Cable Lugs or 1/0 cable
Originally setup to just run a small coffee grinder, we're now trying to pull 70ADC from the batteries to run an induction hotplate. For some reason, these things always seem to get out of hand ......
Forum Discussion
Hay ZEUS!
Cu Al direct connection is dangerous. A fire waiting to happen.
There is a material element sign. Sn it stands for TIN
When aluminum is PLATED with TIN the tin prevents aluminum oxide from forming on the Al Cu interface.
Electricians, worth more than five dollars an hour know how to visually, read that CAREFULLY inspect the Al Cu interface and if the slightest trace of aluminum oxide has formed the termination must be replaced with a new one.
Aluminum oxide is one of the worlds best electrical insulators.
Electrical contractors are so paranoid about this, they insist on using incredibly overpriced COSMOLINE sold as balderdash miracle slop.
Set screw terminations WILL loosen if vibration strikes a nasty chord with heating and cooling.
Squeezing. "Crimping" is the second best way to join copper electrical conductors to copper terminations. Sn Tin is used to delay (NOT PREVENT!) inevitable oxidation of Cu or Sn.
I squeezed 330 MCM terminations then soldered them and used SBC Cable Communications grade triple wall heat shrink tubing over pure lead coating on the copper lugs. 316 stainless bolts, nuts, and fasteners were used to attach the TWO HOLE 350 MCM terminations to the cell flag connectors. 22-years later they are like brand new. Corrosion sealant was used. The T&B terminations were insanely expensive even 22 years ago. The terminations will outlive the batteries and consume 0.000% maintenance time or expense over a 30 year period. I have a strong fetish against the demand of surprise emergency "re-work".
Cu Al direct connection is dangerous. A fire waiting to happen.
There is a material element sign. Sn it stands for TIN
When aluminum is PLATED with TIN the tin prevents aluminum oxide from forming on the Al Cu interface.
Electricians, worth more than five dollars an hour know how to visually, read that CAREFULLY inspect the Al Cu interface and if the slightest trace of aluminum oxide has formed the termination must be replaced with a new one.
Aluminum oxide is one of the worlds best electrical insulators.
Electrical contractors are so paranoid about this, they insist on using incredibly overpriced COSMOLINE sold as balderdash miracle slop.
Set screw terminations WILL loosen if vibration strikes a nasty chord with heating and cooling.
Squeezing. "Crimping" is the second best way to join copper electrical conductors to copper terminations. Sn Tin is used to delay (NOT PREVENT!) inevitable oxidation of Cu or Sn.
I squeezed 330 MCM terminations then soldered them and used SBC Cable Communications grade triple wall heat shrink tubing over pure lead coating on the copper lugs. 316 stainless bolts, nuts, and fasteners were used to attach the TWO HOLE 350 MCM terminations to the cell flag connectors. 22-years later they are like brand new. Corrosion sealant was used. The T&B terminations were insanely expensive even 22 years ago. The terminations will outlive the batteries and consume 0.000% maintenance time or expense over a 30 year period. I have a strong fetish against the demand of surprise emergency "re-work".
