I think we’ve all experienced the inconvenience of a prolonged power outage. Beside the inconvenience of no light, there is also the potential of spoiled food and a lack of heating or air conditioning. A power outage can get pretty uncomfortable. I thought I’d give a very brief introduction on how to purchase and set up a generator for use in case of home emergencies.
Before I begin, you should know that there are many things to consider when purchasing a generator, and I highly recommend consulting a professional. A certified professional will not only be able to recommend what generator is best for you and your property, but they will also be able to direct you on how to safely install and operate your generator. Also, a great source for information is the internet, which is full of helpful videos and diagrams. The following information is a summary of a pamphlet provided by DTE Energy:
1. Selecting Your Generator
Determine “constant wattage”
Depending on the generator, it can only operate a limited number of items. Determine what appliances you need to operate and add up the wattage. That total is your “constant wattage,” or the energy you need to keep the selected item running.
Determine “start-up wattage”
Motor-driven appliances, such as refrigerators, air conditioners, and furnace blowers require up to five times their normal wattage to start. Choose a generator that meets or exceeds your “constant wattage” and has a surge rating that meets or exceeds your “start-up wattage.”
Match voltage ratings
Most household appliances are rated at 120 volts, but some large appliances such as ranges and dryers are rated at 240 volts. A 240 volt appliance cannot be operated on a 120 volt generator.
2. How Many Watts?
Check the label or manual on the generator for its wattage capacity. On the appliances in your home, check labels inside or on the appliance for wattage. If the appliance only gives you it’s amps, you can multiply that times the voltage to determine wattage. Again, this might be a good time to consult a professional.
3. Connecting Your Generator
If you’ve already purchased a generator, we recommend you have a qualified electrician install it. If you’ve already installed it, have a local electrician check your work (for compliance with safety codes, that it’s properly grounded, and that any necessary permits are obtained). This will ensure that there is no “back-feed.” Back-feed occurs when an improperly connected generator begins feeding electricity back into the outside power lines. Back-feed can seriously injure or even kill. To prevent back-feed, we recommend you use one of two methods:
Transfer Switch: A qualified professional can install a transfer switch. The transfer switch disconnects the path of electricity between power lines and your main panel and connects the path between the generator and the panel.
Direct hookup: If you do not install a transfer switch, plug the appliances you want to operate directly into the generator. For an extra measure of safety, switch your main fuses or circuit breakers to the “off” position.
4. Operating Your Generator
There are a few important rules to remember when operating your generator.
- Read all instructions carefully
- Good ventilation is important (generators produce carbon monoxide)
- Handle fuel carefully
- Water conducts electricity
- Protect appliances
- Turn off or disconnect all appliances and lights before you begin operating the generator. Once the generator is running, turn your appliances and lights on one at a time to avoid overloading the unit and damaging your appliances.
5. Safety First!
Remember, you (the operator) are responsible for safe and proper operation of your generator. If for any reason you have questions, it is highly recommended that you contact a professional. This could be a qualified electrician, general retailer, manufacturer, or even a rental company. Get your questions answered first!!!
