SSR heat question in enclosure

[Dolomieu]

So I thought I'd be nice and build my brother a temp controller for his lab oven he is using for powder coating. Of course I thought this would be a great way to also build a rims setup for myself.

This will be a 20a set up and I found a schematic from PJ that I think will work. Though this is my first time dealing with SSRs and I have some basic questions. For the oven build the controller will most likely be just on and off using the sly-1512ar. Will this generate the same amount of heat as if I had it switching on and of rapidly?

I was thinking of boxing this up in a harbor freight ammo box but I'm starting to think it will melt. The SSR I have has a heat sink on it but i'm guessing that won't do all that much good if I have it all closed up in a plastic box. Would a metal tool box be a better option? I'm think that attacking the heat sink to the tool box would help dissipate the heat a bit better.

Anyone mind sharing some knowledge on this topic as I do want it to be safe.

Thanks in advance

 

[atoughram]

I've got one of these http://www.homedepot.com/p/Wiegmann...Cover-Box-with-Knockouts-SC080804RC/100537130 with a single SCR in it - but I've got a hole cut in the side with a 40mm fan (IIRC) sucking the hot air out.

 

[brew_ny]

I asked at my place of work why they do not have heat sinks on their SSRs

they said they mount their SSRs on the metal enclosure and use it as the heat sink

all the best

S_M

 

[Dolomieu]

Thank you both. I think I'll grab that enclosure and wire it up. I can add a fan later if need be.

Much appreciated

 

[Dolomieu]

http://m.harborfreight.com/steel-toolbox-97532.html

That was the tool box I was thinking of using

 

[brew_ny]

http://m.harborfreight.com/steel-toolbox-97532.html

That was the tool box I was thinking of using

should work for you

 

[Dolomieu]

Cool well I sent the links to my brother and he replied with a 50/cal ammo case.. So I guess I'll have to try to cut into one of those. At least I have some laying around the garage.

 

[sandyeggoxj]

http://m.harborfreight.com/steel-toolbox-97532.html

That was the tool box I was thinking of using

I use a toolbox like that to hold all 4 tire chains for my pickup.