Question about Sun (PEX75030) 15-Watt Power Supply

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Pls i need an answer

Pls i want to know the amount of solar n panels to be used for 1kw solar system

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Check the attached documents for your reference & perusal.....

Posted on Sep 18, 2014

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Here's a concrete example:

Evergreen Solar makes a 200 watt panel (model ES-A-200). In real world conditions these panels should kick out 150 watts each. So to get 1,000 watts, you would need no fewer than 7 panels to do the job. Currently, this panel goes for about $1,000 each so your lookng at $7,000 just for the panels. You will also need a charge controller, inverter, batteries (if desired), mounting hardware, etc.

Posted on Jan 25, 2009

  • Zac Jun 19, 2014

    Not sure what you intend to do with the electricity from the panels but here is how you can get 1,000 watts...



    Northern Arizona Wind and Sun sells Kyocera 250 watt panels for $257, which is about $1 per watt which is close to the current market price for the larger sized panels. Four of these panels will get you 1,000 watts of power for about $1,100 (not sure what shipping is).



    If you are looking at a stand alone power system, you will need a charge controller (preferably a MPPT controller), batteries (deep cycle, flooded lead acid batteries) and presumably an inverter to make 120Vac electricity.



    If you want to sell electrictiy to the grid, you will need a grid-tie inverter.



    Or if you want grid tie AND backup power, then you will need grid-tie inverter with charger, solar charge controller, batteries, etc.

  • Zac Jun 19, 2014

    Not sure what you intend to do with the electricity from the panels but here is how you can get 1,000 watts...



    Northern Arizona Wind and Sun sells Kyocera 250 watt panels for $257, which is about $1 per watt which is close to the current market price for the larger sized panels. Four of these panels will get you 1,000 watts of power for about $1,100 (not sure what shipping is).



    If you are looking at a stand alone power system, you will need a charge controller (preferably a MPPT controller), batteries (deep cycle, flooded lead acid batteries) and presumably an inverter to make 120Vac electricity.



    If you want to sell electrictiy to the grid, you will need a grid-tie inverter.



    Or if you want grid tie AND backup power, then you will need grid-tie inverter with charger, solar charge controller, batteries, etc.

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Solar panels come in different ranges of wattages.Add up the wattage of different solar panels you get e.g. Ten 100W solar panels will give you a 1Kw solar system.

Posted on Jul 16, 2008

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How To Build Up A Small Home Solar Power System?


Solar power operates on a very simple concept known as the photovoltaic effect. The sun's rays supply photon energy. When photon energy is contained with electrons in orbit, it knocks those electrons from their orbit and creates electricity. This electricity can then be sent to either an electrical device or battery to be stored or used.
Solar power is an excellent energy source due to the fact that it is completely renewable, and also has a little-to-no carbon footprint in most applications. Power grids may fail, and batteries may run out, but solar power will always be there for you as long as we have the sun - which isn't going away anytime soon.
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Interesting question. We have solar too but never got around to learning how to read the meter itself as I usually look at the on line (phone app) for the solar production. Reading the meter can give you the actual amount you will be charged if you have the 1st of the month reading and the end of the month reading. With a bit of math you can subtract the amount your panels produced to the amount you used. That's the basics used on your electric bill. Though they do add in the tax, fuel fee, and Admin charge. The fees are usually only charge if you used power in excess of what you produced. But they will always charge the Admin service fee which is about $18 in Hawaii. I've heard similar (under $20) charges in other states.
"888888" is a test mode to check display
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* Yes, a bit confusing and requires you to gather up your old electric bills to get all the numbers. I generally look on the bill for the daily K-watt usage and compare that to the daily usage. We use 42 Kilo watts per day in our home. If the solar produces 42 K watts today then I have an idea that we produced enough to cover today's power usage. Rainy days will produce less be may be compensated by several sunny days. The summer is always best as the sun shines all the time. No worries. Usually the first year after a new solar installation. The customer will incur some months with a higher bill (but still lower than a non-solar billing). But as the year progresses into the summer (or sunny months) your bills will lower usually to the Admin charge level. It will be higher if you have an under power demand system (or under sized system, BELOW what your normal usage is.)
Next year you will probably forget about checking and reading as the bill will settle.
The following link will help read the meter:
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Aloha, ukeboy57

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Do You save electricity if you. Say quick wash or Fuzzy..


no
you use same the amount of power for the wash selection because the motor uses the same amount of power
you may save power by selecting shorter wash times because the motor is not running for as long
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a 1kw motor uses 1kw of power per hour but if used for half an hour still uses the 1 kw of power but only for a 1/2 hour so the cost of the power used will be less

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Will my 18watt solar panel charge a car battery and how fast?


If you hook it up correctly and the Voltages match... yes.

As for how long... THAT depends on a number of Factors... How much sun, What quality is the Solar Panel, Placement of the Panel.. the goes on and on... But you CAN charge a Battery...I charged a Battery for quite some time using a Large Solar array.... We were Camping an using the Battery for Lights Radio and Fridges.... So it CAN be done

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1 Answer

Would like to know more about the solar panels discussed and shown on 2nd October 2014 at 05:15+


Solar panels are typically rated at .3 volts per cell. These cells are connected in series until they add up to 12 volts,24 volts or 36 volts depending on the solar system. The more cells you have the higher the charge rate of the batteries connected to the system. The DC voltage from the cells are used to charge the batteries then the voltage from the batteries is used to drive a DC to AC- convertor which is the power used by your home. The more cells connected the quicker it will charge the batteries and the more batteries connected the more power the solar system can provide.

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You are correct they do lose the output over time. .Not knowing the specific type or brand of the panels the following is a general over all reply.

The manufacturer will give the specific amounts the panels will lose their efficiency. Newer panels I believe will 2-4% the first year then something like 1% per year. Newer panels usually have a life of 20 years. I am not sure about the smaller panels you have but I would guess they may be a little faster especially if your putting them up and down constaly.

Also make sure you clean them, that will make a very substantial difference especially since they are smaller in size and I am sure you know that shade on ANY PART of the panel may eliminate total sections of the panel producing power, depending on the type of [panels you have. Also check for scratches where you might be able to light through the panels as that may affect the output.

I would suggest a google search for manufacturer and model # and then review the spec sheets for the item. That is were you would find the information.If you don't and the company is still in business send them an email and they will let you know.

Good luck.

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Solar connections for 12vdc houseboat system


Hi,

Based on your post/description, I would suggest that:
1. There is no need to install a diode from the boat motor alternator since most current design used electronic regulators with built-in diodes. The output of the alternator therefore could go straight to the battery or a switch (*selecting battery 1 or 2);
2. It would probably be safer that you would install a diode after a portable generator since some design do not need/use internal rectification but are connected straight to the windings/coil;
3. There is no need to install diode after each solar panel.

To my understanding the Plasmatronics have built-in in-line diodes to its inputs/outputs (unless otherwise required such as with the "Catch Diode protection" across the load). Additionally, unlike in some other system, a PL-20 would require that the negatives not be tied to a common ground. The PL-20 is relatively a straight forward connection (it's the programming that is a challenge).

Hope this be of help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards.

Tight lines.

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