As well you should be. However, contrary to posts 16 and 19, the 130% neutral (double neutral) only applies to portable equipment: https://www.controlbooth.com/threads/why-two-neutral-camlok-inputs.8986/#post-104730 .
As well you should be. However, contrary to posts 16 and 19, the 130% neutral (double neutral) only applies to portable equipment: https://www.controlbooth.com/threads/why-two-neutral-camlok-inputs.8986/#post-104730 .
The cost between 200 and 400 is slim? Just the transformer cost is significant.
Portable counts when once a year I'm going to roll it to the other side of the building and use it there... There will be a 400A service box with cam-lok tie-ins and a company switch.Sounds like a "portable" rack being permanently "installed." If the outputs are connected to other-than-portable-cable, i.e. installed building wiring, you'll need a road show connection panel with a circuit breaker for each permanent circuit. Something to consider.
.
Portable counts when once a year I'm going to roll it to the other side of the building and use it there... There will be a 400A service box with cam-lok tie-ins and a company switch.
I'd like to do it once also but if you're unlikely to ever have more than 100 s4s in this room, why two to three times the power?It might depend on your local power company. Had a 600a 120/208 put into a building(Commercial building; transformer was on a pole and utility owned, upgraded from a useless-to-us Delta service) The cost over a 200a or 400a was negligible. The installation cost was even spread over 1 year of utility bills at 0% interest. If you have to buy the transformer this may change quite a bit, but still, labor is a big portion. I'd rather do it once right than have to do it twice.
I'd like to do it once also but if you're unlikely to ever have more than 100 s4s in this room, why two to three times the power?
Which is why what we do we call "portable".Technically 90 days is the NEC rule for "temporary", ...
Finally, we all need to be careful with the use of "temporary" vs. "portable". What we do in the theatre is portable covered by NEC article 520. Temporary is covered by NEC article 590 and aimed at construction sites, with associated time limits and other requirements that have nothing to do with theatre installations. Use of the word "temporary" with an inspector is fraught with peril, IMHO.
We use essential cookies to make this site work, and optional cookies to enhance your experience.