Need 4kW in apartment bedroom.

[nbritton]

I'M NOT ASKING FOR "HOW TO", I'M AN ELECTRICAL AND COMPUTER SYSTEMS ENGINEER. I'M ASKING FOR ADVICE ON NEC COMPLIANCE!!! What is the best option to maintain compliance with the NEC?

I need about 3,900 watts (estimated power at max load) to power a blade server, in the second bedroom of my apartment. What are my options? I have 12-gague wire. Everything in the bedroom is on it's own circuit. However, the receptacle in the hallway and on the other side of the wall is on another circuit. The blade enclosure PSUs have six C20 receptacles, and a single enclosure is rated for up to 8kW.

In the eyes of the NEC which is less of a violation?:

Two tandem 15 amp breakers jumperred together (at the breaker) for 30 amps, with half the server PSUs plug into one circuit and the other half plugged into the other circuit.
One double pole 30 amp breaker, with half the load on one circuit and the other half on the other.
Re-wire the room for 240 volts @ 20 amps, by making the neutral hot. (Assumes the fan, fan light, and LED A19 bulbs can handle 240v).
Run new wire along the baseboard/wall (exposed) to a new 240 volts @ 30 amp circuit breaker. (Would need about 80 feet of wire).

 

[iwire]

I'M NOT ASKING FOR "HOW TO", I'M AN ELECTRICAL AND COMPUTER SYSTEMS ENGINEER. I'M ASKING FOR ADVICE ON NEC COMPLIANCE!!! What is the best option to maintain compliance with the NEC?

I need about 3,900 watts (estimated power at max load) to power a blade server, in the second bedroom of my apartment. What are my options? I have 12-gague wire. Everything in the bedroom is on it's own circuit. However, the receptacle in the hallway and on the other side of the wall is on another circuit. The blade enclosure PSUs have six C20 receptacles, and a single enclosure is rated for up to 8kW.

In the eyes of the NEC which is less of a violation?:

Two tandem 15 amp breakers jumperred together (at the breaker) for 30 amps, with half the server PSUs plug into one circuit and the other half plugged into the other circuit.
One double pole 30 amp breaker, with half the load on one circuit and the other half on the other.
Re-wire the room for 240 volts @ 20 amps, by making the neutral hot. (Assume the fan, fan light, and LED A19 bulbs can handle 240v).
Run new wire along the baseboard/wall (exposed) to a new 240 volts @ 30 amp circuit breaker. (Would need about 80 feet of wire).

Between this post and the other it is clear you intend to do the work yourself.

We are not going to help you with which is the 'lesser violation'.

Hire an electrician.