Using backup generators safely
These important rules can save lives.
During a major power outage, some businesses and homeowners fire up portable generators. While convenient, they can be dangerous if used incorrectly. PGE offers this guide to help keep you and your employees safe.
Read the manual
If you’re going to use a portable generator, the first thing you need to do is to read and follow the owner’s manual carefully. It has important safety information.
Key safety rules
Here’s a quick overview of the things you need to remember when using a portable generator:
- Only operate your generator outside in a well-ventilated area to prevent deadly carbon monoxide poisoning. Make sure to place it far away from doors and windows so carbon monoxide cannot be drawn into the building.
- Connect a generator to individual appliances only. Never try to connect a generator directly to your building’s wiring. This is extremely dangerous. Power can back feed or flow into PGE’s electrical system and endanger the lives of linemen who may be working on power lines.
- Don’t get shocked. Make sure to use an outdoor-rated, grounded extension cord — one with a GFCI (ground-fault circuit interrupter) is best. Always follow manufacturer’s instructions for grounding the generator, too.
- Be careful — it’s hot! A portable generator can get very hot during operation. Use caution so you don’t get burned. And let the engine cool before refueling.
Time to consult an electrician?
The safest and best way to prevent portable generator backfeed problems is to install a transfer switch. A transfer switch permits a building’s wiring system to be easily and cleanly disconnected from PGE’s system, and allows you to control the flow of electricity to those circuits you need most. Transfer switches are not inexpensive and require installation by a licensed electrician.
Or, if you have a larger operation, you may prefer a permanent standby generator. Consult an electrician to evaluate the costs and benefits to see if it pencils out for you.