Great work. I think that the boltless should be used when connecting the wires inside the circuit breaker, and not relying on the screw, so that there is no looseness in the future.
I have one of these protecting my Midnite Solar controller. Their products are excellent and I'd recommend them to anyone that is seriously considering solar. This device is very easy to install on their controllers.
That's a really good idea, surge suppression. It contains 3 Metal Oxide Varistors (MOVs), one between red and ground, one between black and ground, one between red and black. If any pair goes over 600v (ac or dc) the excess is shunted through the MOV to try to keep it down to 600v. If your black (negative) wire has an earth ground, they yes all surges will go to ground.
According to midnight solar these are required on PV panels going into a house. Definitely don't want any kind of surges finding their way to the electronics.
Curious why the spd is wired on the opposite side of the breaker from the pv incoming? Seems like the surge would trip the breaker and the excess power would never make it to the spd 🤔
I think I have mine wired the same way you do but I wasn't sure if I was right. I have it on the top of my breaker along with the pv feed to the breaker. I wasn't sure which side of the breaker it should go on
600 VDC is the max nominal voltage of the pv system, not as you suggested. “Clamping” doesn’t begin until 780VDC. 1800VDC is your average voltage limit…three times what you stated. I have 13 MNS SPD’s on my system.
Thank you for the clarification! I will mention that on my next install for the last solar array on the property... well for now. I have another 2kw system planned.
Is it code to tie that many ground wires together, with a nut? I would think you are hitting the number of wires where a ground bar is needed? Also, is it code to insert 2 wires into a single slot on that circuit breaker? (Some breakers say you can do it, others say no…) I would think you needed to pigtail it?
A ground bus bar has now been installed. Much better. As for connecting the spd to the same location as the inverter, it has done fine. But a separate bar would work well.
Great instructional video. One must also bear in mind matching the spd close to the max input of inverter. A 600v spd will not provide protection to inverter with much lower, max input voltage. 600v can still destroy an inverter with max 145v input.
@@LandtoHouse will be a big help because you can’t find big enough breakers for the solar. I’m running a 2 pole 125 amp for my EG4 6000ex and it’s right close to barely being enough
Copper bus bars are an off the shelf item for electrical contractors, paralleling up 2 breakers works until 1 pole fails then the 2 pole is left to carry 100% of the FLC. there are a few manufactures of 2 pole breakers up to 250 Amp 1000vdc. I use Beny , maybe consider sizing up your enclosures to suit the application, You need to use Glands on the DC single double insulated to avoid cable movement under high current fault conditions. Ferrules should be used for all flexible conductors to avoid strain from the terminal screws.
Come guys you all are close ,put the whole system indoor use two drums, one of which you turn into a Drum pump ,,^ iit must above the other drum which would have both the ram pump and generator above it,, way it should work,, Drum pump should pump the water from the lower drum to the ram pump to generator, having all the water falling back into the lower drum,,,. Or am I just crazy,,. Please fill me in with how it goes,,,.
![Midnite Solar Surge Protection Device SPD [ Full Install ]](/img/1.gif)
Great work. I think that the boltless should be used when connecting the wires inside the circuit breaker, and not relying on the screw, so that there is no looseness in the future.
I have one of these protecting my Midnite Solar controller. Their products are excellent and I'd recommend them to anyone that is seriously considering solar. This device is very easy to install on their controllers.
You are right! Install is very simple.
I highly recommend a thin rail one in this case simply because it would be easier to use
That's a really good idea, surge suppression. It contains 3 Metal Oxide Varistors (MOVs), one between red and ground, one between black and ground, one between red and black. If any pair goes over 600v (ac or dc) the excess is shunted through the MOV to try to keep it down to 600v. If your black (negative) wire has an earth ground, they yes all surges will go to ground.
According to midnight solar these are required on PV panels going into a house. Definitely don't want any kind of surges finding their way to the electronics.
Cool. Thanks for the video!
Curious why the spd is wired on the opposite side of the breaker from the pv incoming? Seems like the surge would trip the breaker and the excess power would never make it to the spd 🤔
I think I have mine wired the same way you do but I wasn't sure if I was right. I have it on the top of my breaker along with the pv feed to the breaker. I wasn't sure which side of the breaker it should go on
can them tiny wires from the spd really cope with a lightning strike. ????
600 VDC is the max nominal voltage of the pv system, not as you suggested. “Clamping” doesn’t begin until 780VDC. 1800VDC is your average voltage limit…three times what you stated. I have 13 MNS SPD’s on my system.
Thank you for the clarification! I will mention that on my next install for the last solar array on the property... well for now. I have another 2kw system planned.
Is it code to tie that many ground wires together, with a nut?
I would think you are hitting the number of wires where a ground bar is needed?
Also, is it code to insert 2 wires into a single slot on that circuit breaker?
(Some breakers say you can do it, others say no…)
I would think you needed to pigtail it?
A ground bus bar has now been installed. Much better.
As for connecting the spd to the same location as the inverter, it has done fine. But a separate bar would work well.
Great instructional video. One must also bear in mind matching the spd close to the max input of inverter. A 600v spd will not provide protection to inverter with much lower, max input voltage. 600v can still destroy an inverter with max 145v input.
Same goes for the ac side, a 1000v spd will not protect equipment rated for 110v or 220v.
Whole Home Battery? Did I miss a review? What is it?
Its coming up soon! Just sitting down to edit this video. Vestwoods 14.336kwh battery with 8kw inverter.
Looking forward to the details!
Great work
Will this protect against an EMP event?
No this is simply for high voltage surge from lightning strike or other surge. not for EMP.
What is the difference between the 300 and 600
The clamp voltage. Because my solar is 450v the 300v would not work.
I'm confused on where you put the SPD, is that your PV disconnect?
Yes on the pv disconnect breaker.
@Land to House you have a red and black? Sorry for the questions but I'm confused and trying to also install one
@@todamnbad i have a double pole single throw breaker that cuts both the red and black wires on the PV. This allows me to install the spd here.
@Land to House I was thinking your pv wires were black, so your pv in goes to the top of the breaker and the bottom is the output to the MPPT?
The red and black pv wire comes in to the bottom of the breaker and leaves the top towards the mppt.
You installed an SPD and then coupled the earth wires together with a wire nut lol
I would have used the brass screw type connector ones.
Where did you get that breaker jumper ?
I’ve been looking to do the same thing
I am developing them. Working on the CNC to make this a product. Not ready yet but hopefully soon.
@@LandtoHouse will be a big help because you can’t find big enough breakers for the solar. I’m running a 2 pole 125 amp for my EG4 6000ex and it’s right close to barely being enough
Yes! I thought the same. Otherwise how do you connect multiple breakers! My system needs 500v so had to use the double breaker as well.
Copper bus bars are an off the shelf item for electrical contractors, paralleling up 2 breakers works until 1 pole fails then the 2 pole is left to carry 100% of the FLC. there are a few manufactures of 2 pole breakers up to 250 Amp 1000vdc. I use Beny , maybe consider sizing up your enclosures to suit the application, You need to use Glands on the DC single double insulated to avoid cable movement under high current fault conditions. Ferrules should be used for all flexible conductors to avoid strain from the terminal screws.
What is the price for it
This one on amazon was $90.
Come guys you all are close ,put the whole system indoor use two drums, one of which you turn into a Drum pump ,,^ iit must above the other drum which would have both the ram pump and generator above it,, way it should work,, Drum pump should pump the water from the lower drum to the ram pump to generator, having all the water falling back into the lower drum,,,. Or am I just crazy,,. Please fill me in with how it goes,,,.
The cables are too weak to use for surge-protector.