X Ray Machine

[terryrayhi]

Hello all!!!
I was wondering if anyone knew how to calculate the load for a Xray Machine Generator?
Our service is a 120/208 3PH

Here are the specs on the generator

Momentary Current 185A @230V
Momentary Power Consumption 43 Kva

Thanks

 

[spsnyder]

I come up with 43 kVA, (single phase). What are you asking for?

Your question give the load. Are you asking for OCP / Conductor sizing?

 

[steve66]

Look in NEC 517 if it is a health care xray machine. If memory serves me right, the first xray machine is calculated at 50% of the momentary demand.

If its 3 phase, the momentary demand would be about 67KVA.

Steve

 

[terryrayhi]

I guess the real question I am trying to get at is if a 225A service is big enough for this urgency care clinic

2500 square feet
50 duplex receptacles
7 ton air conditioning
x ray machine 150A momentary draw
gas heat
gas water heater

 

[Terrynistler]

400 amp minimum. They have all kinds of nice highdraw little goodies they are going to plug in there. You should have EE drawings though what does he say?