wiseinspections
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I recently inspected a house panel box. It had a 10/3 conductor, The red was connected to a single 20 amp breaker, the black to a seperate 20 amp breaker. Is this acceptable, is no, why, code ref please
residential wiring, panel box
- Thread starter wiseinspections
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- Massachusetts
Re: residential wiring, panel box
Can't answer the question with the provided info.
What are the breakers feeding and are the breakers on opposing phases.
Can't answer the question with the provided info.
What are the breakers feeding and are the breakers on opposing phases.
Re: residential wiring, panel box
Sounds like a 240/120 service in an older house or outbuilding. #10 is good for what? 30A?
And, strictly speaking, 240/120 would be 2-phase with the two hots 180 degrees (opposing)out of phase with each other. They must be 180 degrees apart in order to get 240V between them. Of course, we do not call it 2-phase lest we confuse it with real 2-phase in which the hots are 90 degrees apart.
[ December 03, 2004, 10:43 PM: Message edited by: rattus ]
Sounds like a 240/120 service in an older house or outbuilding. #10 is good for what? 30A?
And, strictly speaking, 240/120 would be 2-phase with the two hots 180 degrees (opposing)out of phase with each other. They must be 180 degrees apart in order to get 240V between them. Of course, we do not call it 2-phase lest we confuse it with real 2-phase in which the hots are 90 degrees apart.
[ December 03, 2004, 10:43 PM: Message edited by: rattus ]
Re: residential wiring, panel box
40 amps, but it may or may not be able to protected at that (maybe alot more even) depending on the load and what article would apply. This isn't necessarily the question here, there is more involved as in Multiwire branch circuits as mentioned by Iwire and Midget.
Roger
[ December 03, 2004, 10:47 PM: Message edited by: roger ]
40 amps, but it may or may not be able to protected at that (maybe alot more even) depending on the load and what article would apply. This isn't necessarily the question here, there is more involved as in Multiwire branch circuits as mentioned by Iwire and Midget.
Roger
[ December 03, 2004, 10:47 PM: Message edited by: roger ]
jimwalker
Senior Member
- Location
- TAMPA FLORIDA
Re: residential wiring, panel box
Do home inspectors have at least the level of journeyman electricians ? We keep seeing post from them indicating they have no clue as to what they are looking at but charge for the service.
Do home inspectors have at least the level of journeyman electricians ? We keep seeing post from them indicating they have no clue as to what they are looking at but charge for the service.
stars13bars2
Senior Member
Re: residential wiring, panel box
You would think it possible to even charge more for wiseinspections as opposed to stupidinspections, or idiotinspections.
You would think it possible to even charge more for wiseinspections as opposed to stupidinspections, or idiotinspections.
jimwalker
Senior Member
- Location
- TAMPA FLORIDA
Re: residential wiring, panel box
"You would think it possible to even charge more for wiseinspections as opposed to stupidinspections, or idiotinspections."
I am sure he charges more.The question is what is the customer getting or should i say not getting
"You would think it possible to even charge more for wiseinspections as opposed to stupidinspections, or idiotinspections."
I am sure he charges more.The question is what is the customer getting or should i say not getting
petersonra
Senior Member
- Location
- Northern illinois
- Occupation
- engineer
Re: residential wiring, panel box
Most of them don't know a whole lot about roofing, heating, plumbing, or carpentry either.
You basic home inspector will be able to find really awful problems like termites, rot, lead pipes and 60 A services, but he may miss a lot of things that are not "right".
I still think the idea of having someone look over the house with a critical eye has value, even if they are not necessarily experts in all the trades associated with home building.
Most of them don't know a whole lot about roofing, heating, plumbing, or carpentry either.
You basic home inspector will be able to find really awful problems like termites, rot, lead pipes and 60 A services, but he may miss a lot of things that are not "right".
I still think the idea of having someone look over the house with a critical eye has value, even if they are not necessarily experts in all the trades associated with home building.
- Location
- Massachusetts
Re: residential wiring, panel box
Guys you ready for this, I am a 'NACHI Certified Home Inspector'
I have never performed a home inspection but I do have a nice certificate.
Yes the home inspectors make mistakes but they also find and cause to be fixed a lot of truly bad wiring that no electrician or inspector would ever see.
Also they bring this information to light at a time when people will spend the money to fix the problems.
The home inspectors I know do not think they are code inspectors and they do not want to do our jobs. As a matter of fact they make work for electricians.
Just my opinion, Bob
[ December 04, 2004, 06:21 PM: Message edited by: iwire ]
Guys you ready for this, I am a 'NACHI Certified Home Inspector'
I have never performed a home inspection but I do have a nice certificate.
Yes the home inspectors make mistakes but they also find and cause to be fixed a lot of truly bad wiring that no electrician or inspector would ever see.
Also they bring this information to light at a time when people will spend the money to fix the problems.
The home inspectors I know do not think they are code inspectors and they do not want to do our jobs. As a matter of fact they make work for electricians.
Just my opinion, Bob
[ December 04, 2004, 06:21 PM: Message edited by: iwire ]
Re: residential wiring, panel box
"Roger", Roger,
Yes, "legs" would be more appropriate, but as you know many of us get sloppy with our speech. And indeed 240/120 is really single phase derived from one phase of a 4-wire, 3-phase distribution system. At least that it what it appears to be from the ground, and this old man is not climbing any poles to check it out.
"Roger", Roger,
Yes, "legs" would be more appropriate, but as you know many of us get sloppy with our speech. And indeed 240/120 is really single phase derived from one phase of a 4-wire, 3-phase distribution system. At least that it what it appears to be from the ground, and this old man is not climbing any poles to check it out.
- Location
- Massachusetts
Re: residential wiring, panel box
Originally posted by roger:
if this is a single phase residential panel there is only one phase.
- Location
- Lockport, IL
- Occupation
- Semi-Retired Electrical Engineer
Re: residential wiring, panel box
From the point of view of physics, this is a valid description. There really are two different phases, and they really are 180 degrees apart. It does not matter that they originate from the same single secondary winding. If you connect them to an oscilloscope, you will see two different signals, the one rising as the other is falling. But as rattus says, it is best not to call it by that name, for fear of confusion. We have chosen to give this configuration the name ?single phase 120/240 volt.? But that is a choice, not a mandate from Mother Nature.
Re: residential wiring, panel box
I have never understood how everyone on here gets 2 phase out of the Edison 240/120 single phase?
It is single phase only, two phase is 2 voltage source just like three phase is three voltage sources supplied by 3 lines for economical and functional reasons like the three phase motor.
There is nothing 180 degrees out.
Ronald
I have never understood how everyone on here gets 2 phase out of the Edison 240/120 single phase?
It is single phase only, two phase is 2 voltage source just like three phase is three voltage sources supplied by 3 lines for economical and functional reasons like the three phase motor.
There is nothing 180 degrees out.
Ronald
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