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  1. S

    off load/on load switching

    Can anyone give a simple definition of on load and off load switching? Examples of each would be great, Am i right in thinking an emergency stop is a on load and a isolater a off load. Thanks in advance.
  2. A

    crabtree split load board.

    Hi Does anyone know if rcbo,s available for older starbreaker boards,not the c50,i think its sb6000 range.6a type b req.
  3. C

    Load and Supply 45 Amp DP Shower Switch

    I have recently moved a 45amp DP shower switch to a more convenient place but when I disconnected the cables I forgot to take note of which cable went to the load and supply... when I reconnect the cable does it matter which one I connected to? What will happen if it's connected the wrong way...
  4. S

    RCDs trip under no load

    Hi (first post) Has anyone had trouble with Wylex RCDs? Just installed a consumer unit and both my RCDs trip on power on but with all MCBs off and unable to reset them. Never used Wylex before so can I asume both RCDs are faulty? Will pop out and get some replacements, but thought I'd ask if...
  5. M

    Load testing alarm batteries.

    Anyone got a link to an alarm system battery checker? Using a regular DMM doesn't necessarily cut it, for me, so I've been putting a load on alarm batteries with an incandescent lamp during the annual PM to check them. ELK makes an alarm battery checker that relies on baseline measurements from...

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