[encantotom]

they are so easy to change that i would just wait until one fails. remember 50amps is on each leg. and you have 2 air conditioners on each leg. so you are only at roughly 20amps on each leg with all 4 running. the difference between 9 and 10 amps is negligible in my eyes. difference between meters and eyeballs and the actual draw of the compressor and fan.

those air conditioners can last a long time. ask clarke. he has the originals in his 82.

my two cents worth.

tom