Dc mini breaker confusion

[Mannfamilywoodworks]

Hello
I’m about to power on my system and start charging my new eg4 battery.
I wanted to triple check everything prior.
One thing is holding me up from turning everything on and I’m confused…
I’ve got this dc circuit breaker installed between my inverter and panels. My inputs are reading 200v with my multimeter with the breaker in the off position.
As soon as I switch the breaker to the on position it automatically switches to 1v?
Anyone know why?
I’m going to include pictures of the breaker and the specs.

 

[Mannfamilywoodworks]

This is a 63 amp breaker.
I’m realizing now that this is way bigger than I need.
I have 6 -235 watt panels hooked up in series.
They’re around 33v-37vx6
and 8amps if I remember correctly.

 

[John Frum]

You don't need over current protection for a single string.
It is pretty handy to have a means of disconnect which the breaker provides.
I don't know why you get 1 volt when you enable the breaker.
Is your string wired correctly?
What is the max voltage for the solar charge controller in your all-in-one?

 

[Mannfamilywoodworks]

You don't need over current protection for a single string.
It is pretty handy to have a means of disconnect which the breaker provides.
I don't know why you get 1 volt when you enable the breaker.
Is your string wired correctly?
What is the max voltage for the solar charge controller in your all-in-one?

I wanted it for ease of working on the system and safety.
Max voltage is 250v for solar charge controller.
I’m pretty sure my string is wired correctly.
I’m going to check for the fourth time to make sure I didn’t switch the - and + wires or something like that

 

[John Frum]

37 * 6 = 222 volts.
That is pretty darn close to the limit.
If it gets cold where you are you might smoke your controller.

 

[BradCagle]

This is a 63 amp breaker.
I’m realizing now that this is way bigger than I need.
I have 6 -235 watt panels hooked up in series.
They’re around 33v-37vx6
and 8amps if I remember correctly.

Have you ever shut that breaker off under full load?

I just wonder if it'll actually extinguish the arc. Lot of fake DC breakers around

 

[Mannfamilywoodworks]

Multimeter reading

 

[John Frum]

Multimeter reading

Does that say negative 203 volts?

 

[Mannfamilywoodworks]

Does that say negative 203 volts?

I’m not entirely sure my friend

 

[Mannfamilywoodworks]

37 * 6 = 222 volts.
That is pretty darn close to the limit.
If it gets cold where you are you might smoke your controller.

I’ll be switching to 3s-2p in a week or so to bring that down.
Honestly I might go do it now.
I’ve got all my mc4 connectors and the tool to do it.

 

[Hedges]

As soon as I switch the breaker to the on position it automatically switches to 1v?
Anyone know why?

Oh yeah I do!
It means you have reverse polarity.
Send a thank-you note to the inverter manufacturer for including a clamping diode.

 

[Mannfamilywoodworks]

Oh yeah I do!
It means you have reverse polarity.
Send a thank-you note to the inverter manufacturer for including a clamping diode.

I haven’t turned the inverter on yet thankfully.
What exactly should I do right now?
How do I make my polarity correct?

 

[Mannfamilywoodworks]

Oh yeah I do!
It means you have reverse polarity.
Send a thank-you note to the inverter manufacturer for including a clamping diode.

Can I do a continuity check? Or am I going to hurt myself lol

 

[Mannfamilywoodworks]

Positive side

Edithoto didn’t load

 

[Mannfamilywoodworks]

Negative side

 

[Mannfamilywoodworks]

Series connections

 

[Mannfamilywoodworks]

%100 what the issue was.
%100 user error.
I have no idea how I did that.
I color coded all the wiring.
I got shocked by the 200v when I switched the input onto the breaker and I’m still not fully awake.
I believe I must’ve mixed it up when I went from exterior to interior or the container.
I love electrical work but I’ve only been dabbling in this trade for less than 4 months.
I appreciate everyone’s input and I’m definitely going to be more careful in the future and always quadruple check my polarity.

 

[Hedges]

Ignore everything on the roof. Just put volt meter across terminals of inverter. See if polarity of that 1V matches polarity indicated on inverter.
You're not the first to do this.

 

[Mannfamilywoodworks]

I haven’t turned the inverter on yet thankfully.
What exactly should I do right now?
How do I make my polarity correct?

Care to explain what this clamping diode is exactly?

 

[Mannfamilywoodworks]

Ignore everything on the roof. Just put volt meter across terminals of inverter. See if polarity of that 1V matches polarity indicated on inverter.
You're not the first to do this.

I simply switched the wires leading into the breaker and it worked fine.