I checked all the manufacturers’ Web sites to determine how much current is needed to power the equipment. All manufacturers except Graphtec provided power requirements for their equipment. I estimate that the Graphtec FC8000-75 will demand about the same power as the Roland printer.
I came up with the following requirements:
| Watts | |
| HP ScanJet 8300 | 36 |
| HP Color Inkjet Printer 2800 | 67 |
| Roland VersaCAMM VP 540i | 1030 |
| Western Graphtec FC8000-75 | 1000 ? |
| Royal Sovereign RSC-1400 | 100 |
| Two Computer/Monitors | 800 |
| SawTrax (15 amp saw) | 1530 |
| ========== | |
| TOTAL | 4563 Watts |
On a 120 volt circuit, this works out to a required current capacity of 38 amps. So at minimum, two 20 amp circuit breakers are required. Three might be even better.
The equipment doesn’t constantly draw this much power. Usually, the power specs are for peak or maximum demand, which often occur when you first turn on the equipment. This information may help you decide which equipment should share a common circuit breaker. For example, you might not want to have the SawTrax and the Roland (or Graphtec) on the same breaker since these are the most power hungry.
At Sierra Custom Signs, Inc. we added two 20 amp breakers to our electrical service because the existing breakers had all the lights plus the motor for the rollup warehouse door.
