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J R Hollingsworth MEP-005A conversion

Rekabnivek

New member
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Chatham VA
In the reconnecting board? There's another way that makes it easier to revert. Either way that will need rewired to make it zig zag. You also need to know where the AVR source is. If tapped incorrectly you will get some really weird voltages
Yes I meant the reconnecting board. Intrigued in another way, but once I get this set on a concrete pad, I don't think I would ever really want to revert back to 3 ph. What would I need to look for the AVR source? Would the weird voltage readings be on the control vot meter or at the output connection lugs?
 

Rekabnivek

New member
19
7
3
Location
Chatham VA
There's the option of a boost transformer for just the well pump.
Yes I could use a boost transformer but that would be one more piece in the puzzle that I would have to keep up with. Triple Jim: I see you are from NC, small world I am in south central VA. I would love to contact you and pick you brain about these gens.
 

Scoobyshep

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Location
Florida
Yes I meant the reconnecting board. Intrigued in another way, but once I get this set on a concrete pad, I don't think I would ever really want to revert back to 3 ph. What would I need to look for the AVR source? Would the weird voltage readings be on the control vot meter or at the output connection lugs?
I did this on my 004 and on a friend's 005. Instead of cutting the neutral buss I moved wires to perform the change (I can look back at my notes to get the exact moves). Electrically it's the same , I found it to be less cumbersome.

The ave needs to reference the right points. If it's looking at l1 to l2 in a zig zag it will see some bastard voltage and try to keep that at 240
 

Rekabnivek

New member
19
7
3
Location
Chatham VA
I did this on my 004 and on a friend's 005. Instead of cutting the neutral buss I moved wires to perform the change (I can look back at my notes to get the exact moves). Electrically it's the same , I found it to be less cumbersome.

The ave needs to reference the right points. If it's looking at l1 to l2 in a zig zag it will see some bastard voltage and try to keep that at 240
Ok I get moving to wires and not doing permanent damage to the neutral buss. Smart thinking If you find your notes please post the moves for me. Where should the AVR be connected in the zig zag? L1 and L3 since that is where I would connect the leads for the output to the transfer switch?
 

Scoobyshep

Well-known member
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Location
Florida
Ok I get moving to wires and not doing permanent damage to the neutral buss. Smart thinking If you find your notes please post the moves for me. Where should the AVR be connected in the zig zag? L1 and L3 since that is where I would connect the leads for the output to the transfer switch?
If the AVR is setup for 240 volt yes
 

Rekabnivek

New member
19
7
3
Location
Chatham VA
I did this on my 004 and on a friend's 005. Instead of cutting the neutral buss I moved wires to perform the change (I can look back at my notes to get the exact moves). Electrically it's the same , I found it to be less cumbersome.

The ave needs to reference the right points. If it's looking at l1 to l2 in a zig zag it will see some bastard voltage and try to keep that at 240
Just went out and had a look at the reconnecting board. Actually unbolted all 12 nuts tontrmove the board and there is no neutral buss between locations 10, 11, 12, and the far left nut which has a wire running to L0. What if anything does that tell anyone? Could this have been done when the McPherson AVR was installed?
 

Scoobyshep

Well-known member
1,287
1,911
113
Location
Florida
Just went out and had a look at the reconnecting board. Actually unbolted all 12 nuts tontrmove the board and there is no neutral buss between locations 10, 11, 12, and the far left nut which has a wire running to L0. What if anything does that tell anyone? Could this have been done when the McPherson AVR was installed?
10 11 12 is the center of the star which is your neutral which should be run to the lo lug
 

hrbergeron

Well-known member
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Geographical Center of Virginia
I saw that generator for sale on FB marketplace for a while, it was only about 1.5 hours from me. While the price and hours were low, they sure did a number on that electrical system. I doubt you will be able to convert without issue to single phase due to the modified voltage regulator and overcurrent sensors. It also looks like they heavily modified or removed the safety systems on there. They even disconnected/removed the wiring from the overspeed switch sensor. It doesn't look like your overload wires are connected either. Looks like a huge safety hazard waiting to happen.

FYI this is coming from a guy who has owned/serviced/converted dozens of 004/005 generators.

(Also have (2) 005 generators for sale currently ;))
 

Scoobyshep

Well-known member
1,287
1,911
113
Location
Florida
I saw that generator for sale on FB marketplace for a while, it was only about 1.5 hours from me. While the price and hours were low, they sure did a number on that electrical system. I doubt you will be able to convert without issue to single phase due to the modified voltage regulator and overcurrent sensors. It also looks like they heavily modified or removed the safety systems on there. They even disconnected/removed the wiring from the overspeed switch sensor. It doesn't look like your overload wires are connected either. Looks like a huge safety hazard waiting to happen.

FYI this is coming from a guy who has owned/serviced/converted dozens of 004/005 generators.

(Also have (2) 005 generators for sale currently ;))
Yeah. It's a mess for sure, I am working with him to get it running safely.

Sent from my SM-S908U using Tapatalk
 

hrbergeron

Well-known member
Steel Soldiers Supporter
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405
63
Location
Geographical Center of Virginia
I understand the price was definitely a motivator, but do you really want/need a 30kw? I don't know what size house you have, but most houses only need a 10-15kw and have a low kw resting pull. If you do not have constant load around 10kw(ish) on it you are going to have wet-stacking issues.
 
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