watts | Page 3

watts

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  1. P

    fuses on fridge freezers?

    Hi there. Im new to PAT testing. I am confused as all the fridges/freezers I have looked at range from 55 watts to 135 watts and from what Ive been taught any appliance under 700 watts requires either a 3 or 5 amp fuse. However, all the above that I have seen have a 13 amp fuse and the CE rating...
  2. J

    Solar Invertor standby watts correct

    Question for you solar guys. My neighbour has had fitted a 3.3kw solar PV array with an Effekta ES3300 invertors. Using an Owl+USB energy monitor that records the kW’s generated by the min graph the results and you can see the point at which the invertors goes into standby. At this point and...
  3. H

    Max load on 850watt dimmer

    ? trying to work out max load on 800watt dimmer with 50watt low voltage down lights have to calculate the load by the amount of 60va transformers instead of the lamp watts not sure how to convert the amount of 60va transformers into max watts for the dimmer
  4. C

    back to basics higher the volts lower the amps?

    hi guys am i right in saying that generally the higher the amps the lower the volts ?? watts divided by amps = volts watts divided by volts = amps amps x volts = watts taking that in mind a 12v extra low voltage spot light which is 50 watts = 4.1 amps 240v low voltage 100w bulb = 0.4...
  5. R

    Underfloor Heating

    Hi im new to the forum, a DIY enthusiast. I have underfloor heating, originally made up of 20meters of cable, running 240 V at 320 W 160 ohms. Now i want to half this same cable to 10m, however this would lead to a reduction of resistance by half, effectively doubling the power going through the...
  6. N

    Watts to Amps

    For single phase its easy Amps = Watts/Volts. Is it as easy for 3 phase? Amps = Watts/Volts/3 per phase. or is there a root 2 in their somewhere? I need to know to calc the voltage drop along the supply. Thanks in advance for any offers.
  7. J

    Dimmers keep blowing

    Can anyone advise me? I have changed 5 dimmer switches in a pub and after around 2 months they stop working this has happened twice now. I have put 1000 watts dimmers as the load is 700 watts, so I not overloading it, could it be that the lights are on for around 12 hours everyday?:confused:
  8. M

    Lcm, booster, photo cell key switch

    Hi Done tube work wired lights and photo cell, the key switch, Lcm and power booster done by another guy, switched on lights ok but they are very dim and take 1 hour to warm up, photo cell not working? Around 13-14 lights on a long run, if the lights were from the board via a key switch things...
  9. J

    Heavy duty Timer Light Switch

    Hi, I'm looking for a timer to replace a standard light switch which has been installed to control a pond pump rated at 700 watts (max) but all I can find are units rated at up to 400 watts. Anybody come accross anything like this or have any suggestions? Thanks a lot. Johnnymag
  10. U

    watts and VA

    Whats The Difference Between Watts And Va. What Does It Mean , Is Watts The Power Consumed And Va The Power Available

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