LOAD CONTROLLED FAN). CONNECTIONS: INPUT TERMINALS WITH THUMB SCREW (M4). OUTPUT 2 X NEMA5-15 NORTH AMERICAN RECEPTACLES. General Temperature Profile: AMBIENT TEMPERATURE 0°C to 40°C; 32°F to 104°F. STORAGE TEMPERATURE -30°C to 70°C; -26°F to 158°F. Dimensions, Inches (L x w x H) 7.87 x 6.10 x 2.24 Weight, Lb 1.5

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What Is Fish Tape And How Does It Work?

!±8± What Is Fish Tape And How Does It Work?

Introduction

Fish tape (also known as a draw wire or draw tape) is a tool used by electricians to route new wiring through walls and electrical conduit. Fish tape is a length of stiff wire with a hook at the end and is usually stored coiled on a plastic reel. It works because it is bendy enough to easily go around corners and curves in the pipe, but strong enough to be pushed through the pipe without folding on itself and capable of pulling other items back through the pipe without breaking.

How It Works

Fish tape is the only good way to run wire through insulation. It will help you push wire through conduits faster and easier. It's sturdy yet flexible enough to snake inside walls, and can be used to run wiring behind objects that are big, heavy and would be a pain to move. However, sometimes the bends are too sharp, or the conduit has a joint or connection where the fish tape gets stuck. If that is the case, tie the end of the cord or the fish tape to the loop formed and pull it back through the way it went in. Please note, this is usually a two-person job: One to pull the fish tape from the far end and another to help feed the wire through without kinking or tangling on the other end. It's also important to note that staggered connection points prevent bunching or hang-ups in tight bends, so be careful not to let that happen.

Conclusion

Typically, fish tape is supplied in lengths ranging from 25 to 200 feet. It's really the only viable way to run wire through insulation easily. It's sturdy enough for pulling cable through conduit, but the cable must be taped well to it. Most impressive is the fact that fish tape is small enough to fit in a small toolbox or even in a small kitchen drawer or desk drawer.

What Is Fish Tape And How Does It Work?

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Load Break Switch

!±8± Load Break Switch

In power applications, switches perform function to energize or unenergized an electric load. On the high end of the scale are load-break switches and disconnecting switches in power systems at the highest voltages (several hundred thousand volts).

Load-break switches are required to maintain the capability of interrupting the load current. The load break switch in a circuit with several hundred thousand volts, designed to carry a large amount of current without overheating the open position, having enough insulation to isolate the circuit in closed position, and equipped with arc interrupters to interrupt the load current.

Load break switches of air break are of versatile switch gear for transformer control & protection. They can also be used for Motor feeder in conjunction with Vacuum contactors. They are highly useful for Ring feeders for isolation of faulty section either manually or through remote control if fitted with motor operation. Load break switch in conjunction with HRC fuse can tackle high fault current and offer very good protection against dead short circuit capacity up to 40KA.The fault clearance and isolation through this combination will be achieved in a few milli seconds provided a proper selection of LBS and fuse is done. HRC fuses are manufactured with silver strips/silver coated Cu. Strips wires surrounded by granular quartz. When short-circuit occurs the metal element melts and the molten metal melts the surrounding quartz, making the combination an insulating material, called fulgarite. There will be a number of sections in the element which will create similar insulating media in quick succession and thus the arc will be extinguished in a matter of few milliseconds, say 5 to 8 milli-seconds, ie., less than 1/2 a cycle.

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Load Break Switch

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Replace an Attic Exhaust Fan

!±8± Replace an Attic Exhaust Fan

Most homes have at least one exhaust fan in the attic. Depending on the size and shape of the attic, the attic may have 2 or 3 fans. Since the attic is usually hot in the summer months - sometimes reaching as much as 130 degrees F - the attic fans will often have bearing failure. The bearings are usually of the sealed type and can not be lubricated. Most of the time it is cheaper to replace the fan than try to repair them. Some fans have a thermostat that can fail but you may not find the correct thermostat and it is still easier to just replace the complete fan.

The tools required to replace the exhaust fan are: flashlight, wire strippers, needle nose pliers, screw drivers and nut drivers.

To replace the attic fan, first verify that the power is turned off. You can turn the breaker off or if the breaker is not marked, using a multimeter, verify the voltage is off by shutting the breakers off one at a time and reading the voltage at the fan connections. ( They are usually connected with wire nuts that you can carefully remove to check the voltage. After the power is turned off and verified disconnect the wires from the fan. The wires may be physically attached to the exhaust fan by a clamp which can be loosened to pull the wire out of the fan. Most fan motors have 3 screws holding them to the housing. Remove the mounting screws and pull thefan out. By doing this you do not have to climb a ladder on outside to remove the exhaust fan. Then reinstall the fan with the mounting screws and reconnect the wires. Turn on voltage and verify that the exhaust fan is working and you are done.

Replace an Attic Exhaust Fan

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