Amp-Hour rating of battery capacity is calculated by multiplying the current in amperes times the time in hours. Battery run-times are a rule of thumb and may differ significantly in different equipment depending on current consumption and usage.

All electric lights have a published rating for expected life. This rating is in the hundreds of hours for many incandescent lights, and in the thousands of hours for our fluorescents. Fluorescent lights have a life rating based on how many hours they are left on every time they are turned on. This is usually referred to as "burn time", and for fluorescent lights the burn time is three hours. See similar questions...

Quite literally, one amp-hour is one amp of electric current running for one hour. It is a surrogate measure for power used in discussing 12-volt systems commonly used in the RV and Boat environment where it is assumed the voltage is always 12 volts. One amp-hour at 12 volts produces 12 watt-hours of power. A type-27 battery rated at 100 amp-hours contains about 50 amp-hours of useful power. You do not want to use more than half the stored energy from a battery, else you will damage the plates. See similar questions...

amp-hour is one amp for one hour, or 10 amps for 1/10 of an hour and so forth. It is amps X hours. If you have something that pulls 20 amps, and you use it for 20 minutes, then the amp-hours used would be 20 (amps) X .333 (hours), or 6.67 AH. The accepted AH rating time period for batteries used in solar electric and backup power systems (and for nearly all deep cycle batteries) is the "20 hour rate". This means that it is discharged down to 10. See similar questions...

Probably the most-asked question of all time. For a detailed explanation of fire ratings, please visit the ratings page located here. It is important to understand that 1, 2, or 3 hour represents how long a safe was TESTED, not how long it will LAST in a fire. On our ratings page you will see that safes actually last much longer than their posted rating in a fire. See similar questions...

Yes, Quantum trains for all ratings from Private to Airline Transport Pilot, including Instrument and Instrument Instructor ratings. See similar questions...

Well, I collect all sorts of humor. The criteria are simple ... if I think it's funny, it'll probably show up here sometime. But, as you can guess by now, the collection may well include things that might offend some people - things like sexual innuendo, nudity or coarse language. This isn't a collection of tasteless or dirty jokes, and in fact most are fairly clean. See similar questions...

raters answer the questions, they think about the main characters in the story and about the overall thrust of the story. If characters change morally, they rate them on how characters were at the end of the story. Because RECS rates the stories for what they can teach children, raters try not to make assumptions about thoughts or actions that were not explicitly in the story, paying attention to what characters say and do. See similar questions...

It's the first expansion pack to the number 1 selling PC game of 2003**. In Command & Conquer Generals Zero Hour, you face off against military masterminds for battlefield supremacy. Become the ultimate modern warfare General as you command all-new, next-generation weapons and armies while taking on elite commanders in the unique Generals Challenge mode. See similar questions...

Absolutely not. With USAFSP, the price is set on the value of the project. While we will have a reasonable idea of how long the entire project will take, it is in both our interests for us to stay until your team is properly educated and trained as per our agreement. With USAFSP, there will be no clock watching on your part, and no concern about us stretching the project out to pad the bill. You know the total cost before the project begins. See similar questions...

Four hour session limits mean you will be automatically disconnected after 4 hours, and 20 minutes idle time means you will be automatically disconnected if your Internet connection remains idle (no data being transferred) for 20 minutes or more. This is to ensure everyone gets a fair go and to stop people leaving their Internet on all day, or while they are not using it. See similar questions...

All insurance companies are rated by different independent financial rating services. They are A.M. Best, Standard & Poor's, Fitch and Moody's. The insurance companies are evaluated based on their overall financial strength and liquidity and are assigned ratings. Look at our rating descriptions and learn more. See similar questions...

Underwriters Laboratories (UL) is an agency that designs testing and standards for manufactured products of all shapes and sizes. Class A roof coverings are effective against severe fire test exposures. Under such exposures, roof coverings of this class afford a high degree of fire protection to the roof deck, do not slip from position, and are not expected to produce flying brands. This is the highest rating attainable. See similar questions...

Very high standards of compliance with food safety legislation. Demonstrating best practice in managing and achieving this. A general failure to comply with legal requirements. Little or no appreciation of food safety. Major effort is required. The ratings allow you to see, at a glance, the standards in the business at the time of its last inspection. See similar questions...

The most widely cited place appears to be photodo, which is sadly out of date. photozone also has lens reviews. A note about lens reviews: There is often significant variation between samples of lenses. Reviews typically consider just a single sample, so you may not get the full picture from reading just a single review. See similar questions...

Member ratings is a system put in place by YardSaleNet.net to help members decide who are honest people to deal with and who should not be dealt with. It can be used as a sort of security measure for our members. See similar questions...

When a transaction takes place between members, those involved are encouraged to rate each other on the process of the transaction. For more information, click on the "Member Ratings" link located on the side bar of every page at YardSaleNet.net. See similar questions...