[EricH]

You could also have a problem with the current running to the Spike. Spikes go on 20A breakers, which don't fit in the 40A slots.

[R43]

All active PD Board branch circuits shall be protected from overload with an appropriate value auto resetting Snap Action circuit breaker. Specifically,

• Each speed controller branch circuit must be protected by one and only one 20-amp, 30-amp, or 40-amp circuit breaker on the PD Board (from the KOP or identical equivalent). No other electrical load can be connected to the breaker supplying this circuit.
• Each relay module branch circuit must be protected with one and only one 20-amp circuit breaker on the PD Board (from the KOP or identical equivalent). No other electrical load can be connected to the breaker supplying this circuit.