I just did a wiring test with 7 of the 300 watt heaters on a 12" extension tube. I capped one end and filled it with water, left the other end open of course.
So far so good. It heated the tube full of water to almost boiling within a few seconds and I pulled the plug.
Next step is to rig up a little stand that will protect the band heaters and wiring from any spills and run a test with 8 gallons of circulating water.
If that works well, I'll need to find a box that I can seal the band heaters, tube, and wiring in while exposing the tri-clover fittings on the outside. That should help with insulation and protect the electrical parts from any spills.
So far so good. It heated the tube full of water to almost boiling within a few seconds and I pulled the plug.
Next step is to rig up a little stand that will protect the band heaters and wiring from any spills and run a test with 8 gallons of circulating water.
If that works well, I'll need to find a box that I can seal the band heaters, tube, and wiring in while exposing the tri-clover fittings on the outside. That should help with insulation and protect the electrical parts from any spills.