Question for electric fan fans

Discussion in 'Sparky's corner' started by 12lives, Sep 8, 2023.

  1. 12lives

    12lives Control the controllable, let the rest go

    I'm working on my wiring plan and discovered my Spal fans pull 60 amps on start up (for about 1/2 a second) but run 15 amps continuous. I want to use a 20 or 30 amp circuit breaker to protect everything but wonder if I will have issues tripping the breaker due to the start up current flow. What say you?
  2. 87GN_70GS

    87GN_70GS Well-Known Member

    It should be ok. Breakers work on heating, so a quick inrush of current would probably not be of sufficient duration to allow significant heating and cause it to trip
    12lives likes this.
  3. TrunkMonkey

    TrunkMonkey Well-Known Member

    You can use a pair of Aharon Time Delay Relay 10 Seconds 5 pin 12V 30A.
    Then the fans will not spike 60 AMPs at the same time you are engaging starter.
    Especially when the car is hot.

    I have dual Spal S2130 fans on both my Skylarks.
    12lives likes this.
  4. philbquick

    philbquick Founders Club Member

    I know this is slightly off topic, but, fans are 30% more efficient pulling than pushing. I not sure why you need electric fans, but it's better to mount them behind the radiator if you have the choice.
    12lives and TrunkMonkey like this.
  5. Guy Parquette

    Guy Parquette Platinum Level Contributor

    did not know this. Great information.
  6. 12lives

    12lives Control the controllable, let the rest go

    Thanks guys - I like the time delay relay! Also, another reason to do a puller is because when the fan is behind the radiator you can use a shroud more effectively.
    TrunkMonkey likes this.

Share This Page