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Discussion Starter · #12 ·
drumnut08 said:
surface mounted ? I'm assuming this a Reno to an existing school ?
Nope. California DSA jibs will no longer allow electrical conduit in block walls. All government jobs in California are going this way. The sad things is they added camera's and security after we were done. Looks like ****. I know.
 

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30 X 400 is 12,000 watts. In Canada we have 347 volt lighting or 35 amps.
Maximum OC protection for HID lighting in a commercial application is 20 amps where the voltage is 347 so the answer is 3 circuits and 3 switches with 35/3 = 12 amps on each 20 amp breaker but 15 amp preakers would work too.
 
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