The main objective of a physical map is to show landforms, bodies of water and other geographical features. Features shown include mountains, deserts and lowlands as well as lakes, rivers and oceans.
Depending on your electricity prices, a 400 watt HID will cost $200 â $400 each year of use, plus the cost of replacement bulbs. LEDs meant to replace 400w HIDs average around 180 watts.
Running cost = Consumption of Heater X number of hours run X Electricity Unit Cost. So let work out how much it will cost to run a 2000 watt (2kw) convector heater for a period of 5 hours where each unit of electricity costs us 13 pence. 2 (kw) x 5 (hours) x 13 (pence) = 130 pence or Â£1.30.So to run a 2kw convector for 5 hours would cost you Â£1.30 based on an Electricity unit cost of 13 pence.Lets do the formula again, but this time using the rating of a 2500 watt convector heater, and an Electricity unit cost of 17p in the example. 2.5 (kw) x 5 (hours) x 17 (pence) = 212.5 Pence or Â£2.125.o to run a 2kw convector for 5 hours would cost you Â£1.30 based on an Electricity unit cost of 13 pence. Lets do the formula again, but this time using the rating of a 2500 watt convector heater, and an Electricity unit cost of 17p in the example. 2.5 (kw) x 5 (hours) x 17 (pence) = 212.5 Pence or Â£2.125.