R622 *Use appropriately sized wire. All circuits shall be wired with appropriately sized insulated copper wire (SIGNAL LEVEL cables don’t have to be copper):
Table 8‑4 Breaker and wire sizing
|
Application |
Minimum Wire Size |
|
31 – 40A breaker protected circuit |
12 AWG (13 SWG or 4 mm2) |
|
21 – 30A breaker protected circuit |
14 AWG (16 SWG or 2.5 mm2) |
|
6 – 20A breaker protected circuit |
18 AWG (19 SWG or 1 mm2) |
|
11-20A fuse protected circuit |
|
|
Between the PDP dedicated terminals and the VRM/RPM or PCM/PH |
|
|
Compressor outputs from the PCM/PH |
|
|
Motor power adapter board protected circuit |
22 AWG (22 SWG or 0.5 mm2) |
|
≤5A breaker protected circuit |
|
|
≤10A fuse protected circuit |
|
|
VRM 2A circuits ≤2A fuse protected circuit VH-109 Passthrough per R626 |
24 AWG (24 SWG or .25 mm2) Cat5e/6/7/8 cable, 2 pairs total (1 pair V+, 1 pair ground) |
|
roboRIO PWM port outputs ≤1A fuse protected circuit |
26 AWG (27 SWG or 0.14 mm2) Cat5e/6/7/8 cable, single pair total |
|
SIGNAL LEVEL circuits (i.e. circuits which draw ≤1A continuous and have a source incapable of delivering >1A, including but not limited to roboRIO non-PWM outputs, CAN signals, PCM/PH Solenoid outputs, VRM 500mA outputs, RPM outputs, and Arduino outputs) |
28 AWG (29 SWG or .08 mm2) |
Wires that are recommended by the device manufacturer or originally attached to legal devices are considered part of the device and by default legal. Such wires are exempt from this rule, provided they are powered by the smallest value fuse or breaker which permits proper device operation.
In order to show compliance with these rules, teams should use wire with clearly labeled sizes if possible. If unlabeled wiring is used, teams should be prepared to demonstrate that the wire used meets the requirements of this rule (e.g. wire samples and evidence that they are the required size).
While pure copper wire is recommended, copper-clad aluminum wire is considered copper wire.