Electrickery for camping - Page 45




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  1. #881
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    Default Re: Electrickery for camping

    Quote Originally Posted by Fluffy View Post
    Itís not impossible that when the aux is isolated, there is a combination of events that could lead to the aux bat and starter bat appearing to be in series if you have a wiring problem.
    100%, in this case the battery was disconnected from the starter battery - Basically just a 12v battery with a female cig plug attached.

  2. #882
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    Default Re: Electrickery for camping

    Can wrong polarity cause a runaway motor?

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  4. #883
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    Default Re: Electrickery for camping

    Quote Originally Posted by Subok View Post
    Can wrong polarity cause a runaway motor?
    Really not sure, I will go check the polarity of the system again. I will also check it against the built in cig lighter in the cab.

  5. #884
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    Default Re: Electrickery for camping

    Quote Originally Posted by Subok View Post
    Can wrong polarity cause a runaway motor?
    Should the motor be reversed, speed may increase a little since less resistance is offered by the impeller. Not nearly enough to make it scream murder. You can demonstate this during a normal running session by just blocking off both inlet and outlet on the pump with your hands.
    Eggie.

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  6. #885
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    Default Re: Electrickery for camping

    Quote Originally Posted by Die SwartKat View Post
    I can't exactly remember why, but I read somewhere that it is dangerous to do this and that is a very bad idea to use ac breakers on dc currents.

    Read it on this forum. It was either Fluffy, Eggie or Chris that explained why.

    Rather don't go this route.
    It could very well be when you match the circuit breakers to the current to be used as fuses. As per one of my posts, the volt drop across the circuit breaker in these instances is substantial (more than 1V), which is why i don't used them for this application. Volt drop indicates internal resistance = heat.

    That is why I only use 50A and 65 circuit breakers as isolating switches which have no measurable volt drop with currents up to 15A, which is the max I'm using. Can't see a problem with this at all.

    The DC circuit breakers are bulky and also act very slowly as fuses, 2 reasons why I don't like them, apart from their high cost. Conventional blade fuses are better than both.


  7. #886
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    Default Re: Electrickery for camping

    Quote Originally Posted by mikeml View Post
    It could very well be when you match the circuit breakers to the current to be used as fuses. As per one of my posts, the volt drop across the circuit breaker in these instances is substantial (more than 1V), which is why i don't used them for this application. Volt drop indicates internal resistance = heat.

    That is why I only use 50A and 65 circuit breakers as isolating switches which have no measurable volt drop with currents up to 15A, which is the max I'm using. Can't see a problem with this at all.

    The DC circuit breakers are bulky and also act very slowly as fuses, 2 reasons why I don't like them, apart from their high cost. Conventional blade fuses are better than both.
    The function of a breaker (AC or DC) is to detect when too much current (amps) is flowing through the circuit, then disconnect the circuit from the main power source to protect the wiring from overheating. During the act of disconnecting, the internal contacts separate. As they pull apart from each other, an arc will form as the current jumps across the air gap. (You have experienced this on a smaller scale with a static electric shock.) If this arc continues to jump the air gap, the current will continue to flow through the circuit, defeating the purpose of the breaker. This arc must be extinguished. The AC and DC breakers extinguish this arc differently. This design difference is why AC and DC breakers are not interchangeable. The current will continue to flow, causing the circuit to heat up and burn.

    However in your case you have the circuits primarily fused. Thereby negating some if the risk.

    Caution is advised.

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  9. #887
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    Default Re: Electrickery for camping

    Quote Originally Posted by mikeml View Post
    Attachment 496411

    Just to give you and idea. My earth bar is a simple aluminium angle with a few 4mm bolts. I added more than I needed.

    I added high amperage AC circuit breakers inline to be able to switch circuits off individually without having to pull a fuse.
    Love this neat setup. How did you fix the ac breakers to the wooden surface because I cant see the fuse holder.I have a similar setup but not as neat.

  10. #888
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    Default Re: Electrickery for camping

    Quote Originally Posted by Mbu View Post
    Love this neat setup. How did you fix the ac breakers to the wooden surface because I cant see the fuse holder.I have a similar setup but not as neat.
    The circuit breakers are DIN rail mount. The DIN rail behind the circuit breakers is riveted to the wall.


  11. #889
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    Default Re: Electrickery for camping

    Found this really simple diagram / infographic that examples a 200w solar system really well.

    https://www.parkedinparadise.com/200-watt-solar-setup/

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  13. #890
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    Default Re: Electrickery for camping

    A quick question: I have a 150W solar panel connected to a Victron Bluesolar 75/15 MPPT charge controller connected to a 105Ah deep cycle battery. There is an inline ammeter/voltmeter between the Victron and battery. Wiring is suitable thickness and quite short.

    In full sun I'm only getting about 6.4A / 88W at 13.7V, why does the panel not produce even close to 150W?
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  14. #891
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    Default Re: Electrickery for camping

    Quote Originally Posted by pardus View Post
    A quick question: I have a 150W solar panel connected to a Victron Bluesolar 75/15 MPPT charge controller connected to a 105Ah deep cycle battery. There is an inline ammeter/voltmeter between the Victron and battery. Wiring is suitable thickness and quite short.

    In full sun I'm only getting about 6.4A / 88W at 13.7V, why does the panel not produce even close to 150W?
    It will produce what the load/battery consumes, limited by itís max.

    A voltage of 13.7V tells me your battery is almost fully charged and the Victron is in FLOAT mode.
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  16. #892
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    Default Re: Electrickery for camping

    Quote Originally Posted by pardus View Post
    A quick question: I have a 150W solar panel connected to a Victron Bluesolar 75/15 MPPT charge controller connected to a 105Ah deep cycle battery. There is an inline ammeter/voltmeter between the Victron and battery. Wiring is suitable thickness and quite short.

    In full sun I'm only getting about 6.4A / 88W at 13.7V, why does the panel not produce even close to 150W?
    Quote Originally Posted by Fluffy View Post
    It will produce what the load/battery consumes, limited by itís max.

    A voltage of 13.7V tells me your battery is almost fully charged and the Victron is in FLOAT mode.


    In relation to the question...what is the status of your LED's on the unit? The Yellow one.

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  18. #893
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    Default Re: Electrickery for camping

    That was the peak it reached, at 13.2V it was around 6A. For 150W panel I was expecting at least 10A but I've never seen even close to that.

    Yellow LED was flashing slow when I measured at 13.7V.
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  19. #894
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    Default Re: Electrickery for camping

    What is the brand of the panel?
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  20. #895
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    Default Re: Electrickery for camping

    Quote Originally Posted by Eggie View Post
    What is the brand of the panel?
    Solarworld
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  21. #896
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    Default Re: Electrickery for camping

    Sounds OK (was thinking maybe ECCO).

    It would be worthwhile to do a short circuit test on the panel. In good sunshine you should see approx 8,5A. If only 6,5A or thereabouts, you have a defective panel.
    Eggie.

    What this country needs more and more, are more unemployed politicians.
    - apology to Edward Langley.

  22. #897
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    Default Re: Electrickery for camping

    After all, assuming correct wiring an healthy panel, high amps will only be observed on a 'flat' battery. Discharge it to about 11.9V and try again?

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