QOD for 9/13/04 (Electrical)

Originally Posted By: dbush
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Back to electrical. If anyone has any suggestions for questions, please email them to me at membership@nachi.org


![](upload://vrM2dUMCyhGjEVlQmkFWSG1tjoD.jpeg)

BASED ON WHAT YOU CAN SEE IN THE PICTURE

PS, Thanks to Bob Wills for the picture, taken from www.nachi.org/gallery


--
Dave Bush
MAB Member

"LIFE'S TOUGH, WEAR A HELMET"

Originally Posted By: cbuell
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Dave,


I think you may have forgotten to include the correct choice



It is easier to change direction than it is to forget where one has been.

Originally Posted By: phinsperger
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I think the answer is there. Read the choices carefully and you’ll see what he is getting at.


The pic could have been a bit bigger ![aiwebs_010.gif](upload://8vo4fEm9II5FBI6cqYDSkKjvOYK.gif)


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.


Paul Hinsperger
Hinsperger Inspection Services
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Originally Posted By: Brian A. Goodman
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I think know which answer must be the correct one, but it assumes things we can’t determine from the picture.


Originally Posted By: bbadger
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I can not pick one out of the list.


I agree with Brian
Quote:
I think know which answer must be the correct one, but it assumes things we can't determine from the picture.



Originally Posted By: cbuell
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I agree with both Bob and Brian



It is easier to change direction than it is to forget where one has been.

Originally Posted By: jonofrey
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I can’t believe so many picked “b” as the answer. I don’t see no stinking sub-panel! icon_lol.gif



Inspection Nirvana!


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Originally Posted By: bbadger
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John what if that double tap feeds another service panel? icon_cool.gif


Originally Posted By: jpope
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Bob,


Do I dare ask?

How many "service" panels are allowed on one home? If more than one, then what would define "service?" ![icon_cool.gif](upload://oPnLkqdJc33Dyf2uA3TQwRkfhwd.gif)


--
Jeff Pope
JPI Home Inspection Service
"At JPI, we'll help you look better"
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Originally Posted By: jonofrey
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bbadger wrote:
John what if that double tap feeds another service panel? ![icon_cool.gif](upload://oPnLkqdJc33Dyf2uA3TQwRkfhwd.gif)


I don't see no stinking second service panel!

All I see are lugs and wire. Which makes me think the correct answer is "a".

Bob,

Doesn't a "Service Panel" require it's own separate feed?


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Inspection Nirvana!

We're NACHI. Get over it.

Originally Posted By: bbadger
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jpope wrote:
Bob,

Do I dare ask?

How many "service" panels are allowed on one home? If more than one, then what would define "service?" ![icon_cool.gif](upload://oPnLkqdJc33Dyf2uA3TQwRkfhwd.gif)


I like a guy that is willing to jump right in.

Six, or more accurately six service disconnects which essentially limits the number of service panels to six.

When I used to do residential I found very few added panels that where installed correctly to be considered service panels, but it can be done, certainly not by double tapping.

What makes a service panel a service panel and not sub panel?

1)The panel has to be listed as service equipment or suitable for service equipment.

2)Bonding, it would have to have a bonded neutral

3)Grounding electrode conductor in each panel.

The number of service entrance conductors generally determines how many 'services' you have, generally limited to one.

Very hard to speak of this in absolutes with the exceptions that can be applied.


Originally Posted By: bbadger
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jonofrey wrote:
Bob,

Doesn't a "Service Panel" require it's own separate feed?


Nope. ![icon_smile.gif](upload://b6iczyK1ETUUqRUc4PAkX83GF2O.gif)

It can not be fed from a double tap but change the double tap to a permitted splicing device and it is possible to feed a second or sixth service panel.

Oh I did forget to also mention they will need to be grouped.

This also assumes load calculations show that the service conductors will not be overloaded. ![icon_smile.gif](upload://b6iczyK1ETUUqRUc4PAkX83GF2O.gif)


Originally Posted By: jonofrey
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[quote="bbadger


It can not be fed from a double tap but change the double tap to a permitted splicing device and it is possible to feed a second or sixth service panel.[/quote]


I assume you are talking about something like an "h" tap on the service conductors before they hit the service panel(s). Like in a gutter.


--
Inspection Nirvana!

We're NACHI. Get over it.

Originally Posted By: Mike Parks
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For HI’s use one service per home.


For all others (I mean qualified persons) no limit.

Article 230 is hard for most sparkies and EE's to understand. That is the reason for my above blanket statements.

Mike P.


Originally Posted By: jwortham
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Pssst…guys…go here.


www.nachi.org/gallery/details.php?image_id=103


Originally Posted By: jonofrey
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dbush wrote:

![](upload://vrM2dUMCyhGjEVlQmkFWSG1tjoD.jpeg)

BASED ON WHAT YOU CAN SEE IN THE PICTURE



You cannot assume those wires connect to a sub panel based on that picture.


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Inspection Nirvana!

We're NACHI. Get over it.

Originally Posted By: jwortham
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True.


I let the fact that I had already seen the picture influence my answer.


Originally Posted By: jonofrey
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…but you can assume that the lugs are inappropriate for the double tapped wires. Therefore, the best answer is “a”. The wire gauge is oversized for the breaker.



Inspection Nirvana!


We're NACHI. Get over it.