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my sma Sunnyboy 7.0 has lost some production data when it's not connecting well with the router and also stays off a little longer than i want after a black out... but very few of them on this grid. utility tax is $31 like the meter fee here, but the system has paid itself off now after 7 plus...

I would say the SOK is a good one for this, the all-metal box should be good if on the shelf and not connected. Wire connects over ~3 ft can pick up that pulse wave and bring in a spike to anything, but i think the BMS might have a chance, it's not like a sensitive radio receiver on a long wire...

im switching some 48volt panels with one also, no problems so far. but i see some better ones for 36volt golf carts,

the mini split PV models are also appealing as a way to get some cool air with out busting my Netmetering 1.0 contract. If you can find some room on a wall to hang the inside unit and a installer.

IM using a big old relay for that in my setup, Maybe not the best one, but working so far. https://www.amazon.com/gp/product/B08F2G1J9D/

Has anyone ever noted any low outputs on the solar logging such as below. it seemed to match the nights that has little or no moon. that thin blue line between sundown and sunup disappears completely on the no moon night. we also get a little light from a street light across the street, perhaps...

Older APC ups's work pretty well as cheap short term AC, need to find one that can be started with out the AC cord plugged into the wall... the older ones mostly..., you can also grab a nice network and phone line protector from the parts inside.

I would use Anderson power pole connections for DC

i dont think the PCM SCC can give you any more current then the PV is giving it... all it can do is chop the voltage down to the battery requirement. but the mppt can more then double the current the PV has in my experience. also you can only get the charging amps the battery needs at the time ...

you can use a old style light bulb as a load for AC or DC , lights up about 1/2 at 50volts also.

earth ground is to protect you from shock when reaching to items in the system. the frame of panels, power box, outside of power tools, etc. a place for the static discharge to go with the lightning comes... something to trip a circuit breaker if your power tool shorts out inside.. the...

you should not be seeing 120 AC on the PV lines... that's going to be a problem at the combiner box. ( somebody skiped a bypass capacitor or something inside to save a buck ) you could be seeing some DC from the SCC towards the PV inputs , i think it squirts a little DC towards the panels every...

the sheet rock guys have a tool/lifter/stand on a pole that might be helpful for this

home insurance saw the roof mount and wanted to jake rates up to cover the new value...changed to new insurer

diodes prevent back flow,

would be better to have two strings feeding their own mppt inputs. in your weather patterns are the afternoons more likely to be sunny than the mornings? then better to have more on the west side. if you install is not what was in the contract or not what the sale guy said focus on this and ask...

I have done a little playing around feeding AC to dc supply in to the PV input, its hard to keep the mppt unit from trying to run at it's max power when doing this. so it's going to warm up pretty fast most of the time.

most of the DC controlling opto / solid state relays I saw today at most can only switch 10 amps of DC at 100v

the scc is this no name ? model... i got it from Bioenno , but think its just a generic everyone rebrands. the mppt switching seems to happen at about 60mhz and that is just outside of the radio frequencys most of us care about ( maybe a problem for TV channel 2 but tv-2 not used very much anymore )

Some guy was showing off his midnight solar dump unit in a video and was using a solid state relay to control it, is this the way to control the DC with out arcing a contact ??

yes Bud, good points on only being able to harvest and record charging if the battery was somewhat empty to start with... I got outside Sunday and added more tilt to the panels and now 'over-paneled' at mid day and need to rebalance for less at mid day. BTW noting that the Battery-float status...

I have been running the new ham radio room solar power system for about a month now and would like to compare production AMP-HOURS with others running a 30amp SCC charging 12v battery. i am comparing it to the home grid-tie system to gain information on the solar booster project, having data...

has anyone found a DC-rated thermostat replacement for the oil filed heater? Id like to run one on 40 volts.

your shut might be in the wrong place , it's only going to show charging , not discharging

maybe your confusing amps to the load output with amps to the battery charging....

as long as all the connectors are very clean....

#10 awg wire will get hot at 30Amps (x13volts) ( so will Anderson power pole connectors )... i up'ed to 8 gage and now no heat.

we use the DIN's at work , its fine for low current ( still a pain to put a wire into someplace you cant see most of the time ) crimp fare'al would help ( more tools ) but not so good for higher power levels.

think ahead on stuff , do you have a battery cable and connector ( and crimper ) that will fit the new buss bar stud... easy to get into an endless buying circle on this.... I am finding I need 3 bus-bars one for charging the battery from solar or AC and needs to be isolated from the loads when...

most of the din rail stuff is flimsy looking, and hard to work with.... i have one of these I'm going to try for a charging battery buss and also to combine the negative leads in the combiner box... it's a heavy metal and looks ideal ( the 125 model ) ! need some low cost 6 amp dc breakers for...

you need to get them from a trusted seller , you can test them on the cord to your battery charger for just about any cordless drill and listen on a AM radio...

i have the sunnyboy 7.0 , very low rfi... I'm using a 100amp line noise filter on the ac connection and $200 worth of ferrite choke cores on all the lines. i have cores up on the roof also , run the negative return wire along the same path as all the wires so your making a twisted pair , not a...

here is one way to do it cheap added some tilt to the mount, see detailed photo, it's a make-your-own shelf bracket from the hardware store... hose clamps to frame. Birds like to land on that little wood part in the circle , i hope to take many bird photo's here and bring up during planning...

maybe add some PVC or metal conduit to protect the wires from the weed eaters near the ground..

Hello PV'ers, I would like to add something to my ham room PV system that is PV=50v x 10amps and batery=12v x208ah SOK that can chart the battery charging on the 30amp x 12v solar charge controller output and give me a nice graph like the Sunnyboy-7 is doing on the house system... the...