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gary asked a good question

jeff i'm installing a 125 watt flexible

solar panel those are the solar panels

that can actually

fit on a curve super lightweight they're

10th the weight of a rigid

i've got a loss on my boat we do lots

both rigid and flexible but certainly

flexible so he's got 175 watt flexible

solar panel

but now he's asking jeff i want to

install the breaker switch somewhere

between the panel and the controller

or elsewhere along the path to the

batteries

okay so let's have a look at what's

going on here

so where do you put this breaker right

because we know that we want to install

the fuse and

let's think about where are the fuses on

a solar

array so the fuses are right here

right right there or actually

right here so victron actually has fuses

right in their controllers that fuse is

between the controller and the solar

panel and that's

right here and then we also because

i've been repeating harping on this we

also install a fuse at the battery from

the battery

to the controller right here but those

are to protect the wire from

you know over amperage in case it ever

happens but what if you want to

disconnect your solar array

so what we've been reading hearing is

that

you should never disconnect a solar

panel while it's outputting

because the problem is you might have a

voltage spike and so what we do

and i'm not sure it's an overkill but

you know as an engineer i like to

take you know always with an abundance

of caution

so if i'm going to disconnect my solar

panels from my batteries what i end up

doing is i end up covering my solar

panels

or i do it in the dark right not in the

daytime when it's cloudy because they're

still outputting

i'll put a blanket on top of the solar

panels and then that way i know my solar

panel is actually

not outputting and if it's not

outputting then i know that when i

disconnect the solar panel

somewhere in the circuit i'm not going

to have a voltage spike and so what i

end up doing is i

cover the panel with some sort of

blanket covering that

stops the output of the solar panel and

then i would flick the breaker switch

i'd probably end up putting the breaker

switch probably in between the

controller and the batteries

uh you could i've seen it between solar

panels

and the controller but i would probably

not flick that switch unless i actually

made sure that the panel was actually

not outputting as a way to avoid a

voltage spike

so that's a really good question from

gary thanks for asking

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