I'm installing a S.E.T.S. tankless water heater and it requires a 125 amp breaker on the 200 amp service panel feeding the service disconnect near the water heater. The water heater and service disconnect will need a 30 ft run of cable from the main service panel. What size cable will I need to use?
220 v 125 amp 30 ft run cable size
- Thread starter capncraig
- Start date
- Status
- Location
- New Jersey
- Occupation
- Journeyman Electrician
Re: 220 v 125 amp 30 ft run cable size
Is this for a home project or on a ship?
Is this for a home project or on a ship?
- Location
- New Jersey
- Occupation
- Journeyman Electrician
Re: 220 v 125 amp 30 ft run cable size
This sounds like a DIY question and forum rules prohibit us from responding directly to your question.
* This NEC? Forum is for those in the electrical and related industries.
Questions of a "How-To" nature by persons not involved in the electrical industry will be removed without notice.
You would need to provide substantiation to the Forum Moderators that you are in the electrical or related industries and we would be happy to answer this and any other questions that you may have.
This sounds like a DIY question and forum rules prohibit us from responding directly to your question.
* This NEC? Forum is for those in the electrical and related industries.
Questions of a "How-To" nature by persons not involved in the electrical industry will be removed without notice.
You would need to provide substantiation to the Forum Moderators that you are in the electrical or related industries and we would be happy to answer this and any other questions that you may have.
Re: 220 v 125 amp 30 ft run cable size
Actually, I'm correcting a faulty installation made by a "Licensed" Electrician. He ran three lines of #8 AWG from three 50 amp breakers directly to the water heater, bypassing the service disconnect. After having problems with the wter heaters operation, I went out to find out why. I read the installation instructions provided by the manufacturer and discoverred that there was supposed to be a service disconnect provided power from a 125 amp breaker. So, more research was due for getting it right.
Thanks anyhow.
Actually, I'm correcting a faulty installation made by a "Licensed" Electrician. He ran three lines of #8 AWG from three 50 amp breakers directly to the water heater, bypassing the service disconnect. After having problems with the wter heaters operation, I went out to find out why. I read the installation instructions provided by the manufacturer and discoverred that there was supposed to be a service disconnect provided power from a 125 amp breaker. So, more research was due for getting it right.
Thanks anyhow.
- Location
- Lockport, IL
- Occupation
- Semi-Retired Electrical Engineer
Re: 220 v 125 amp 30 ft run cable size
You appear to be using the phrase "service disconnect" in an incorrect manner. I'm not at all sure you understand the nature of the task you are undertaking. My best advice is to seek the assistance of another licensed electrician. In any event, the Forum rules prohibit us from giving you any assistance.
You are welcome to use this Forum to learn whatever you want to learn, but we cannot offer advice or assistance on performing electrical installation work at your own home. Our concern is that you may get only the answer to the question that you ask, and get no answer to the thousand other questions that you should have asked, but did not know that you needed to ask. The thousand of other questions are the ones that electricians, electrical engineers, and other professionals in the electrical industry would have known about, and would have understood the answers to, as part of their years of training.
?A little knowledge is a dangerous thing.? The Owner and Moderators of this Forum do not wish to risk allowing you and your family to be placed in danger, by giving you too little information.
I am closing this thread.
You appear to be using the phrase "service disconnect" in an incorrect manner. I'm not at all sure you understand the nature of the task you are undertaking. My best advice is to seek the assistance of another licensed electrician. In any event, the Forum rules prohibit us from giving you any assistance.
You are welcome to use this Forum to learn whatever you want to learn, but we cannot offer advice or assistance on performing electrical installation work at your own home. Our concern is that you may get only the answer to the question that you ask, and get no answer to the thousand other questions that you should have asked, but did not know that you needed to ask. The thousand of other questions are the ones that electricians, electrical engineers, and other professionals in the electrical industry would have known about, and would have understood the answers to, as part of their years of training.
?A little knowledge is a dangerous thing.? The Owner and Moderators of this Forum do not wish to risk allowing you and your family to be placed in danger, by giving you too little information.
I am closing this thread.
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