Re: [RE-wrenches] C-40 question

-Original Message- From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Larry Crutcher, Starlight Solar Power Systems Sent: Thursday, October 25, 2012 11:22 AM To: RE-wrenches Subject: Re: [RE-wrenches] C-40 question Well Steve, Let

Re: [RE-wrenches] C-40 question; how PV controllers work

y, October 25, 2012 5:50 AM To: RE-wrenches Subject: Re: [RE-wrenches] C-40 question It does "take". Your charge controller controls the load and current, hence the name "controller". It is not a fixed resistance. If you program a charge rate limit, the controller will control

Re: [RE-wrenches] C-40 question

Well Steve, Let me wipe the egg off my faceIt is right there on page 59 of Xantrex manual, version 975-0004-01-02 Rev D. "If the current exceeds 85 amps, the transistor switches are opened..." Upon further reading, it appears that all three controllers can handle 85 amps intermittently. I'm

Re: [RE-wrenches] C-40 question

re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Allan Sindelar Sent: Wednesday, October 24, 2012 4:45 PM To: RE-wrenches Subject: [RE-wrenches] C-40 question Wrenches, Sometimes I encounter a situation that I have never encountered, simply b

Re: [RE-wrenches] C-40 question

oun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Chris Mason Sent: Thursday, October 25, 2012 5:50 AM To: RE-wrenches Subject: Re: [RE-wrenches] C-40 question It does "take". Your charge controller controls the load and current, hence the name "

Re: [RE-wrenches] C-40 question

It does "take". Your charge controller controls the load and current, hence the name "controller". It is not a fixed resistance. If you program a charge rate limit, the controller will control the current flow to limit the charge rate, hence it is "taking" a certain current up to the limit of the s

Re: [RE-wrenches] C-40 question

Huh? The equipment does not "take" or "draw" anything. The electrical pressure of the source, called voltage, forces electrons through the load. Electrons per unit time are called current. The current is only limited by the resistance of the load, in accord with Ohms Law. The resistance of the load

Re: [RE-wrenches] C-40 question

Because it is not 80 amps current flowing, it is a capacity of 80 amps. Think of it this way. Your toaster is plugged into an outlet that is powered by the grid. The grid has infinite capacity. Why doesn't your toaster explode? Because it takes the current it needs. Now, increase the voltage and yo

Re: [RE-wrenches] C-40 question

: [RE-wrenches] C-40 question   Allan,    12 100 watt modules are more likely to be about 60-70 amps. With all the losses involved in a poorly designed DIY system (like most of them), I would

Re: [RE-wrenches] C-40 question

-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Larry Crutcher, Starlight Solar Power Systems Sent: Wednesday, October 24, 2012 3:11 PM To: al...@positiveenergysolar.com; RE-wrenches Subject: Re: [RE-wrenches] C-40 question Allan, 12 100 watt modules are more likely

Re: [RE-wrenches] C-40 question

Allan, 12 100 watt modules are more likely to be about 60-70 amps. With all the losses involved in a poorly designed DIY system (like most of them), I would expect to see more than 25% power loss. Perhaps that is why the controller lasted. There is no current limiter in the C series controller

[RE-wrenches] C-40 question

Wrenches, Sometimes I encounter a situation that I have never encountered, simply because it's so far beyond normal limits that I would never try it to find out what would happen. Here's one. A did-it-myself customer called me for batteries for his system. I lear