hobbsies
Active Member
Let me preface by saying I'm studying for the ETCP Lx exam and I made up this question.
I want to calculate how much power I will use/need for this system.
Say I have this inventory in my rig:
24 Mac 2ks at 1200w each requiring 208v
48 575w S4 LEKOs on 120v
200A 3phase service
24 way 208 distro
48 2.4k dimmer rack
Assuming power factor = 1
The 24way distro will use 1200w/208v/1.732= 3.33A*8 = 26.64A/phase.
The dimmer rack will use 575w/120v*16=76.67A/phase
Do I need to be factoring in the phase offset for the dimmer rack too? Or is it safe to to say that I'll be using 103.31A/leg of the service?
EDIT:
Found the answer to this question. This seems to be the correct answer. HNG fixtures are just calculated using Ohm's law, like I did.
I want to calculate how much power I will use/need for this system.
Say I have this inventory in my rig:
24 Mac 2ks at 1200w each requiring 208v
48 575w S4 LEKOs on 120v
200A 3phase service
24 way 208 distro
48 2.4k dimmer rack
Assuming power factor = 1
The 24way distro will use 1200w/208v/1.732= 3.33A*8 = 26.64A/phase.
The dimmer rack will use 575w/120v*16=76.67A/phase
Do I need to be factoring in the phase offset for the dimmer rack too? Or is it safe to to say that I'll be using 103.31A/leg of the service?
EDIT:
Found the answer to this question. This seems to be the correct answer. HNG fixtures are just calculated using Ohm's law, like I did.
Last edited: