So this circuit would be fused at a 3 amp maximum fuse. To get this divide the VA rating by the voltage. So, using this formula, a 75 VA rated 24 volt transformer has a maximum load of 3.125 amps. If you know the voltage output of the transformer (load side) and the VA rating of the transformer, you can calculate the amperage of the load side of the transformer. Simply put, the VA rating is the math formula used in determining the amperage at a given voltage. This will then determine the maximum load that can be connected to the transformer. The fuse must be smaller than the VA rating of the transformer. The VA rating is used to select the properly sized fuse for that circuit. ![]() The secondary side of the transformer is often labeled LOAD. The secondary side of the transformer is the new power source. ![]() The primary side of the transformer is the light bulb. When we talk about transformers, we talk about primary and secondary sides of the transformer. A transformer is the light bulb end of one circuit ( could be either higher voltage reduced to lower voltage or it could be lower voltage increased to higher voltage ) and a power source for another part of the circuit. If you keep in mind that everything in an electrical circuit is either a power source, switch, or light bulb, transformers are actually light bulbs and power sources. I often get questions on transformers and blown fuses and asked if they can put in a bigger fuse on the control circuit - of course the answer is NO!
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |