.

.

Results 1 to 4 of 4

Thread: Mains power, importance of

  1. #1
    Join Date
    Jan 2008
    Location
    mechanicsville Virginia
    Posts
    364

    Mains power, importance of

    For good racing up through X12 motors using 2, 90 amp Bulldog supplies. Is a dedicated mains circuit essential? Does each supply need a dedicated mains circuit?

    Would batteries solve the issue of a non dedicated 20 amp main? (how much other stuff is on the circuit? don't know)

    Are multi farad capacitors worth the money and, if so, what sort of turn-on inrush protection is used?

    calling all track power experts
    Anything worth doing is worth overdoing

  2. #2
    Join Date
    Jun 2002
    Location
    St Charles, Illinois, USA
    Posts
    2,299
    Not clear what you define 'mains circuit' - is it the circuit breaker/ fuse or what?
    Convention I have always used is a 40 amp circuit breaker and relay for each lane from a buss bar for the common source of all power sources if using multiples like Bulldog or battery.
    A common capacitor only provides a boost to the car that launches first, which is why EACH lane on a drag strip should be individually sourced to be fair.
    Last edited by Ramcatlarry; 03-12-2018 at 08:36 PM.
    l.d. kelley, M.A. Ramcatlarry@aol.com

    50 year pin 1959-2009
    Racing slot cars in America
    USRA 2009 member 0028, 2017 #404
    IRRA, ISRA/USA, Hardbodies 1/24 & 1/32
    retired raceway owner(for now)
    Omni/Cidex service center

  3. #3
    Join Date
    Jan 2008
    Location
    mechanicsville Virginia
    Posts
    364
    The AC power circuit feeding the supplies. I'm going to be doing some work on a track power setup. But the supplies will not have a dedicated power circuit. I'm afraid there will still be power issues.

    I'm wondering if I should push for batteries or a dedicated power circuit.
    Anything worth doing is worth overdoing

  4. #4
    Join Date
    Jun 2002
    Location
    St Charles, Illinois, USA
    Posts
    2,299
    Most current building codes limit if not forbid open auto batteries in a commercial retail location. The use of extension cords and power strip is limited in some communities.

    The typical Bulldog style power supply is normally plugged into the 15 - 20 amp circuit either on a power conduit ceiling drop or wall outlet. A metal floor covering can house that wiring safer than an extension cord if in a walkway. Bulldog style are actually RV battery maintainers from trailers/motorhomes. No extra battery chargers needed. I had four 90 amp bulldogs under my 2006 ISRA Nats track with switches to turn them on in pairs all going to an output buss bar. Only had all four on for Eurosport events. Every power supply is labeled for input amperage needs.

    If you go with the popular 'server supplies' you will likely need a 220 volt circuit on a 20 amp or more wall breaker.
    Last edited by Ramcatlarry; 03-12-2018 at 08:39 PM.
    l.d. kelley, M.A. Ramcatlarry@aol.com

    50 year pin 1959-2009
    Racing slot cars in America
    USRA 2009 member 0028, 2017 #404
    IRRA, ISRA/USA, Hardbodies 1/24 & 1/32
    retired raceway owner(for now)
    Omni/Cidex service center

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •