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marc8

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Jun 10, 2012
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installed a tub for m8 (second hand).

switch on tub runs for about 10 seconds then trips.

clamped up draw initially 3.3A -12.2A when heater kicks in.

disconnected heater unit IR test 400M ohms, 23 ohms heater resistance.

disconnect pump one hot tub will stay on, disconnect heater & leave pump one on hot tub will run but did trip once after about 20 mins.

pump one
checked capacitors 16m farad good, 40m farad good. checked windings brown to blue 11.08 ohms, black to blue 11.10 ohms. IR test to earth 400M ohms.

disconnect plugs for ozone still trips, blower still trips & light still trips.

my findings hot tub turns on timer runs down pump one starts draw around 3amps heater kicks in around 12amps then trips after about 2-3 seconds later thinking I have a earth fault under load or am I missing something ?
 
looked okay no signs of water damage any location, the testing & running of the heater was also taken remove from any other part of the circuit so just the heater in use.
 

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