First new house

[LarryFine]

.....and when the back stab neutral comes loose you get 240V across the lines. Sweeeet.

Not if you follow 300.13(B).

 

[quogueelectric]

There's nothing wrong with MWBC's if they're wired correctly. It's true that 1p AFCI and GFCI breakers won't work.

But, an overheated neutral comes from feeding both hots from the same phase.

I only rough with 12-2-2 for afci ckts now and charge acordingly.

 

[lucky1974]

.....and when the back stab neutral comes loose you get 240V across the lines. Sweeeet.

Actually you most likely wouldn't get 240 volts. The voltage's you will see from a missing neutral on a MWBC will depend on the load.

 

[ohm]

Not if you follow 300.13(B).

What you said Larry.

 

[480sparky]

Actually you most likely wouldn't get 240 volts. The voltage's you will see from a missing neutral on a MWBC will depend on the load.

Click here.

 

[Karl H]

I only rough with 12-2-2 for afci ckts now and charge acordingly.

I just read your sig. and understood every word. I think the research is
correct. Honestly, I was amazed you could type that compared to my ability
to read it! :grin:

 

[LarryFine]

I only rough with 12-2-2 for afci ckts now and charge acordingly.

I've never used XX-2-2 NM cable. In fact, I've never even seen any in person. (I'm a depra..., I mean, a deprived child.)

I almost always use single circuits in residential, and use MWBC's in non-residential (when the situation permits.)

 

[gndrod]

II pigtails

II pigtails

What you said Larry.

I agree. rbj

 

[hardworkingstiff]

Nice link 480sparky!





I'm glad I don't do residential anymore. :smile:

I hope I don't have to return to it.

 

[Ohmy]

Not if you follow 300.13(B).

That is true...you would not have loose back stab outlets if you don't back stab.

 

[Ohmy]

Actually you most likely wouldn't get 240 volts. The voltage's you will see from a missing neutral on a MWBC will depend on the load.

Load....like when you turn on your new flat screen?

 

[480sparky]

Nice link 480sparky!





I'm glad I don't do residential anymore. :smile:

I hope I don't have to return to it.

You don't do MWBCs in pipe-n-wire jobs?

 

[zog]

"We're all ignorant, just in different areas."

Ignorant does not mean stupid or dumb, but ignorant. I don't mean this in a derogatory sense. Just that you are basically out of your element. Some doctors are general practitioners, others are specialists. You seem to be a specialist, and are being asked to do work outside your specialty.

I've got to agree with the others that on are of the 'fish out of water' side of the fence. I'm not saying you're incapable of wiring a house, but you would not be able to wire it effeciently. You will spend three to four times the labor and God-knows-how-much material to accomplish the same result an experienced Romex Jockey will.

You will be setting yourself up for some serious troubleshooting issues, first-go-around code violations (hopefully the inspector will catch them for you at rough-in!) and some make-your-scalp-bleed headscratchers.

Very well said! I can do anything with switchgear and MV systems but no way would I attempt to wire my own house. Intellegence is knowing what you know and knowing what you dont know.

 

[hardworkingstiff]

You don't do MWBCs in pipe-n-wire jobs?

I sure do wire MWBCs and have understood them since 1972. I'm not sure why you asked that question though.

 

[480sparky]

I sure do wire MWBCs and have understood them since 1972. I'm not sure why you asked that question though.

Just seemed strange that in the world of pipe, MWBCs are more the rule than the exception. Your post seemed to indicate that you hated resi because of the MWBCs, but I find very few of them is resi work.

 

[Sparky555]

My worst nightmare came tru today I was asked to wire my bosses friends
new house. We normally do comm/indus but I figure I better finally get it over with,
any advise on how i should approach this? Its 1800 sqft and 4 br 2 bath. Shoud I rough in all my recptacles I feel really lost I now the code as far as 2 appiance 1 laundry gfci restroom but my rough in and lay all my swithces WHAT? I normally work on Mazak cnc
machines motorcontrols and plcs. but I guess my boss really needs me to do it he says he
doesnt feel good about sending anyone else to one of our best customers new summer
HOuse! Any advise will do thanks

8 pages and no 2nd post by mannyb?

 

[220/221]

We skeered him off.


I heard he's a plumber now.

 

[LarryFine]

8 pages and no 2nd post by mannyb?

It happens. Check the Members List sorted by Posts count. There are many 0 and 1 Post members.

 

[Power Tech]

It happens. Check the Members List sorted by Posts count. There are many 0 and 1 Post members.

Some of you guys are brutal. I enjoy it though.