For the Power Cab Starter Set you need to use something that has a 2 amp rating or lower.
ALL other boosters and command stations can use the CP6 or the EB1.
*** Note - If you have a Power Cab and an SB5 Smartbooster remember that the booster is now what is running trains NOT the Power Cab.
The SB3 and DCC Twin are 3 amps and can use the CP6 or the EB1.
The SB3a, SB5, and all Power Pro systems are 5 amps and can use the CP6 or the EB1.
You MUST use some form of Protection!
To clarify: You would use either the CP6 or the EB1 but not both. The CP6 is used with the Power Cab and provides basic current limiting protection of 1 amp per section for 6 areas. The EB1 is a single power district electronic breaker that can be configured via CV values.
Short circuit protection is done different internally between the two systems. This is due to the construction of the power supplies in the Power Cab and the PH Pro. The EB1 has no current limit protection and is a single block item. It will draw the full current capacity of the booster if dead short.
The CP6 is a current limiting device. A full 2 amps in from Power Cab, the output is 6 one amp power districts with current limiting. Bulbs are in series with load. CP6 will not make Power Cab reboot. It will allow 1 amp to pass thru, the rest of load (up to 12 amps) will burn off as heat / light. Multiple sections of a CP6 can be used in parallel to create larger limits.