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I have a tankless hotwater heater that says it draws 54 amps (220 volts) but doesn't tell me the size of the circuit breaker to use. It uses #6 wire and I would think I would use a 60 amp dual breaker (30 amps on each breaker) to protect the wire. Is this correct or is #6 wire overkill? Any information would help.....
charles.sca...@gmail.com wrote: > I have a tankless hotwater heater that says it draws 54 amps (220 > volts) but doesn't tell me the size of the circuit breaker to use. It > uses #6 wire and I would think I would use a 60 amp dual breaker (30 > amps on each breaker) to protect the wire. Is this correct or is #6 > wire overkill? Any information would help.....
You already have the heater?? No install manual?
Who is the mfr? Do they have a web site? Most mfr list the breaker size for each model. Post the model #.
If the rating really is 54 Amp, you may need a 70 Amp breaker (that's 70 each side, NOT 35)
Is your electric service big enough to add that load?
Thanks for the quick response. I am installing it in a small cabin I own and it has 100amp service. The model is a Niagara Titan SCR2 N120. The site is below but isn't much help. It's not a big deal if it doesn't work out for me but I'd like to try.
Speedy Jim wrote: > charles.sca...@gmail.com wrote:
> > I have a tankless hotwater heater that says it draws 54 amps (220 > > volts) but doesn't tell me the size of the circuit breaker to use. It > > uses #6 wire and I would think I would use a 60 amp dual breaker (30 > > amps on each breaker) to protect the wire. Is this correct or is #6 > > wire overkill? Any information would help.....
> You already have the heater?? No install manual?
> Who is the mfr? Do they have a web site? Most mfr list the > breaker size for each model. Post the model #.
> If the rating really is 54 Amp, you may need a 70 Amp breaker > (that's 70 each side, NOT 35)
> Is your electric service big enough to add that load?
> Thanks for the quick response. I am installing it in a small cabin I > own and it has 100amp service. The model is a Niagara Titan SCR2 N120. > The site is below but isn't much help. It's not a big deal if it > doesn't work out for me but I'd like to try.
> The site is pretty useless as is the manual as they all state that it > depends on the codes of the area.
> Chuck...
You weren't kidding about their web site :-)
There are a lot of highly technical factors here which you may be willing to overlook since it's a remote cabin. I imagine others will be along shortly to expand on this. <g>
Back at the web site, their rating is based on 220V service, not 240V. The cabin likely has nominal 240V which would bump the load up to 59 Amp. A 60 Amp breaker (2 60 Amp poles, not 30/30) won't like that. I bet you will be looking at a 70 Amp breaker and even there it's a tad undersized. Check that the panel will accept large breakers.
Don't forget a Ground wire to the heater (bare ground, not White Neutral.)
>>>I have a tankless hotwater heater that says it draws 54 amps (220 >>>volts) but doesn't tell me the size of the circuit breaker to use. It >>>uses #6 wire and I would think I would use a 60 amp dual breaker (30 >>>amps on each breaker) to protect the wire. Is this correct or is #6 >>>wire overkill? Any information would help.....
>> You already have the heater?? No install manual?
>> Who is the mfr? Do they have a web site? Most mfr list the >> breaker size for each model. Post the model #.
>> If the rating really is 54 Amp, you may need a 70 Amp breaker >> (that's 70 each side, NOT 35)
>>Is your electric service big enough to add that load?
> Thanks for the quick response. I am installing it in a small cabin I > own and it has 100amp service. The model is a Niagara Titan SCR2 N120. > The site is below but isn't much help. It's not a big deal if it > doesn't work out for me but I'd like to try.
Are you seeing something I am not in the FAQ? I did RTFM and it doesn't tell me what I need. Perhaps you are the one who should be less judgemental. Do you own stock or something in this company. Geez, lighten up.
> > Thanks for the quick response. I am installing it in a small cabin I > > own and it has 100amp service. The model is a Niagara Titan SCR2 N120. > > The site is below but isn't much help. It's not a big deal if it > > doesn't work out for me but I'd like to try.
>I have a tankless hotwater heater that says it draws 54 amps (220 > volts) but doesn't tell me the size of the circuit breaker to use. It > uses #6 wire and I would think I would use a 60 amp dual breaker (30 > amps on each breaker) to protect the wire. Is this correct or is #6 > wire overkill? Any information would help.....
You might want to check with the manufacturer for their recommendations. As I see it, assuming you have 240v, you need #4 wire and a 70a breaker. And you better not be using an electric oven while this is on!
The SCR2 N-120 draws a "maximum" of 54 amps. Meaning, it will consume a maximum of 54 amps at peak power output, only as necessary. Most local codes would call for the use of a 60 amp breaker, and a #6 AWG wire gauge. Your local code or installation could be different.
>I have a tankless hotwater heater that says it draws 54 amps (220 > volts) but doesn't tell me the size of the circuit breaker to use. It > uses #6 wire and I would think I would use a 60 amp dual breaker (30 > amps on each breaker) to protect the wire. Is this correct or is #6 > wire overkill? Any information would help.....
jolt wrote: > The SCR2 N-120 draws a "maximum" of 54 amps. Meaning, it will consume a > maximum of 54 amps at peak power output, only as necessary. Most local codes > would call for the use of a 60 amp breaker, and a #6 AWG wire gauge. Your > local code or installation could be different.
> <charles.sca...@gmail.com> wrote in message > news:1164138623.184996.24190@f16g2000cwb.googlegroups.com... > >I have a tankless hotwater heater that says it draws 54 amps (220 > > volts) but doesn't tell me the size of the circuit breaker to use. It > > uses #6 wire and I would think I would use a 60 amp dual breaker (30 > > amps on each breaker) to protect the wire. Is this correct or is #6 > > wire overkill? Any information would help.....
> Thanks for the info. So that means I need a double breaker with 60 > amps on each breaker? I have new Cutler-Hammer 100amp panel.
> Chuck.....
> jolt wrote: >> The SCR2 N-120 draws a "maximum" of 54 amps. Meaning, it will consume a >> maximum of 54 amps at peak power output, only as necessary. Most local >> codes >> would call for the use of a 60 amp breaker, and a #6 AWG wire gauge. >> Your >> local code or installation could be different.
>> <charles.sca...@gmail.com> wrote in message >> news:1164138623.184996.24190@f16g2000cwb.googlegroups.com... >> >I have a tankless hotwater heater that says it draws 54 amps (220 >> > volts) but doesn't tell me the size of the circuit breaker to use. It >> > uses #6 wire and I would think I would use a 60 amp dual breaker (30 >> > amps on each breaker) to protect the wire. Is this correct or is #6 >> > wire overkill? Any information would help.....
> The SCR2 N-120 draws a "maximum" of 54 amps. Meaning, it will consume a > maximum of 54 amps at peak power output, only as necessary. Most local > codes would call for the use of a 60 amp breaker, and a #6 AWG wire gauge. > Your local code or installation could be different.
True if his installation was 350' away so he gets adequate voltage drop from 240v to 220v. I would try to prevent that by using #4.
>I have a tankless hotwater heater that says it draws 54 amps (220 > volts) but doesn't tell me the size of the circuit breaker to use. It > uses #6 wire and I would think I would use a 60 amp dual breaker (30 > amps on each breaker) to protect the wire. Is this correct or is #6 > wire overkill? Any information would help.....
> Are you seeing something I am not in the FAQ? I did RTFM and it > doesn't tell me what I need. Perhaps you are the one who should be > less judgemental. Do you own stock or something in this company. Geez, > lighten up.
It tells you what you're asking for. Matter of fact, a little later in this thread you thank another poster for a 'cut n paste' from the FAQ. <chuckle> see number nine in the following:
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