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Old 08-29-2011, 09:06 PM   #16
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3 phase panels and sub panels


120/208 WYE does NOT have a high leg.

should read

120V ABC to Neutral
120V ABC to Ground
208V A to B
208V A to C
208V B to C


if you have 120/240V Delta service this DOES have a high leg

should read

120V AC(or AB) to Neutral
120V AC(or AB) to Ground
208V B(or C) to Neutral
240V A to B
240V A to C
240V B to C

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Old 08-30-2011, 08:48 AM   #17
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any two hots are 215 and any hot and neutral are 123. i dont understand what you mean AC{OR AB} to neutral. do you mean for me to to simultaneously read two hots and the neutral also there really is no ground bar
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Old 08-30-2011, 09:01 AM   #18
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two pole breakers have been used to pull 220 and three pole breakers have been used for sub panels and AC unit. i dont understand what was meant about how very differently a sub panel is run is that because im not 207 and mine is run straight forward? honestly after months of poking around i thoughti had a decent handle on this system but a couple hours on here and im all confused.any one licenced or an enginerer
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Old 08-30-2011, 10:06 AM   #19
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The A, B, and C are merely referring to the three legs of power. Phase A, Phase B, and Phase C.
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Old 08-30-2011, 11:11 AM   #20
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yes i realize that but techy in the bottom of his post states
120V AC(or AB) to Neutral
120V AC(or AB) to Ground
208V B(or C) to Neutral
which implies that he is taking a reading from two hot legs simultaneously and a neutral or ground ACN, ABN ACG, ABG and that there would be some ...... whatever imno electrician but it makes no sense why doesnt someone assume i can understand this and just give me the big pictue ive wired several houses built a hydroelectric system to power another home etc etc
been in heavy construction 30 years
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Old 08-30-2011, 11:28 AM   #21
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and ive poted a couple tims the readings any two hots are 215 and any hot and neutral are 123. i dont understand what you mean AC{OR AB} to neutral. do you mean for me to to simultaneously read two hots and the neutral also there really is no ground bar
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Old 08-30-2011, 11:29 AM   #22
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Quote:
Originally Posted by michael825 View Post
yes i realize that but techy in the bottom of his post states
120V AC(or AB) to Neutral
120V AC(or AB) to Ground
208V B(or C) to Neutral
which implies that he is taking a reading from two hot legs simultaneously and a neutral or ground ACN, ABN ACG, ABG and that there would be some ...... whatever imno electrician but it makes no sense why doesnt someone assume i can understand this and just give me the big pictue ive wired several houses built a hydroelectric system to power another home etc etc
been in heavy construction 30 years
Please don't try to put one probe of your meter across two hot legs! He's talking about the junction of A and B phase (if you have a delta service, which you don't). If you picture a triangle with sides labelled A,B,C, then the junction of sides AB, AC, etc.
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Old 08-30-2011, 11:34 AM   #23
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Quote:
Originally Posted by michael825 View Post
and ive poted a couple tims the readings any two hots are 215 and any hot and neutral are 123. i dont understand what you mean AC{OR AB} to neutral. do you mean for me to to simultaneously read two hots and the neutral also there really is no ground bar
A or C, or A or B to neutral depending on whether you have wye or delta power.
From your readings it appears you have 208/120 wye power.
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Old 08-30-2011, 12:29 PM   #24
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IN my location a landlord can not do any electrical work, even if he lives in another part of the house.

All electrical work on rental property must be done by a licensed electricitan.

You might want to check your location also.
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Old 08-30-2011, 01:16 PM   #25
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JBAN well if i wanted to live in a nanny state id move to CA but i live in a state where i can work on my 1-3 family home and why would you post a statement like that on a website called do it yourself? this house has almost burned down several times from he licenced to steal electricians. licences and knowledge are not the same thing. it might be liklier someone who has gone to the effort learned his trade but not always personally i think we should eliminate licence monopoly and do rigorous inspections. beleive me by the time i do this work i will know what im doing and do a far above average job and save thirty thousand dollars.

A7Ecorsair are you a pilot also? listen now you are repeating the terminology off TECHY so i am still confused none of you answer the question i ask to clarify it. you both couple together AB and neutral then AC and neutral whicj is confusing for two reasons you dont clarify, the first is you seem to be saying that i take a reading from three legs at once A and B and NEUTRAL, and A and C and NEUTRAL which i have never heard done its also confusing because it leaves out the third possible combination on C and B and NEUTRAL, furthermore you all seem to ignore the readings I have postted which again are from any single hot leg red blue black to any other always gives me 223 volts and a reading from any single hot leg red blue black and the neutral always reads 115 volts.
it seems like you say this is imposible that i must have a higher leg i dont. and as i said the panels and subs seem t be wired in a simple 3 pole system and pull single pole breakers 2 pole 220 breakers and 3 pole breakers to a 3 pole subpanel could this be 3 pole and not 3 phase?
i am aware of delta systems i have an old army generator like that and i know some locals even use 4 5 even 6 hot wire systems so perhaps.

Last edited by michael825; 08-30-2011 at 01:19 PM. Reason: mistake
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Old 08-30-2011, 01:31 PM   #26
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Quote:
Originally Posted by michael825 View Post
JBAN well if i wanted to live in a nanny state id move to CA but i live in a state where i can work on my 1-3 family home and why would you post a statement like that on a website called do it yourself? this house has almost burned down several times from he licenced to steal electricians. licences and knowledge are not the same thing. it might be liklier someone who has gone to the effort learned his trade but not always personally i think we should eliminate licence monopoly and do rigorous inspections. beleive me by the time i do this work i will know what im doing and do a far above average job and save thirty thousand dollars.

A7Ecorsair are you a pilot also? listen now you are repeating the terminology off TECHY so i am still confused none of you answer the question i ask to clarify it. you both couple together AB and neutral then AC and neutral whicj is confusing for two reasons you dont clarify, the first is you seem to be saying that i take a reading from three legs at once A and B and NEUTRAL, and A and C and NEUTRAL which i have never heard done its also confusing because it leaves out the third possible combination on C and B and NEUTRAL, furthermore you all seem to ignore the readings I have postted which again are from any single hot leg red blue black to any other always gives me 223 volts and a reading from any single hot leg red blue black and the neutral always reads 115 volts.
it seems like you say this is imposible that i must have a higher leg i dont. and as i said the panels and subs seem t be wired in a simple 3 pole system and pull single pole breakers 2 pole 220 breakers and 3 pole breakers to a 3 pole subpanel could this be 3 pole and not 3 phase?
i am aware of delta systems i have an old army generator like that and i know some locals even use 4 5 even 6 hot wire systems so perhaps.
Here's a couple of pictures to help you out. It may say 220V on the breaker. That's the rating of the breaker not necessarily the voltage on it.
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Old 08-30-2011, 02:48 PM   #27
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the high leg is supposed to be 'B', but in older installations it is sometimes 'C'.


when i said 120V AC(or AB) to Neutral, i mean a to neutral and C to neutral(if the high leg was B), or A to neutral and B to neutral(if the high leg was 'C') should all read 120v


you appear to have 120/208v WYE


you do not have a high leg
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Old 08-30-2011, 03:02 PM   #28
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The picture in posting #26 will clear everything up about phase lettering.
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Old 08-30-2011, 05:15 PM   #29
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Quote:
Originally Posted by michael825 View Post
JBAN well if i wanted to live in a nanny state id move to CA but i live in a state where i can work on my 1-3 family home and why would you post a statement like that on a website called do it yourself? this house has almost burned down several times from he licenced to steal electricians. licences and knowledge are not the same thing. it might be liklier someone who has gone to the effort learned his trade but not always personally i think we should eliminate licence monopoly and do rigorous inspections. beleive me by the time i do this work i will know what im doing and do a far above average job and save thirty thousand dollars.

A7Ecorsair are you a pilot also? listen now you are repeating the terminology off TECHY so i am still confused none of you answer the question i ask to clarify it. you both couple together AB and neutral then AC and neutral whicj is confusing for two reasons you dont clarify, the first is you seem to be saying that i take a reading from three legs at once A and B and NEUTRAL, and A and C and NEUTRAL which i have never heard done its also confusing because it leaves out the third possible combination on C and B and NEUTRAL, furthermore you all seem to ignore the readings I have postted which again are from any single hot leg red blue black to any other always gives me 223 volts and a reading from any single hot leg red blue black and the neutral always reads 115 volts.
it seems like you say this is imposible that i must have a higher leg i dont. and as i said the panels and subs seem t be wired in a simple 3 pole system and pull single pole breakers 2 pole 220 breakers and 3 pole breakers to a 3 pole subpanel could this be 3 pole and not 3 phase?
i am aware of delta systems i have an old army generator like that and i know some locals even use 4 5 even 6 hot wire systems so perhaps.
Yeah, I can tell you know what you are doing!!!!!

A rule to require work by licensed contractors protect tennets fro unknowing and unskilled landlords.

I state this anytime I see some wanna be landlord try to put his tennets in danger.

3 phase is far out of the realm of a diy'er.

Some electricians, and MANY diy'ers do not understand 3 phase.

So good luck with your project, invest the 30 k savings into an insurance policy, because if something goes wrong you will need it.
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Old 08-30-2011, 08:33 PM   #30
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thanks charlie but what im looking at is simply three hot legs coming into the bottom of panel to three separate busses and neutral going up to the neutral bar up top. im pretty sure its a 208 y system but i can see this is not the best way to research something like this. thanks anyway guys.
yes jbfan im aware electricity is dangerous and someone who doesnt know better might easily take some of these suggestions i got as an invitation to arc across two hots and a neutral- fortunately i know what that would do. so to any novice reading this thread in future dont ever let two hots connect particularly 3phase you get vaporized not a reading. what i think these pros are explaining is the ultimate return path so to speak.
i did not say i knew what i was doing i said i would eventually and i will. theres nothing i have ever failed to figure out.and promise i wont put myself or my tenants at risk. but if you are not comfortable helping DIYs its a free country log off and jam out to jimmy buffet like "Pirate"

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