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Andreacooke12
Emergency credit works differently between electricity meters and gas meters for obvious safety reasons.
An electricity meter counts down to zero. 5p...4p...3p...2p...1p...and then shuts off at zero. You physically have to activate your emergency credit by pulling the card or key, putting it back in and pressing a button, or something.
Gas is a little different. Your emergency credit of £5 is available but activates automatically when your actual credit goes below £1. Your meter then counts down 5p...4p...3p...2p...1p...and then stays on but begins using the emergency credit without you having to do anything.
Imagine you got down to zero, and you had something on the gas hob or in the oven. If your meter dropped the gas supply off, and it took you a minute or two to activate the emergency credit manually, and you hadn't turned everything off, you could come back to a kitchen full of gas, or worse.
So, by design, the meter stays on, counting into the emergency credit. Once that credit is used up, the gas will go off. It's not that you don't have emergency credit...it's that you've used it. When you top up again, your meter will put the emergency credit back on, and then apply the rest of your top-up as actual credit, assuming you put more than £6 on the card or key. If you don't get your credit above £1, you will still be using the emergency credit.