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Old June 1, 2016   #68
Worth1
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Join Date: Feb 2006
Location: Den of Drunken Fools
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Since I am still lost all I can do is give information whether it is asked for or not.
The controller comes to mind.
If the dry contacts in the controller are rated for say 1/2 amp then that is all the currant you can draw but you would be batter off stepping it down a little so you aren't running at full capacity if the relay.
To activate something that draws more currant you have to use that relay to activate a bigger relay.

Are these wash tubes going to be outside or in a green house or in the house or what.

As far as how much tubing you need inside of them depends on the temperature they are trying to overcome and the temperature of the fluid you are going to pass through the tubes.

I am not going to contaminate your thread anymore with safety.
but for one thing.
If you get electricity anywhere around the tubs ground the tubs.
Do this by running a ground wire to each tube and connecting it to a stake driving in the ground about 6 feet or so.
This is what you call electrical bonding.
https://www.google.com/url?sa=t&rct=...-E666Ex9E699Og

Worth
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