ruxton.stanislaw
Senior Member
- Location
- Arkansas
- Occupation
- Laboratory Engineer
I have seen the combination used in high end kitchens in Canada.
Strange duplex receptacle.
- Thread starter ritelec
- Start date
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letgomywago
Senior Member
- Location
- Washington state and Oregon coast
- Occupation
- residential electrician
For euro appliances?
leviton makes a British 240 style but UL listed for here. Idk if it's cUL listed though
hbiss
EC, Westchester, New York NEC: 2014
- Location
- Hawthorne, New York NEC: 2014
- Occupation
- EC
I can tell you that the receptacle the OP is asking about is not a power/antenna receptacle. Bad things would happen if somebody plugged the antenna plug into the top. 
No, the bottom is a polarized 120V receptacle and the only thing that makes sense is a switched receptacle for a lamp. They were done away with the advent of dimmers.
-Hal
No, the bottom is a polarized 120V receptacle and the only thing that makes sense is a switched receptacle for a lamp. They were done away with the advent of dimmers.
-Hal
texie
Senior Member
- Location
- Fort Collins, Colorado
- Occupation
- Electrician, Contractor, Inspector
I never saw one of these but I seem to remember there was a version of this for TV signals back when 300 ohm twin lead was used.
LarryFine
Master Electrician Electric Contractor Richmond VA
- Location
- Henrico County, VA
- Occupation
- Electrical Contractor
texie
Senior Member
- Location
- Fort Collins, Colorado
- Occupation
- Electrician, Contractor, Inspector
Yep, we had one in our house. Then when coax became a thing in the late 60's we had 75 ohm to 300 ohm adaptors so we could match the TV ant. input. How quaint it is by modern standards. 300 ohm twin lead was a real PIA to do correctly. Sadly, I'm showing my age but fun to look back.
ruxton.stanislaw
Senior Member
- Location
- Arkansas
- Occupation
- Laboratory Engineer
One was a 3 kW Russel Hobbs kettle and a toaster. Another was some sort of Panini press and food warmer.
Frank DuVal
Senior Member
- Occupation
- Electrical Contractor, Electrical Engineer
I have an engineer friend who used them in his house's basement to allow 240 volt tools to be pugged in.
- Location
- Illinois
- Occupation
- retired electrician
Installed a lot of the 120/240 volt duplex ones in an apartment complex when I was an apprentice. One 20 amp 240 volt circuit supplied the electric baseboard heat and the 120/240 volt receptacle for a future wall mount cord and plug connected air conditioner.
kwired
Electron manager
- Location
- NE Nebraska
- Occupation
- EC
Correct.
AC over 10 amps @120 also should be on individual circuit, but that seldom happens
In all of my 50 years playing with wire never once used a combination device on new work. Was cheaper to use a two gang box & 2 devices. Turned down small jobs where Johnnie the DYI homeowner remodeled a bathroom and installed a ceiling fan with a luminare & nite light. ( had a skylight & no fan) In a 2 1/2" beveled corner single wall case and wall just had fancy title installed. He thought that I had a big enough shoe horn to install the 3 switch on one yoke device. Box had two sets of 14/2 NM cables in addition to the 14/3 & 14/2 NM he added.
Mr. Serious
Senior Member
- Location
- Oklahoma, USA
- Occupation
- Electrical Contractor
You've taught your apprentices to use only a single breaker to provide all power for any one device. And that may be a good idea, but it's not actually a code requirement, right?
Treg the electrician
Member
- Location
- lynnwood washington
- Occupation
- electrician
thats what i think too
kwired
Electron manager
- Location
- NE Nebraska
- Occupation
- EC
That once was the only reason to use a handle tie.
Liked I replied in a earlier post I was able to plug in a 3 pole 250 volt breaker in a residential single phase panel to not only show but ask the apprentice if he thought it would be legal. Without any three pole breaker being listed on breaker panel sheet the argument would be just because you can use, install or wire something that is not in the NEC does not make it approved for a certain usage. You can use a two pole breaker to supply power to say a duplex 120 volt receptacles where you broke off the tabs and had each halve feed from one pole of a two pole breaker.
210.7
Mr. Serious
Senior Member
- Location
- Oklahoma, USA
- Occupation
- Electrical Contractor
I learn new things all the time. I wasn't aware of this provision.
210.7 in the 2020 NEC says:
It wasn't a requirement when I first became an apprentice. In my 1996 code book from when I first started, the similar requirement is section 210-4 (b).
210-4 (b) in the 1996 NEC says:
Perhaps the intent was the same, but the wording of the 1996 version leaves a huge loophole that would allow a duplex receptacle to be split and fed from two completely different circuits, as long as they couldn't be considered a multiwire branch circuit. I never realized we can't do that anymore.
- Location
- Illinois
- Occupation
- retired electrician
The rule in 210.7 was new for the 2011 code.
kwired
Electron manager
- Location
- NE Nebraska
- Occupation
- EC
When I started using 1987 NEC it was basically same requirement. Dwellings with muliwire circuit on same yoke. Yes loophole to the wording then would be if not considered a multiwire circuit. Not sure how far before 1987 NEC the rule existed. The later change Don mentioned ended up requiring not only multiwire/multiple circuits on same device to have common disconnect handles but basically all MWBC, regardless where they are or what they supply. Before then was just in dwellings.
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