Heating mantle and quick fit

I know this is an old post but I have something to add from my college's experience - sixth form chemistry. Having bought several heating mantles they found they couldn't use them all at the same time as a class because it overloaded the electric circuits. So one is used for demos but when it comes to class practicals they use a burner and water and small volumes of flammables. The building is not so old, but the circuits couldn't handle the heavy load of several heating mantles at the same time. So check with your estates team before splashing out on the equipment!

Even new(ish) buildings suffer from this sort of poor design.