I ask the client to ship me all the hardware, camera, routers, modem etc and set it up and datalog to ascertain precisely how much energy is required, and if there are any efficiencies to be gain ie DC direct vs Inverter. Many cameras, at least in the cold north here, also have small heaters in them to prevent fog or ice which can add to power load significantly so that needs to be considered. If I am testing in summer I'll put camera in the freezer and continue to monitor it's power consumption. As many have already echoed here, clients generally have little idea what is really needed. That's why they come to us for our expertise! If a client does not want to do this process, I generally pass on the job. From experience the client who is unwilling to do proper load analysis is the first to threaten legal when it doesn't work. Many times years later they come back with tail between legs for help and more willing to follow the process. Kevin Pegg EA Energy Alternatives Ltd. 37471 Hwy 16 E Telkwa, BC V0J 2X2 250-846-9888 Http://www.EnergyAlternatives.ca <http://www.energyalternatives.ca/>
-----Original Message----- From: [email protected] [mailto:[email protected]]On Behalf Of Jason Szumlanski Sent: January 20, 2014 12:17 PM To: RE-wrenches Subject: [RE-wrenches] Very small PV systems for surveillance or other"micro" loads What do you do for very small off-grid systems that people want for specific equipment? Do you have a "go-to" configuration, or do you size and design everything custom? For example, I frequently get, "I want to run cameras at a remote site and the total requirement is 100W, 24 hours a day." It's not economical to reinvent the wheel every time. Jason Szumlanski Fafco Solar
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