How many BEC's to run?

[48thFleet]

My current build is using two 8 channel receivers, one with telemetry. I am driving 12 servos which have an average draw of 150ma and stall at 2000ma. I am also running 5 ESC's of various capacity. Being a surface craft, it will have a run time of several hours. My plan is to use UBEC 10 amp/20A surge BEC(s). My plan is to use one BEC powering each receiver, rather than putting the load all on one.
The two BEC's will share batteries source(s). All motors, and accessories will share a common power supply(s).
My question is whether using multiple BEC's will cause any kind of an electrical loop(ground loop?) that might interfere with the radio, ect? Do I need to common ground the receivers?
I am a plug and play engineer( which means I know squat).
Thanks.

 

[Konrad]

Castle Creations warns against parallel BEC with their switching BECs.

Yes to using using a common ground.

Hours of use at a time? This is going to drive the discussion into duty cycle and heat shedding ability.

What is the input voltage to the BEC and what is the output voltage of the BEC?

 

[48thFleet]

Castle Creations warns against parallel BEC with their switching BECs.

Yes to using using a common ground.

Hours of use at a time? This is going to drive the discussion into duty cycle and heat shedding ability.

What is the input voltage to the BEC and what is the output voltage of the BEC?

Hi Konrad,
The input voltage is 12v, the output is set to 6v.
The duty cycle is what concerns me the most which is why I am shying away from using one BEC for such and extended period of time. My logic( however faulty it may be) is that if I were to split the BEC load, the duty cycle would be extended and I would be less inclined to max out the BEC's capabilities.
Thanks for the reply.

 

[48thFleet]

I should also identify my UBEC better. It is the Hobbywing 10a/20a that Aloft has sold.

 

[Konrad]

Splitting (isolating) the load between BECs is a good idea.

 

[Haoyang Wang]

Make sure the ESCs do not have built-in BECs. If they do, disconnect the red wires between the ESCs and the receivers.

 

[48thFleet]

"Make sure the ESCs do not have built-in BECs. If they do, disconnect the red wires between the ESCs and the receivers."
Yes,
Thank you, I do that, as my ESC's do have BEC's.