Author Topic: 240v 175w MV ballast  (Read 1072 times)
GE PM
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240v 175w MV ballast « on: May 04, 2023, 11:04:37 AM » Author: GE PM
Does anyone know how to wire a 240v 175w MV ballast?
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funkybulb
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Re: 240v 175w MV ballast « Reply #1 on: May 04, 2023, 01:35:25 PM » Author: funkybulb
 It should not wire up any different than a  120 volt MV ballast
 Unless it a choke style ballast
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BT25
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Re: 240v 175w MV ballast « Reply #2 on: May 04, 2023, 04:19:44 PM » Author: BT25
Does anyone know how to wire a 240v 175w MV ballast?

Got a picture?
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Re: 240v 175w MV ballast « Reply #3 on: May 04, 2023, 06:25:13 PM » Author: GE PM
Here is how i think it is supposed to be wired.
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BT25
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Re: 240v 175w MV ballast « Reply #4 on: May 04, 2023, 06:57:04 PM » Author: BT25
Hmmm...usually, a 240V MV ballast is just a reactor with one primary lead, and one secondary lead. The attached PDF shows a type of single voltage ballast. A picture would be best, that way we can see what you're working on and can go from there.
One question: how many coils does the ballast have?
« Last Edit: May 04, 2023, 06:59:11 PM by BT25 » Logged

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Re: 240v 175w MV ballast « Reply #5 on: May 04, 2023, 09:38:19 PM » Author: joseph_125
That PDF is his MS paint modification of the drawing I originally uploaded here for a M-250R2 built to CP&L specs (240v ballast, 120v PC) for an 250w HPS CWA circuit. Unfortunately he didn't relocate the capacitor to where it should be on a 240v reactor ballast, in parallel with the circuit between L1 and L2 instead of between the lamp.

The easiest way would be to include a clear picture of what you're working with instead of asking a fairly general question with no pictures. Much easier for others to give advice without having to make assumptions. 
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Re: 240v 175w MV ballast « Reply #6 on: May 06, 2023, 04:43:11 PM » Author: GE PM
ok, i will try to take a picture of the ballast this weekend.
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