Search found 241 matches

by Megunticook
Sat Sep 14, 2019 12:21 pm
Forum: OutBack
Topic: surge protection
Replies: 17
Views: 7547

Re: surge protection

Is there an EGC that runs with the output wires from your combiner box down to the disconnect switch? And then an EGC from the disconnect switch down to your system's load center?

And you're grid-tied, right? So you have a ground rod at the AC service panel that's bonded to neutral?
by Megunticook
Sat Sep 14, 2019 9:14 am
Forum: OutBack
Topic: surge protection
Replies: 17
Views: 7547

Re: surge protection

I wanted to revive this thread because I keep coming across what appear to be well-informed information online suggesting that grounding a PV array directly to a ground rod as supplemental lightning protection is a valid and safe strategy. For example, these diagrams are from a 2012 report by the So...
by Megunticook
Wed Sep 11, 2019 5:38 am
Forum: OutBack
Topic: EV charging
Replies: 8
Views: 3647

Re: EV charging

Agreed, it would be dumb to drain the battery bank in to the car (unless there was some emergency). On a sunny day in the winter the array will generate well over 6kWh, in the right conditions over 7. So I suppose I could charge for maybe an hour or so if really necessary. Let's say the grid was dow...
by Megunticook
Tue Sep 10, 2019 7:56 pm
Forum: OutBack
Topic: EV charging
Replies: 8
Views: 3647

EV charging

Last week I picked up a new Electric Vehicle (Nissan Leaf) that came with a stock charger than can either use 120/12A (Level 1) or 240/30A (Level 2). I have a Radian 8048A in a grid-tie arrangement with a battery backup. For now I've wired up a dedicated 240V circuit which is not connected to the ba...
by Megunticook
Wed Sep 04, 2019 10:09 am
Forum: Backup Applications
Topic: sulfation?
Replies: 28
Views: 13652

Re: sulfation?

I wonder if my battery construction ignorance is in play here. Is the gray stuff in between supposed to be there to separate plates? Thing is, it's not consistent as I look in different cells...that's why I thought it was an accumulation of some sort.
by Megunticook
Wed Sep 04, 2019 8:59 am
Forum: Backup Applications
Topic: sulfation?
Replies: 28
Views: 13652

Re: sulfation?

What I'm seeing isn't so much specks as a sort of light-gray colored material sandwiched between the plates...
by Megunticook
Wed Sep 04, 2019 8:39 am
Forum: Backup Applications
Topic: sulfation?
Replies: 28
Views: 13652

Re: sulfation?

Here's a photo--not great but the best I could do:

Image

Is that gray stuff sulfation?
by Megunticook
Wed Sep 04, 2019 7:02 am
Forum: Backup Applications
Topic: sulfation?
Replies: 28
Views: 13652

Re: sulfation?

I think your once-a-week prescription is probably about right for these batteries.

After sunset I'll drop the grid and see if I can pull them down to 70% SOC by morning, then charge them in the morning.
by Megunticook
Wed Sep 04, 2019 6:41 am
Forum: Backup Applications
Topic: sulfation?
Replies: 28
Views: 13652

Re: sulfation?

Thanks. I don't believe there's chronic undercharging happening, based on my s.g. readings, unless I'm missing something. On the other hand, they do spend 95% of their time in float mode, with a daily absorption of about an hour each morning. Agreed that maybe these particular batteries aren't ideal...
by Megunticook
Wed Sep 04, 2019 4:23 am
Forum: Backup Applications
Topic: sulfation?
Replies: 28
Views: 13652

sulfation?

During my routine battery check yesterday I noticed a light gray material in between some of the plates. Is this sulfation? S.G. ranged from 1.280-1.295 (that's a bit higher than normal, usually more like 1.275-1.290). The electrolyte level was a bit down (roughly 1" from the bottom of the filler tu...
by Megunticook
Thu Aug 22, 2019 12:21 am
Forum: RADIAN Series
Topic: can the 8048A handle a conventional well pump?
Replies: 11
Views: 7013

Re: can the 8048A handle a conventional well pump?

It's been a 22 months since I first posed the question at the top of this thread, and I've since installed an 8048A that's been running for over a year and a half. No issues at all with the well pump. But have my eye on a low-amperage pump to replace it with...just need to cough up the $2K! I'll che...
by Megunticook
Thu Aug 15, 2019 6:36 am
Forum: Website & Forum
Topic: forum security
Replies: 1
Views: 2330

forum security

Haven't been on the forum for a few weeks, just logged in and noticed the message at the top apologizing for the recent outage and platform updates. I'm all for keeping things updated, so I commend you for doing this. I should add, though, that the forum (and the whole Outback site for that matter) ...
by Megunticook
Wed Jun 12, 2019 3:11 pm
Forum: OutBack
Topic: looking for good hydrometer and voltmeter recommendations
Replies: 8
Views: 4684

Re: looking for good hydrometer and voltmeter recommendation

Thanks for the recommendations everyone. I ended up ordering a Fluke 115 for $150. Hopefully this will last a long while. Going to stick with the old fashioned hydrometer for the time being, but will upgrade eventually. Seems like I've been plagued with a thousand little household repairs/expenses l...
by Megunticook
Tue Jun 11, 2019 4:23 am
Forum: Grid Tie Applications
Topic: Normal output in hot days?
Replies: 19
Views: 7674

Re: Normal output in hot days?

Ambient temp here today was about 112. Holy heatwave, Batman. That sounds downright dangerous. Where are you located? This is going to become more and more of an issue as climate change accelerates. At this point where I am (44 degrees L) we get a few summer stretches in the 90s but nothing too sev...
by Megunticook
Wed May 29, 2019 3:47 am
Forum: FLEXmax Charge Controllers
Topic: System settings ,Installer missing
Replies: 8
Views: 4982

Re: System settings ,Installer missing

First thing I would do is check your battery manufacturer's recommended specs. and compare your system parameters against those (see http://www.eastpennmanufacturing.com/wp ... -0919B.pdf).

Looks like 60-61.2 is their recommended EQ voltage.
by Megunticook
Mon May 13, 2019 7:58 am
Forum: Mate3 / Mate3s
Topic: Mate3s 1.4.2 Firmware Released
Replies: 9
Views: 6112

Re: Mate3s 1.4.2 Firmware Released

It took me several tries before the Mate read the card. Been using the same card since I acquired the unit (fall 2017) and never had the issue before. Did you try removing and then reinserting the card into the mate? I generally reformat the card to wipe it clean before adding just the new firmware ...
by Megunticook
Thu May 09, 2019 3:30 pm
Forum: OutBack
Topic: looking for good hydrometer and voltmeter recommendations
Replies: 8
Views: 4684

Re: looking for good hydrometer and voltmeter recommendation

Thanks for the recommendations everyone. Time to do a little shopping now. Not sure I'll spend $400 on a meter at this point but I'll have a look at all those products and make a decision.
by Megunticook
Fri May 03, 2019 6:08 am
Forum: OutBack
Topic: looking for good hydrometer and voltmeter recommendations
Replies: 8
Views: 4684

looking for good hydrometer and voltmeter recommendations

My voltmeter bought the farm the other day (not exactly sure what happened but it's acting loco), and the hydrometer I have came with a plastic cylinder that has a crack/leak. Thinking I'll replace both of those.

Can anyone recommend any specific products that they've been happy with?

Thanks.
by Megunticook
Fri May 03, 2019 6:03 am
Forum: Off Grid Applications
Topic: Những điều cần lưu ý liên quan đến máy xay cà phê
Replies: 5
Views: 3033

Re: Trojan battery morning reading

My battery bank usually reads 12.5 when I wake up, though it occasionally has registered 12.4, and the charge controllers make it into the float category after two hours of absorb minutes about twice a week. Does this sound right for the PNW and will it keep my new Trojan L16H-AC batteries happy? I...
by Megunticook
Mon Apr 29, 2019 3:37 pm
Forum: Mate3 / Mate3s
Topic: Mate3s 1.4.2 Firmware Released
Replies: 9
Views: 6112

Re: Mate3s 1.4.2 Firmware Released

Upgraded last night (unplugged ethernet cable first). Oddly, the first three attempts it read "SD Card Not Found" but on the fourth try it performed the upgrade. The ethernet processor portion of the upgrade took a long time--maybe a full minute. It rebooted, I plugged the ethernet cable back in, an...
by Megunticook
Wed Apr 24, 2019 5:34 am
Forum: OutBack
Topic: Not good.
Replies: 45
Views: 15155

Re: Not good.

I installed my Radian system myself, too, so I'm all for DIY. But first I studied all the Outback manuals and the relevant NEC rules thoroughly, read some good books and articles, and asked questions here on the forum or with Outback Tech. before actually doing the installation. And when I was all d...
by Megunticook
Sat Apr 20, 2019 6:08 am
Forum: Flex Power One
Topic: Flex Power 1 Db level and heat
Replies: 3
Views: 3370

Re: Flex Power 1 Db level and heat

I have a FlexPower Radian, so somewhat larger system, but in our case we decided to mount it in a nearby outbuilding along with the batteries and I'm very glad we did. That level of noise in the house would annoy me--the FM80 fans are especially loud. As for heat, I wouldn't say it gets super hot bu...
by Megunticook
Wed Apr 10, 2019 4:02 pm
Forum: FLEXnet DC
Topic: Stuck in absorb
Replies: 6
Views: 4158

Re: Stuck in absorb

Your inverter has its own charging parameters for using the grid to charge the batteries, right? Even though you probably have that disabled or turned off, check what the absorb time is set to there. I have a different system than you (MATE3s and Radian), but I've had a couple weird situations I was...
by Megunticook
Wed Apr 10, 2019 11:40 am
Forum: Grid Tie Applications
Topic: Grid Sell and Electric Meter
Replies: 9
Views: 5444

Re: Grid Sell and Electric Meter

Do you need a special meter in order to "sell back" to the grid? My POCO, Central Maine Power, replaced my analog meter with a pair of analog meters--one "in" and one "out." When CMP pushed the smart meters on all their customers I opted out, which is why we got the double analog meters. From what ...
by Megunticook
Thu Mar 07, 2019 4:18 am
Forum: Flex Power One
Topic: Array disconnect wiring
Replies: 1
Views: 2754

Re: Array disconnect wiring

Some circuit breakers are not designed to be backfed, so I would connect the terminal marked "line" to the combiner box.