owengee

3 ms·

1. 1.▲
   by owengee 3y ago

   For batteries it tends to be multiple of the battery cell voltages. So 48v is probably so you could wire 4x12v batteries in series but that is a guess. With tool voltages this tends to be a multiple of the nominal battery voltage (rounded f
2. 2.▲
   by owengee 6y ago

   Something is very amiss with the QLD data. A better site for exploring composition of generation is https://opennem.org.au/energy/qld1/ . That said, the result is about right for CO2 intensity, if a bit high. Also
3. 3.▲
   by owengee 8y ago

   Concrete setting times depend on ambient temperature. Too cold and concrete takes longer to achieve the necessary strength to start the next level. Admixtures and other techniques can improve this. So the claim for taking less time than a _
4. 4.▲
   by owengee 8y ago

   Worth pointing out that if you're patient with setting times, you can use portland cement substitutes (fly ash, ground blast furnace slag) as a substitute for portland cement. Slower strength times (several days longer) but same long t