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Olddawgsrule View Drop Down
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Direct Link To This Post Topic: My Mods on Lily
    Posted: 19 Apr 2018 at 3:30pm
I've been debating quite a bit but found this to be my first real mod.

With any luck it goes in this weekend. I choose this one over the shunt style mainly because of my experience with shunt style on my garage solar. The shunt has been the one item I have to replace a couple times now and it 'needs' to be spliced in. Never did like that. Even though there is still a direct connect, cutting the wire always bothered me. This one I think is a ferrite disk. 

I'll let you know how accurate I find it. Cumulative amperage usage is the biggest thing I want on the DC side of things. 


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Direct Link To This Post Posted: 19 Apr 2018 at 5:07pm
Even though that has "DC" in the description, based on the fact that it is using a coil to sense, I think that is an AC-only sensor.
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Direct Link To This Post Posted: 19 Apr 2018 at 5:21pm
Only takes a diode to change that. No idea what circuit is.
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Direct Link To This Post Posted: 20 Apr 2018 at 10:30am
Intersting, it probably has to use a simple half or full wave bridge diodes to rectify it to DC. I'm kind of scratching my head on this because the coil senses AC to rectify it to DC so where would you place this sensor coil? On your shore power input line if so I don't see a benefit but maybe I'm probably missing something here, yes?
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Direct Link To This Post Posted: 20 Apr 2018 at 2:40pm
Well, we're about to find out. Should be here today, but if not by the time I get back tomorrow.

I'm going to test it on my solar setup so I can compare readings against what I already have in place.


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Direct Link To This Post Posted: 20 Apr 2018 at 4:20pm
Originally posted by GlueGuy

Even though that has "DC" in the description, based on the fact that it is using a coil to sens, I think that is an AC-only sensor.

If it's Iron core it should do DC. Question really is if it's true RMS (which I doubt for the dollar). Really doubt it's Hall.. Way to little money for that.

Now if it's ferrite core.. measurements should be pretty close even if non-RMS and adjusted.

All will be seen over the weekend and answered. No reason for any of you to spend the dollar till I know it works and how well.


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Direct Link To This Post Posted: 20 Apr 2018 at 6:46pm
Originally posted by Olddawgsrule

Originally posted by GlueGuy

Even though that has "DC" in the description, based on the fact that it is using a coil to sens, I think that is an AC-only sensor.

If it's Iron core it should do DC. Question really is if it's true RMS (which I doubt for the dollar). Really doubt it's Hall.. Way to little money for that.

Now if it's ferrite core.. measurements should be pretty close even if non-RMS and adjusted.

All will be seen over the weekend and answered. No reason for any of you to spend the dollar till I know it works and how well.
The core doesn't matter. A coil (regardless of core material) can "sense" an expanding/collapsing magnetic field. A DC current won't be changing, so cannot be sensed with a coil. So this would tell you the current on an AC line, but not a DC line.

If you want to sense the current in a DC line, you need something like a hall effect sensor. This is what is used in AC/DC clamp-on meters.
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Direct Link To This Post Posted: 22 Apr 2018 at 6:41am
Ended up hooking in the 'shunt' unit. This is test location, final resting spot should be inside Lily.

Ghost draw.




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Direct Link To This Post Posted: 22 Apr 2018 at 6:44am
Here's with Frig draw.

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Direct Link To This Post Posted: 22 Apr 2018 at 7:03am
Originally posted by Olddawgsrule

Ended up hooking in the 'shunt' unit. This is test location, final resting spot should be inside Lily.

Ghost draw.




Please look at the wiring. I believe the smaller cable from the unit should be on the other side of the shunt. You folks are saying that's the charge line from the solar. I noticed it after I hooked it up. I have not yet hooked up 'shore power' in case I'm correct on this.

If I don't hear back (before I head out there), My plan is to swap it over to the battery terminal before I hook into 'shore power'.

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