Technical

Have a specific technical question? Looking for some specific advice from others in the RE community? Ask it here!

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Subject Started by Replies

2 panels of different voltages


I know this topic has been discussed here before, but I've few questions. I have 1 panel installed, it's abou...
 Will Williams 0

solar heating for pool in Italy and associated UV cleaning


Being a novice in alternative energy, I am seeking advice as to what are the options for solar heating and UV cleaning for a pla...
 John Murray 0

PWM Inverters


Ok, here's where I need refreshing. Are PWM sine wave output inverters true/pure sine wave? or are these the "near sin...
 Craig Flanders 0

Capacitor across DC input of inverter ???


I saw a picture of an inverter for sale on e-bay. There was a large capacitor installed that was wired across the plu and minus ...
 Arcandspark 0

Dump load for wind generator


I am just about finished with a proto type dump load I made using peltier thermocouple devices. These little items are just what...
 Arcandspark 0

Q: PL-PLT "Plastic Pelton Wheel "


Hello, We need information about the maximum r.p.m and the maximum power that can be supplied by the Plastic Pelton Wheel &q...
 Ahmad Zbeeb 0

Which pump works best ???


A friend wants to install a 600 foot deep well and use an AC or DC submerged pump. I have not installed this type of pump and ha...
 Arcandspark 0

Pump size ???


My friend is building a 2000 sq ft home off grid. I had installed the alternative energy system he is currently using to provide...
 Arcandspark 0

Charging batteries in parallel w/portable charger


Could someone tell me if using a portable 12V "smart" charger to charge a bank of 12V batteries connected in parallel ...
 Dan McAfee 0

Do charge controller & inverter's builtin charger "conflict"?


I'm designing a small (600W using 3 200W panels in series) off-grid system. Current plan is the Apollo T80 charge ...
 Michael McCandless 0

Need wind turbine


I need to buy wind turbine to install in thailand Cut in speed 2.5 m/sReted speed 4-6 m/s .Please advice me.
wajanawout tiyakote 0

dual charging system and different battery sizes


Just bought 110W solar panel kit for camper with a dedicated 12VDC system run from a type 24 battery that is charged through an ...
 Charles Raney 0

Ballast system for flat roof


I will be installing a fairly large array on a flat membrane roof.  Does anyone have info on ballast systems, how much weig...
 Sam Avery 0

PV/battery powered el sid question


What combination of PV panel, battery, and controller could be effectively used with an El Sid 10W 12V circulating pump? I live ...
 Kerry Lipp 0

XW inverter/charger network


The XW manual shows a network connection.  Is this just for the XW remote control station or is this by some chance an info...
 David A 0

what watt panel should i use


Hi im verry new to the solar world so bare with me.  I have instaled a off-grid inverter and generator system with a batery...
 Sean Fleming 0

Charging a larger Lithium Ion battery with solar


Hello, I’m seeking a solution for charging a 12 volt lithium ion battery while traveling for several weeks at a time....
 Mark Stivak 0

No current from CX-20


Hi Every body, I have a CX-20, a solar panel (20W  I think, @full sunshine, Vcc = 18,7V and Isc = 1.43Amp), the ba...
 Peter Rockman 0

DC Source Center


Hi everyone, I have at the moment a 5kW wind turbine and around 1kW PV arrays and I want to connect them in order to ge...
 Joel Salazar 0

Effect of desulfator on equipment


I am installing a 30w panel and desulphator/charge controller on my boat. If the power is on to my instruments, equipme...
 Randy Sermons 0
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