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Old 05-12-2012, 08:59 PM
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When I first started designing the panel, what crossed my mind was how disasterous would it be if something blows a GFCI ? How many hardware pieces would go down all at once ?
I decided to give every piece that contacts water it's own
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Old 05-12-2012, 09:11 PM
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Originally Posted by gregzz4 View Post
When I first started designing the panel, what crossed my mind was how disasterous would it be if something blows a GFCI ? How many hardware pieces would go down all at once ?
I decided to give every piece that contacts water it's own
Good idea. I have mine running off 2 gfci but now you have me thinking of rewiring. I would like to have a plastic box similar to a panel box that I could mount the electrical inside. I have looked at a lot of storage boxes but can't find at suitable one. I would also like to see arc fault interrupters designed the same way as gfci. By that I mean being able to replace a single outlet with a afci.

Last edited by kole; 05-12-2012 at 09:13 PM.
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Old 05-12-2012, 09:43 PM
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I will start one, but no time until tomorrow...
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Old 05-12-2012, 11:53 PM
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You could just replace the standard breaker with an arc fault. It's my opinion that the gfci is the most important piece.

It's really smart to have multiple GFIs. You don't want to lose every piece of gear at once, especially if you are on vacation or whatever. Losing a powerhead isn't the end of the world like your whole system shutting down for a few days.

Greg pointed out on my DIY build that I only had one GFI. I was going to run everything through it, but I don't want to lose the whole system at once. My tank is fresh water, and a lot lower risk, but it's still a risk. I ended up getting six GFIs and pretty much splitting each item to it's own GFI. You can share low risk things like dosers, fans, etc. but your return pump, CL, skimmers, etc. should really have their own.

I also added a few switches so I can easily shut down my CL and return pump if I need to for maintenance without digging around and tracing wires.

It's also handy to use a labeller to label the plugs and matching cables. That way everything has it's place and is easy to unplug/ plug in.
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Old 05-13-2012, 01:08 AM
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Originally Posted by justincgdick View Post
You could just replace the standard breaker with an arc fault

I also added a few switches so I can easily shut down my CL and return pump if I need to for maintenance without digging around and tracing wires.

It's also handy to use a labeller to label the plugs and matching cables. That way everything has it's place and is easy to unplug/ plug in.
Arc faults have their drawbacks, but are a good addition if used correctly

I use the GFCI test button as as switch if I don't unplug something

I agree and all my stuff is labelled
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Old 05-13-2012, 01:51 AM
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The fires were started with saltwater dripping on the power bars. Will a gfci stop or prevent the fire from starting or would you need a afci? I have no idea if it would or would not. I thought gfci were more for the physical safety of the person working around the tank.
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Old 05-13-2012, 03:28 AM
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A AFI would offer more protection, but I think one needs both?. A GFI will only trip if it senses current going to ground, not back on the neutral. One can have a short on a GFI, between the hot and the Neutral and it not trip. Conversly, a AFI only trips when it senses an arc. Be it to ground or neutral. Most cases a AFI would work. Not on halide lights, I'm not sure. But say a pump leaks some to the tank, a AFI won't pick that up, a GFI will. AFI's can also trip by just switching or unpluging components. Heaters can sometimes trip them as well.

Like everything in this hobby, nothing is foolproof
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Umm, a tank or 5
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Old 05-13-2012, 02:22 PM
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Quote:
Originally Posted by banditpowdercoat View Post
A AFI would offer more protection, but I think one needs both?. A GFI will only trip if it senses current going to ground, not back on the neutral. One can have a short on a GFI, between the hot and the Neutral and it not trip. Conversly, a AFI only trips when it senses an arc. Be it to ground or neutral. Most cases a AFI would work. Not on halide lights, I'm not sure. But say a pump leaks some to the tank, a AFI won't pick that up, a GFI will. AFI's can also trip by just switching or unpluging components. Heaters can sometimes trip them as well.

Like everything in this hobby, nothing is foolproof
Yup, they wont fire halides. And yes, they do sometimes, {not often}, trip when pulling a plug. My home has AFI/GFI as standard breakers for both bedrooms and bathrooms. I believe its code here but not sure.

My office/fishroom, has that receptacle plus I installed a separate dedicated 15a line with its own GFI.
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Old 05-13-2012, 02:27 PM
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Quote:
Originally Posted by banditpowdercoat View Post
A AFI would offer more protection, but I think one needs both?. A GFI will only trip if it senses current going to ground, not back on the neutral. One can have a short on a GFI, between the hot and the Neutral and it not trip. Conversly, a AFI only trips when it senses an arc. Be it to ground or neutral. Most cases a AFI would work. Not on halide lights, I'm not sure. But say a pump leaks some to the tank, a AFI won't pick that up, a GFI will. AFI's can also trip by just switching or unpluging components. Heaters can sometimes trip them as well.

Like everything in this hobby, nothing is foolproof
actualy a GFI measures the difference between the hot and the nutral, doesn't measure the ground at all. so this is wrong.

An arch fault breaker is esentualy useless on a fish tank unless you have an animal that chewes cords, especialy if you have MH lights, and I recomend against having them on anything important as they frequently have false positive trips. they are still trying to design a more reliable arc fault. It does pee me off that they made a misfunctioning componant code, hopefully they will come out with a more reliable version soon.
basicly if you have an electric motor, MH lighting, or any old school relays don't use Arc fault..

Steve
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