mwbc residential
- Thread starter joelj
- Start date
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mbrooke
Batteries Included
- Location
- United States
- Occupation
- Technician
I think your over reacting. There is nothing wrong with a MWBC in residential. Ive seen/wired many houses like this. As long as there on seperate phases and the neutral is seperatly pigtailed there is no concern. With the price of copper today it is a no brainier. MWBCs cut cost in half. GFCIs can be either plug or 2 pole GFCI breaker. GE makes AFCIs without the RCD built in so they are good for shared neutrals.
- Location
- Chapel Hill, NC
- Occupation
- Retired Electrical Contractor
Sure mwbc are legal but in a residence I would not install one esp. if the circuits are AFCI. It is a mistake, IMO.
- Location
- Windsor, CO NEC: 2017
- Occupation
- Service Manager
Dennis,
None of these circuits require AFCI protection. I wouldn't blink at installing MWBC to any of them. In fact, some of these appliances sometimes require a MWBC all to themselves.
None of these circuits require AFCI protection. I wouldn't blink at installing MWBC to any of them. In fact, some of these appliances sometimes require a MWBC all to themselves.
- Location
- Chapel Hill, NC
- Occupation
- Retired Electrical Contractor
Dennis,
None of these circuits require AFCI protection. I wouldn't blink at installing MWBC to any of them. In fact, some of these appliances sometimes require a MWBC all to themselves.
I saw that he was referring to kitchens but I still would not do it. I have seen many loose noodles on a mwbc blow out the electronics in todays kitchen.
- Location
- Windsor, CO NEC: 2017
- Occupation
- Service Manager
You would have had a heckuva time with the micro/convection oven I wired last week - it required 120/240 to operate.
- Location
- Massachusetts
Instead of 'mwbc', please refer to it as the 'circuit that shall not be named'. It's better luck.
I feel compelled to share this with you. [h=3]Beware; the Multiwire Branch Circuit[/h]
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- Location
- Windsor, CO NEC: 2017
- Occupation
- Service Manager
Joethemechanic
Senior Member
- Location
- Hazleton Pa
- Occupation
- Electro-Mechanical Technician. Industrial machinery
Was it meek mark or something like that?
- Location
- Massachusetts
I think the larger evil deserves some recognition here, it's the "Multi Wire Service Entrance" oh the horror it can cause.
I think the generator winder is going to have a hard time understanding why we want a dedicated neutral winding per phase. :blink:
- Location
- Chapel Hill, NC
- Occupation
- Retired Electrical Contractor
Sticks and stones will break my bones..... :lol:
:lol:
Joethemechanic
Senior Member
- Location
- Hazleton Pa
- Occupation
- Electro-Mechanical Technician. Industrial machinery
- Location
- Massachusetts
You need to ground each phase to three different planets.
- Occupation
- Licensed Electrician
I love it. He does an amazing job of articulating the most unconvincing arguments.
Joethemechanic
Senior Member
- Location
- Hazleton Pa
- Occupation
- Electro-Mechanical Technician. Industrial machinery
If I went back to 2 phase, could I ground one of them to the moon, or is satellite grounding prohibited?
mbrooke
Batteries Included
- Location
- United States
- Occupation
- Technician
I think the reason why MWBC in resi gets such a bad rep is because Joe the homeowner gets scared when he sees that extra red wire.
Personally, if you dont understand power systems fully dont modify them. The way I see it, all of today's homes have to be wired in such a way that 30 minutes of Saturday DIY will be enough for Joe the home owner to be safe. :lol:
Personally, if you dont understand power systems fully dont modify them. The way I see it, all of today's homes have to be wired in such a way that 30 minutes of Saturday DIY will be enough for Joe the home owner to be safe. :lol:
=3 w/g
=3 w/g
I would double the learning curve time when red half-hots get added to the bedroom circuits mix.
=3 w/g
I would double the learning curve time when red half-hots get added to the bedroom circuits mix.
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