3 Phase?

[DXN1EL]

A few months ago I wire a 50Amp breaker for my PA-300. I took a 30 amp out so I could fit the 50 amp one,
So this past week I connect the wire that it was on the 30 amp one because I needed power on the outlet and light on the outside of the patio, so I put it on another breaker.
The thing is that when I plug the bench it work fine for a wile and then it burn out. "I bought it used"
that same say at night I plug a light and then it burn after about one hour put another same thing happen and I put another one and same thing.
The next day I grab the multimeter and 208V on the outlet WTF. I open the breaker panel and there was this triple breaker on two of the legs of the breaker it had 120V on the third 210V then I notice that one huge wire that comes from the meter to the bottom of that triple breaker has 210V. :cool2:
I look up and notice that four wires are going in to the meter:cool2:

I rent the place so maybe the guy before me had 3 phase?

Two poles have (The two bars where the breakers are place) are 120V each and the third wire that one has 210V
I don't know. but why is the other wire 210V?
If I buy an air compressor with a three phase motor on it can I run it? is that three phase?

 

[grsthegreat]

A few months ago I wire a 50Amp breaker for my PA-300. I took a 30 amp out so I could fit the 50 amp one,
So this past week I connect the wire that it was on the 30 amp one because I needed power on the outlet and light on the outside of the patio, so I put it on another breaker.
The thing is that when I plug the bench it work fine for a wile and then it burn out. "I bought it used"
that same say at night I plug a light and then it burn after about one hour put another same thing happen and I put another one and same thing.
The next day I grab the multimeter and 208V on the outlet WTF. I open the breaker panel and there was this triple breaker on two of the legs of the breaker it had 120V on the third 210V then I notice that one huge wire that comes from the meter to the bottom of that triple breaker has 210V. :cool2:
I look up and notice that four wires are going in to the meter:cool2:

I rent the place so maybe the guy before me had 3 phase?

Two poles have (The two bars where the breakers are place) are 120V each and the third wire that one has 210V
I don't know. but why is the other wire 210V?
If I buy an air compressor with a three phase motor on it can I run it? is that three phase?

yup..you have a 3 phase high leg system. The middle or B leg will be 208-210 volts. If you want 120 you HAVE to make sure you only use the a or C phase along with a neutral.

If you need 208 volts (cant get 220 on this system) you can use any 2 breaker spots.... AB BC or AC

120 you can ONLY use A or C


you can run any 3 phase equipment. You can also run any 240 volt single phase equipment, although it will only be running at 208 volts. Most if not all 240 equipment will run just fine on 208 volts. In the US were 60 HZ, Canada is 50HZ. I have never had any issues with running 50HZ equipment on our 60HZ systems either....but the inspectors dont like to see it.



The high leg or wild leg 3 phase system is a real pisser when you run into them. There the cheapest 3 phase system to supply, so i see lots of them. I was on one job where a Journeyman electrician didnt check to see if it was a high leg system and landed a bunch of 120 volt on demand water heaters to the B (middle) leg. He burnt out 6 of these units. The guy we were working for at that time had to comp all the repair costs. Glad at that time it wasnt my company.

I identify all these systems with orange tape on the B leg. The new 2011 (2014) codes require extensive panel labeling nowdays.

 

[DXN1EL]

Thank you, Sir:thumbsup:

 

[buickanddeere]

[QUOTE=grsthegreat;3637320 Canada is 50HZ.

That is male bovine recycled hay.

Canada had 25Hz at the Sir Adam Beck 1 plant until the 1990's and a motor-generator converter in London Ontario. All tied to a 25Hz to DC genset to power a DC roller mill at a Hamilton Steel Plant.

 

[grsthegreat]

the motors i see coming into Idaho are plated 50HZ. Ive had to get them replated to say 60HZ to appease the inspectors.

 

[buickanddeere]

50Hz is European equipment.
60Hz is the North American Utility grid. We spin two pole generators at 3600rpm and four pole generators at 1800rpm, trust me I would know.

 

[grsthegreat]

50Hz is European equipment.
60Hz is the North American Utility grid. We spin two pole generators at 3600rpm and four pole generators at 1800rpm, trust me I would know.

well thats cool and all, but then why do i keep getting large 3 phase equipment out of Canada that has name plate ratings that say 50HZ?

 

[buickanddeere]

Cuzz 60Hz Canada and 50Hz England are big time trade partners. 50Hz 220V equipment operates just fine on 60Hz 208V.

Are you still doubting Canada is 60Hz ?

http://en.wikipedia.org/wiki/List_of_countries_with_mains_power_plugs,_voltages_and_frequencies

 

[grsthegreat]

Cuzz 60Hz Canada and 50Hz England are big time trade partners. 50Hz 220V equipment operates just fine on 60Hz 208V.

Are you still doubting Canada is 60Hz ?

not at all, and personally i could care less if it is or isnt.

I just get tired of having to get the Canadian motors on the large shapers and saws i install approved here. These inspectors give me ****. And all this equipment im installing comes out of Canada. thats all im saying

 

[stuckmotor]

50Hz is European equipment.
60Hz is the North American Utility grid. We spin two pole generators at 3600rpm and four pole generators at 1800rpm, trust me I would know.

Buickanddeer,
I think you are correct because I remember reading that Canada uses 60Hz before. I'm fairly new to the group and curious as to why you "would know" I didn't get a clue by checking your profile. Are you an electrician or engineer? No smart ***** attitude intended.