Power source calculation

[beckntrav]

I'm using a pixcon16 with 40 of the led modules below per channel, my total amps per bank looks to be 19.2. Do I really need a circuit on a 20+ amp breaker per bank? I have 4 pixcon16 units. Loaded the same way, my calcs tell me I need 8 circuits on 20 amp breakers? I'm going to need to add a new panel for 8 more circuits.

Led module

.7 watt

12v

= .06 amps per module

40 modules

28 watts

12v

= 2.4 amps

Edited September 15, 2015 by beckntrav

[sticks4legs]

If you are talking adding 120 volt circuits I think you are missing that 2.4 amps at 12 volts is not equivalent to 2.4 amps at 120 volt.

350 watts / 12 volts = 29. 167 amps

350 watts / 120 volts = 2.9167 amps

Edited September 15, 2015 by sticks4legs

[EmmienLightFan]

At 120v that is only 1.92 amps

 

19.2 amps at 12v = 230.4 watts (Amperage x voltage)

 

230.4 watts at 120v = 1.92 amps (Wattage / Voltage)

 

That is one way of working it out. 12v is easy for you at 120v. Just divide the amperage at 12v by 10.

 

A single 20 amp breaker would take all power supplies.

Edited September 15, 2015 by EmmienLightFan

[beckntrav]

Just when I thought i understood the calcuations So to confirm my power consumption, I've attached my "plan". Based on 40 modules per channel, I am pulling 2.4 amps at the channel and 3.84 amps at the wall (2 full banks). Right?

https://drive.google.com/open?id=0B5Ld51VJAof6MVpNZkJDWVNMUzA

Edited September 16, 2015 by beckntrav

[beckntrav]

I'll try to answer my own question.... If I put 320 led modules (12v 0.72 watt) on bank 1, I need a 12v power supply with at least 19.2 amps (plus) to feed that bank. When I put that on a 120v circuit, it will draw 1.92 amps from the circuit.

Correct?