The following is a list of the electrical items which can be used without incident simultaneously in my office:

• MacBook Pro
• Two external monitors
• Two tower PCs
• Shredder
• Stereo
• Two active outboard hard drives
• One router
• Two switches
• One laser printer
• Two overhead lights
• Two cordless phones
• One Vonage network adapter
• One space heater

The following is a list of the electrical items which, when used simultaneously, will cause a breaker to flip:

• One MacBook Pro
• Two external monitors
• Two tower PCs
• One Shredder
• One Stereo
• Two active outboard hard drives
• One router
• Two switches
• One laser printer
• Two overhead lights
• One space heater
• Two cordless phones
• One Vonage network adapter
• One vacuum cleaner

That is all.