CHAPTER 7 COMPETITOR VEHICLES AND VEHICLE SAFETY EQUIPMENT Appendix 5- Electrical Systems
General
Safety for Competitors and Officials is paramount a. Wiring should be of high quality and suitable to its function. b.
Wiring and systems must be secured and well protected to reduce the risk of fire from electrical short circuits.
1. Batteries 1.1. Wet Auxiliary Batteries should be secured within a nonconductive leak-proof compartment.
1.2. Except for Racing Cars be equipped with battery, generator, self-starter, side, tail, and brake lights. All this equipment to be in normal working order. Exceptionally when taking part in an event held totally off the Public Highway, need not comply with DfT Statutory Requirements regarding lighting or horn.
1.3. Have Auxiliary Batteries duly protected to exclude leakage of acid and to protect terminals from short circuiting and producing sparks.
1.4. If located in the Driver / Passenger compartment, where a Passenger / Co-Driver is present the Auxiliary battery must be situated to the rearwards of the base of the Driver’ s or Passenger / Co- Driver’ s seat and‘ wet’ batteries must be enclosed in a securely located leak-proof container.
1.5. Have the Auxiliary Battery earth lead, if not readily distinguishable, identified by a yellow marking.
1.6. If non lead acid Auxiliary Batteries are used as the main Vehicle battery, they battery pack( s) must carry the appropriate“ EC” and markings and be either a Standard Part or manufactured by an ASN registered manufacturer.
1.7. Except for Electrified Vehicles, the total quantity of recuperated energy stored in the Vehicle must not exceed 200 kJ; this energy may be re-used without exceeding 10 kJ by means of 1kW maximum.
2. Starters
2.1. If required to have a self-starter, be able to demonstrate during the Competition that it is capable of starting the engine.
3. Radio suppression 3.1. Engines must be fitted with effective radio interference suppressors.
4. High Voltage( 60V +)
4.1. With the exception of ignition systems any Vehicle incorporating an electrical system which may run at a voltage exceeding 60V must display the sign detailed in Drawing 1 of this Appendix next to all Competition Numbers.
Drawing 1
5. External Circuit Breaker
5.1. The circuit breaker, when operated, must isolate all electrical circuits with the exception of those that operate fire extinguishers.
Motorsport UK 2025 National Competition Rules Version 11
Chapter 7 Appendix 5- Electrical Systems 263