[LSWM]

Originally Posted by bobblehead

I would wire my own high temp cutoff with dpdt relays. But Idk where you're comfort level is with wiring. It might be something you want to buy prefabbed.

You must have edited this is quickly I didn't see it...

I am perfectly comfortable doing all my own wiring. I'm looking to build my own flip box as well as anything else that is necessary. So you are saying just a 120v high temp shutoff, commercially available, wired into a 240v box just like a 120v timer would be wired into a 240v flip box? Or is there a specific shutoff you would recommend?

[rives]

I would use both a high temperature thermostat and a smoke detector to drive some type of circuit that would dump all the power if either condition occurs. This could be done with either a contactor or a shunt-trip breaker. A shunt-trip would be my choice over keeping a large contactor enerqized continuously.

*edit* - The newer "combination" AFCI breakers include a GFCI function.

[LSWM]

Originally Posted by rives

I would use both a high temperature thermostat and a smoke detector to drive some type of circuit that would dump all the power if either condition occurs. This could be done with either a contactor or a shunt-trip breaker. A shunt-trip would be my choice over keeping a large contactor enerqized continuously.

*edit* - The newer "combination" AFCI breakers include a GFCI function.

Thanks for the input rives... I may have more questions for you to come.

Originally Posted by DrFever

For what its worth i would hire a electrician to make sure everything is perfectly balanced that will be 90 percent of what will catch fire, or trip

Maybe someone can correct me if I'm wrong, but wouldn't running 240v electronics pull evenly from both legs? There shouldn't be an imbalance when running ballasts at 240(220)v. In the states 220 is from two hot 120v in opposing phase... I think...

[bobblehead]

Originally Posted by DrFever

Really fan catching on fire ??? never herd of it have used same fans for 5 years but safety is safety

I've had ballasts running for 5 years that never caught fire... but there there was that one that did... Anything electric has the potential to start a fire. I think it's unlikely for a fan to do anything more than die, but you never know... and I don't ever want to get caught with my pants down again.

Thanks for the input Dr. Fever. I agree the OP should consult with an electrician. I happened to have one show me what I'm doing wiring circuits and he's checked my work since then, but I let him upgrade my panel to 200A before I did anything.

[Swollencalyx]

Glad to see you're stepping up the fire prevention. In the construction industry a 2hr rated fire wall consists of 2 layers of 1" fire rated Sheetrock. It's expensive but to building code. As for ballast. I've worked in mills on lots of HPS magnetic ballasts that have been chard up but never caught fire. Not saying it can't happen. Heat is the #1 killer of electronics. I like using muffin fans to cool ballast banks and ensure longevity of my installs. Even on digital ballast. im not a big fan of gfcis or afcis on motors since they tend to false trip quite often. Smoke detectors, a clean environment, and a little commen sense on not overloading circuits goes a long way.

SC

[devilgoob]

Why not have loads of water suspended and teetering, attached to a string that runs through a series of pullie's through the room?

If one part of the string breaks because of fire, it dumps water and turns off switches by falling. Cool huh? Daring as shit though.

Before the buckets or even sprinklers go, have them toss OFF the switches.

But's that stopping a fire.

People only want to slow them down, suffocate them, make it unlikely. I've recommended the idea before. LOL It would work, wouldn't it? I mean once a fire is going, that string breaks. Everything else is just making is less likely to spread.

[jd4083]

I have a similar question about automatic fire suppression and if there is a new system I should be looking at...have considered the halon systems at Advanced Tech in the past but when I looked recently I think it said something about how halon was no longer being produced/used in extinguishers. Is there a newer option?

[jd4083]

Originally Posted by devilgoob

Why not have loads of water suspended and teetering, attached to a string that runs through a series of pullie's through the room?

If one part of the string breaks because of fire, it dumps water and turns off switches by falling. Cool huh? Daring as shit though.

Before the buckets or even sprinklers go, have them toss OFF the switches.

But's that stopping a fire.

People only want to slow them down, suffocate them, make it unlikely. I've recommended the idea before. LOL It would work, wouldn't it? I mean once a fire is going, that string breaks. Everything else is just making is less likely to spread.

I can think of about 300 things I would rather do to prevent fires than suspend a "teetering" container of water above a room full of electricity...maybe I'm misunderstanding here

[Mikell]

Nope, I think he's on point. The only changes I would make are to use comically large water balloons and heat-triggered crossbows.

I'll post some pics once everything is teetering above my electrical wiring.

[rives]

Be sure and use salt water - it will conduct the electricity better and insure that the breaker trips quickly.