Infrared heater

[hhsting]

I have six Infratech W4028, 4000W, 208V single phase heaters. Here is the link for heaters:

https://www.amazon.com/Infratech-W-4028-SS-Stainless-Element/dp/B087CK17N1

The way drawings show being fed is as follows:

One 100A three phase 208V breaker fed the heater controller with #1 awg. From the controller there are six #10 awg cables to the heater.

Questions:

1. Typically The controller should have some sort of overcurrent protection for protecting #10 awg? If not then overcurrent protection is required or not to protect #10 awg conductors?

2. I looked at 424 but not sure would not disconnect be require at the heaters?

3. Would this sort of heater consider radiant, resistant? Which code applies?

4. Is not 100A breaker too big?

 

[ptonsparky]

1. Yes
2. Yes. Could be a receptacle.
3. Radiant is resistant.
4. Not if additional fusing/OCP is properly installed.

I 'see' minimum of a three phase 100 amp panel with 6 two pole breakers. 25 amp would be closest to the 19.23 * 1.25 for each heater. The entire panel being controlled by a single latching controller or a controller with a minimum of 6 poles. One for each heater on the load side of the individual CBs.

 

[James L]

I've installed quite a few of those heaters.
I use contactors with 120v coil, and run a 15amp circuit to switch/timer location and out to coil(s)

At the heater I use a deep Bell box and 30 amp 2-pole switch for disconnect. It's just small and neat

 

[Dennis Alwon]

I've installed quite a few of those heaters.
I use contactors with 120v coil, and run a 15amp circuit to switch/timer location and out to coil(s)

At the heater I use a deep Bell box and 30 amp 2-pole switch for disconnect. It's just small and neat

I use to use the dp 30 for water heaters--- I learned quickly that it was a beast of a job to get those #10 conductors into the 3 1/2" deep box with that switch. In some cases I had no choice but normally I used a a/c disco

 

[James L]

I use to use the dp 30 for water heaters--- I learned quickly that it was a beast of a job to get those #10 conductors into the 3 1/2" deep box with that switch. In some cases I had no choice but normally I used a a/c disco

I don't usually have any problems if I'm using stranded wire. Solid wire would be a bear for sure