classic controller 150 that displays more PV power amp or intensity

[bafaro]

I do not quite understand what you mean here.

[grgdgreek]

The blue cable that looks like a phone jack that goes to sense the battery temperature... :-) 
Looks melted from the picture you posted
George

[BobWhite]

The blue cable that looks like a phone jack that goes to sense the battery temperature... :-) 
Looks melted from the picture you posted
George

it got soft for sure from the heat, I would replace it!
Walt

[Vic]

There has been several things that have been curious about the photo in reply #6;

The screw for the Bat + terminal must be a replacement.  There seems to be rust on that screw,  and perhaps on the lower part of that terminal.

And,  what is that Aluminum dust-looking material on the blue terminal block,  toward the bat --,  and PV terminals?

Was water sprayed on the Classic during the overheating event?
In what type of environment was this Classic operating?

There are terminal Torque specifications that must be followed for safety reasons.

In lieu of the appropriate tool to measure terminal torque,  tighten all electrical cable terminal connections tight,  wait about 24 hours and re-torque.  The larger the terminal clamp screw,  and cable being used,  the greater is the required torque.

It is a good idea to check the torque of all screw terminal cable connections after about one month after installation,  and then annually (IMO).

Did just look for Classic Battery/PV Terminal block torque specs,  but could not find them in the Manual,  OR in an e-Panel Manual ...  may be vision impaired,  and passed over the spec.

In the absence of any specific specification for the Classic terminal block torque spec,  the following Busbar & Breaker Torque Table would probably be better than nothing:
http://www.midnitesolar.com/pdfs/torque_values.pdf

Thanks bafaro for any added info about the screw on the Bat + terminal,  etc
FWIW,  Vic

[BobWhite]

MNGP display is normal, communication with the localstatuspanel is correct. I will make a picture to send but somehow attach the photo.
Thanks
Bafaro

There has been several things that have been curious about the photo in reply #6;

The screw for the Bat + terminal must be a replacement.  There seems to be rust on that screw,  and perhaps on the lower part of that terminal.

And,  what is that Aluminum dust-looking material on the blue terminal block,  toward the bat --,  and PV terminals?

Was water sprayed on the Classic during the overheating event?
In what type of environment was this Classic operating?

There are terminal Torque specifications that must be followed for safety reasons.

In lieu of the appropriate tool to measure terminal torque,  tighten all electrical cable terminal connections tight,  wait about 24 hours and re-torque.  The larger the terminal clamp screw,  and cable being used,  the greater is the required torque.

It is a good idea to check the torque of all screw terminal cable connections after about one month after installation,  and then annually (IMO).

Did just look for Classic Battery/PV Terminal block torque specs,  but could not find them in the Manual,  OR in an e-Panel Manual ...  may be vision impaired,  and passed over the spec.

#10 AWG 25 to 35 inch pounds
#8 AWG 30 to 40 inch pounds
#6 AWG 40 to 50 inch pounds
Page 24 at the bottom

In the absence of any specific specification for the Classic terminal block torque spec,  the following Busbar & Breaker Torque Table would probably be better than nothing:
http://www.midnitesolar.com/pdfs/torque_values.pdf

Thanks bafaro for any added info about the screw on the Bat + terminal,  etc
FWIW,  Vic

I'm with you vic,two maybe three screws were replaced for unknown reason but bafaro can bring us up to speed on that. Maybe the screws wouldn't torque down properly as I think I see the heads of the screws mared a bit.
Walt

[Vic]

Hi BobWhite,

Thank You for posting this data from the 2056 version of the Classic Manual,
"#10 AWG 25 to 35 inch pounds
#8 AWG 30 to 40 inch pounds
#6 AWG 40 to 50 inch pounds
Page 24 at the bottom"

Thanks Bob,  must of blown right past that data,  and was using that same manual .pdf,  at that.

Thanks again,   Vic

[BobWhite]

no problem Vic, I try to contribute when I can. 

[bafaro]

screw the battery + terminal is indeed original screws, it was burned during the incident. the burn mark is only at the positive terminal. when I unplugged the classic poster on the MNGP the voltage of the battery bank which means its operation is not it?
I just presented three other replacement screws for other terminals (bat-, pv + and PV-) since the original screws were lost during my various tests.

Thanks
Bafaro

[Resthome]

Hi BobWhite,

Thank You for posting this data from the 2056 version of the Classic Manual,
"#10 AWG 25 to 35 inch pounds
#8 AWG 30 to 40 inch pounds
#6 AWG 40 to 50 inch pounds
Page 24 at the bottom"

Thanks Bob,  must of blown right past that data,  and was using that same manual .pdf,  at that.

Thanks again,   Vic

Well I have a snap-on torque screwdriver (with NIST certificate) and I can tell you anything over 35 inch pounds is going to start twisting the heads off those terminal block screws. Especially 40-50 in pounds. Has anyone ever tried to put 40-50 inch-pounds on those screw heads?

[BobWhite]

[/quote]

Well I have a snap-on torque screwdriver (with NIST certificate) and I can tell you anything over 35 inch pounds is going to start twisting the heads off those terminal block screws. Especially 40-50 in pounds. Has anyone ever tried to put 40-50 inch-pounds on those screw heads?
[/quote]

John, most of my torque wrenches/drivers are snap on and calibrated/certified at least every other year as my lively hood depends on accuracy. personally I have torqued them down to 45 inch pounds with a model TQ-12-B snap on torqometer serial #75418 without any issue. I do feel control of your tools are important but also know the frustration of slipping. If the screw galls it will never torque down properly. Just  a few thoughts not criticizing!

Walt

[Vic]

Hi John,

I DO have calibrated drivers for torqueing screws,  but have not ever used any of them on CCs,   breakers  or terminal blocks.  Just torque them TIGHT first,  and re-torque them twice again before use ...  has always worked fine.

And bafaro,  if that Battery + screw is original,  it must have been modified,  perhaps due to heat damage,  as it has a slot in it ...  perhaps in that photo in Reply #6,  the original screw had been replaced.  None of the screws in the Classics here,  look like that.

bafaro,  still that Bat + screw looks RUSTED   Wonder what happened with it to create that Iron oxide RUST look on the screw ??

AND,  there appears to be some metallic dust on the blue terminal block on the Bat --,  near  the PV + & -- screws,   what do you think that is,  or is from ??

Thanks for any added detail,   Vic

[Vic]

John, most of my torque wrenches/drivers are snap on and calibrated/certified at least every other year as my lively hood depends on accuracy. personally I have torqued them down to 45 inch pounds with a model TQ-12-B snap on torqometer serial #75418 without any issue. I do feel control of your tools are important but also know the frustration of slipping. If the screw galls it will never torque down properly. Just  a few thoughts not criticizing!
Walt

Sure do prefer the Terminal blocks with the Allen Socket head screws  --  very positive!

FWIW,  Vic

[BobWhite]

[/quote]

Sure do prefer the Terminal blocks with the Allen Socket head screws  --  very positive!

FWIW,  Vic
[/quote]

Vic I love your thinking and the Allen socket set screw can easily replace the original screws.

Walt

[Resthome]

John, most of my torque wrenches/drivers are snap on and calibrated/certified at least every other year as my lively hood depends on accuracy. personally I have torqued them down to 45 inch pounds with a model TQ-12-B snap on torqometer serial #75418 without any issue. I do feel control of your tools are important but also know the frustration of slipping. If the screw galls it will never torque down properly. Just  a few thoughts not criticizing!
Walt

Sure do prefer the Terminal blocks with the Allen Socket head screws  --  very positive!

FWIW,  Vic

Very good idea, Vic..!!

You seem to indicate yours are not slotted.  Mine are slotted and they have vary little material on the edge of the slots.

[grgdgreek]

John, most of my torque wrenches/drivers are snap on and calibrated/certified at least every other year as my lively hood depends on accuracy. personally I have torqued them down to 45 inch pounds with a model TQ-12-B snap on torqometer serial #75418 without any issue. I do feel control of your tools are important but also know the frustration of slipping. If the screw galls it will never torque down properly. Just  a few thoughts not criticizing!
Walt

Sure do prefer the Terminal blocks with the Allen Socket head screws  --  very positive!
+1
FWIW,  Vic