Snip stuff.
Your 20 ohm 300 watt resistors in series will be 40 ohms at 300 watts. If you parallel them, you will have 10 ohms at 600 watts.......Paul
5HP 230v drive brake resistors
Oct 23, 2012
29 Replies
Uh, no... each discrete resistor can dissipate its rated power whether in series or parallel... 600 watts either way, just 10 or 40 ohms parallel or series...
Carla
Electile Dysfunction : the inability to become aroused over any of the choices for president put forth by either party in the election.
Can I blame a brain fart? Blush....Paul
Ayup. I posted a link on ebay to the exact same product a number of CNC manufactures use on their machines..but nope...gonna do it the wrong way.
Shrug
Gunner
watts refer to power dissipation ability, it does not matter if they are series or paralleled, they still can dissipate 600 watts.
i
not talking series and parallel here, the 300 watt rating may or may not not be what you expect, although it probably doesn't matter for this application.
ohmite for example uses enron math in calculating power ratings for their stuff.
Correct.
If they are ANYWHERE near flash, you are doing something wrong.
And if that worried, buy a gallon of silicon such as DOT-5 brake fluid with a 400F flash point
Or use a bigger braking resistor:
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