Insta-hot hard wired in kitchen area

[bullheimer]

All kit recepts have to be GFI protected, this is going to be hardwired to 3 40A breakers so am I correct in assuming I don't need GFI breakers?
I think i read something about the hard wiring not mattering anymore and therefor I would need GFI breakers. I can't seem to find what I was looking at, it might have been in an Electrical Contractor magazine. Thanks for any help.
Oh, also, I've heard these units (it's a name brand I dont remember, but was purchased online) often lose a heating element within a year, and it's hard to find either the part or a service tech. Why wouldn't my plumber be able to service it. I'm wondering if I should try to talk the homeowner out of it. No gas in the house. And would just one DW, kit sink and bath sink, 1 washing machine, is this going to save money or cost a fortune? It's rated at 112Amps!

 

[Fred B]

Personally I would never recommend an electric on-demand water heater. A heat-pump type water heater would be way more efficient that an electric on demand. Most panels if not already designed in for the load will not have the capacity and end up costing more to upgrade even with any potential perceived saving a HO might think they would get.

 

[Greentagger]

All kit recepts have to be GFI protected, this is going to be hardwired to 3 40A breakers so am I correct in assuming I don't need GFI breakers?
I think i read something about the hard wiring not mattering anymore and therefor I would need GFI breakers. I can't seem to find what I was looking at, it might have been in an Electrical Contractor magazine. Thanks for any help.
Oh, also, I've heard these units (it's a name brand I dont remember, but was purchased online) often lose a heating element within a year, and it's hard to find either the part or a service tech. Why wouldn't my plumber be able to service it. I'm wondering if I should try to talk the homeowner out of it. No gas in the house. And would just one DW, kit sink and bath sink, 1 washing machine, is this going to save money or cost a fortune? It's rated at 112Amps!

You may be referring to 210.8(D)(1)-approx.(12) where it references specific appliances. My apologies, do not have my references handy.

 

[Fred B]

You may be referring to 210.8(D)(1)-approx.(12) where it references specific appliances. My apologies, do not have my references handy.

A water heater is not listed among the specific appliance/equipment here.

 

[Barbqranch]

And would just one DW, kit sink and bath sink, 1 washing machine, is this going to save money or cost a fortune? It's rated at 112Amps!

No shower or bathtub?

 

[gadfly56]

Personally I would never recommend an electric on-demand water heater. A heat-pump type water heater would be way more efficient that an electric on demand. Most panels if not already designed in for the load will not have the capacity and end up costing more to upgrade even with any potential perceived saving a HO might think they would get.

I don't believe this is something other than a tap to provide a cup of hot water for tea, hot cocoa, or something similar. An on-demand water heater is perfect for something like this.

 

[ptonsparky]

I don't believe this is something other than a tap to provide a cup of hot water for tea, hot cocoa, or something similar. An on-demand water heater is perfect for something like this.

3-40 amp breakers is a bit more than a cup of hot water.

 

[cadpoint]

I'd suggest go for a puppy water heater 240/120V and an intermatic water timer.
If they really want to spend money install a hot circulation line for system,
or even a under counter device for hot water in line till water arrives at usage point!
People really either over or under think these water usage requirements, I think it's way over thought
unless their a chef.

 

[JohnE]

With the load in the OP, it has to be an on-demand electric domestic water heater. Not the traditional instant-hot for tea.

 

[gadfly56]

3-40 amp breakers is a bit more than a cup of hot water.

Fair, but maybe a little more info on this "appliance" would be helpful.

 

[gadfly56]

With the load in the OP, it has to be an on-demand electric domestic water heater. Not the traditional instant-hot for tea.

My confusion stems from the title. I've only ever heard the term used for low flow applications where you want water hotter than the tap for tea and such.