Open Deadline: April 15 of next year, no extension. Fund Deadline: April 15 of next year, no extension. Annual contribution limit may be affected by the number of months that you have an HDHP in a given tax year. You cannot use HSA funds to pay for expenses incurred prior to opening the account.
In electricity supply systems, an earthing (grounding) system defines the electrical potential of the conductors relative to that of the Earth's conductive surface. The choice of earthing system has implications for the safety and electromagnetic compatibility of the power supply.or measurement purposes, the Earth serves as a (reasonably) constant potential reference against which other potentials can be measured. An electrical ground system should have an appropriate current-carrying capability to serve as an adequate zero-voltage reference level.
When the subject of electricity comes up, you will often hear about electrical grounding, or just ground. For example, an electrical generator will say, Be sure to attach to an earth ground before using, or an appliance might warn, Do not use without an appropriate ground.. It turns out that the power company uses the Earth as one of the wires in the power system. The planet is a good conductor, and it's huge, so it makes a handy return path for electrons. Ground in the power-distribution grid is literally the ground that's all around you when you are walking outside.