need help

  1. L

    Electrical exam need help please.

    Good evening. I have an exam next month and I am really struggling on a certain section of it. The section is on motors which is something I never ever do. I just house bash. I've put the link at the top of he page. The post is number 324 and its the bit where it says motors obviously. Any help...
  2. س

    Need help at Emergency central battery

    please i need your help to understand how can i make maintained or non maintained emergency luminaires . i want to ask about programming of CPU in ECB. is that responsible to make maintained or non maintained emergency lighting or not ? if not tell me what is using of this programming in CPU...
  3. B

    USB wall adapter with no safety / reg marks - need help

    Hi there, I ordered a phone of eBay and it came with a USB wall adapter (pictured) and as you can see their is no marking on the plug at all. Is this allowed? Should i notify the seller? I thought UK plugs had to have certain marks on them. (I am no expert with electrical "terminology"...
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