Denray Posted December 1, 2014 Report Share Posted December 1, 2014 This isn't some kind of 4 prong outlet that looks like a 3 prong is it? Click to Enlarge 50.88 KB Quote Link to comment Share on other sites More sharing options...
Inspectorjoe Posted December 1, 2014 Report Share Posted December 1, 2014 3 slot - two hots and a ground - 15 A, 250 V. NEMA 6 Click to Enlarge 35.18 KB Quote Link to comment Share on other sites More sharing options...
Denray Posted December 2, 2014 Author Report Share Posted December 2, 2014 Thanks for the reply. Seems like there would not be 3 prongers used in new construction. This one says 30A on it. Quote Link to comment Share on other sites More sharing options...
mjr6550 Posted December 2, 2014 Report Share Posted December 2, 2014 That is a NEMA 6-30R receptacle. Sometimes used for welders. Here is something from Google: 30 amp. 250 volt 2-Pole 3-Wire Grounding Uses include large style window air conditioners (30,000 btu), china and pottery kilns, certain machines and office equipment in commercial applications. 2 hp rating If it was installed for a dryer I would question anything the "electrician" did. Quote Link to comment Share on other sites More sharing options...
John Kogel Posted December 2, 2014 Report Share Posted December 2, 2014 In the garage, no problemo, anywhere else call it out. Quote Link to comment Share on other sites More sharing options...
Jim Port Posted December 2, 2014 Report Share Posted December 2, 2014 Thanks for the reply. Seems like there would not be 3 prongers used in new construction. This one says 30A on it. This is a straight 240 volt receptacle, not a 120/240 that would have 2 hots, a neutral and a ground. Quote Link to comment Share on other sites More sharing options...
Inspectorjoe Posted December 2, 2014 Report Share Posted December 2, 2014 I see that configuration used with through the wall AC and heat pump units. If it says 30 amp, then it's 30 amp, but going by this chart, the size of the hots and shape of the ground make it look like it's 15 amp. Maybe the chart is wrong. Click to Enlarge 39.63 KB Quote Link to comment Share on other sites More sharing options...
John Kogel Posted December 2, 2014 Report Share Posted December 2, 2014 'Most' modern appliances have a computer module or two and they require a 120 to low voltage power supply as a rule. That is why I would question only 3 prong 240 outlets in a brand new house. Quote Link to comment Share on other sites More sharing options...
Denray Posted December 2, 2014 Author Report Share Posted December 2, 2014 Thanks for the help. Quote Link to comment Share on other sites More sharing options...
Marc Posted December 2, 2014 Report Share Posted December 2, 2014 'Most' modern appliances have a computer module or two and they require a 120 to low voltage power supply as a rule. That is why I would question only 3 prong 240 outlets in a brand new house. I haven't seen that. The only 240 volt appliances I've seen in residential that have 120 V loads and don't have an internal 240/120 transformer are clothes dryers. Marc Quote Link to comment Share on other sites More sharing options...
John Kogel Posted December 2, 2014 Report Share Posted December 2, 2014 'Most' modern appliances have a computer module or two and they require a 120 to low voltage power supply as a rule. That is why I would question only 3 prong 240 outlets in a brand new house. I haven't seen that. The only 240 volt appliances I've seen in residential that have 120 V loads and don't have an internal 240/120 transformer are clothes dryers. Marc Why do they need a neutral connection? Quote Link to comment Share on other sites More sharing options...
Marc Posted December 2, 2014 Report Share Posted December 2, 2014 'Most' modern appliances have a computer module or two and they require a 120 to low voltage power supply as a rule. That is why I would question only 3 prong 240 outlets in a brand new house. I haven't seen that. The only 240 volt appliances I've seen in residential that have 120 V loads and don't have an internal 240/120 transformer are clothes dryers. Marc Why do they need a neutral connection? The neutral is needed to get the 120 V. The ground is always needed. Marc Quote Link to comment Share on other sites More sharing options...
John Kogel Posted December 3, 2014 Report Share Posted December 3, 2014 Neutral is needed, indeed, sir. [] Quote Link to comment Share on other sites More sharing options...
Jack Davenport Posted December 7, 2014 Report Share Posted December 7, 2014 I see that configuration used with through the wall AC and heat pump units. If it says 30 amp, then it's 30 amp, but going by this chart, the size of the hots and shape of the ground make it look like it's 15 amp. Maybe the chart is wrong. Click to Enlarge 39.63 KB Your chart is most likely correct as far as the configurations are concerned. The difference is the diameter of the receptacle itself. The 15 & 20 ampere versions are a smaller diameter than those 30 amperes and over. Thus the same configuration but different size receptacles and cord caps. Quote Link to comment Share on other sites More sharing options...
Speedy Petey Posted January 2, 2015 Report Share Posted January 2, 2015 In the garage, no problemo, anywhere else call it out. May I ask what you would call out about this regardless of location? Quote Link to comment Share on other sites More sharing options...
Speedy Petey Posted January 2, 2015 Report Share Posted January 2, 2015 That is a NEMA 6-30R receptacle. Sometimes used for welders. Here is something from Google: 30 amp. 250 volt 2-Pole 3-Wire Grounding Uses include large style window air conditioners (30,000 btu), china and pottery kilns, certain machines and office equipment in commercial applications. 2 hp rating If it was installed for a dryer I would question anything the "electrician" did. This exactly. If this was installed for a dryer I feel sorry for the client. That is quite sad. Quote Link to comment Share on other sites More sharing options...
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