| T.R | Title | User | Personal Name
 | Date | Lines | 
|---|
| 540.1 | Going to ground | ROCKS::ROBINSON | Seasonally adjusted | Tue May 06 1997 12:39 | 6 | 
|  |     The trip (RCD) is going because there is a short (or partial short)
    between live or neutral and earth. I think most lawnmowers are two wires
    only (no earth), so the problem is mostly likely in the plug. Take a look
    for dead spiders, water, etc.
    
    Chris
 | 
| 540.2 | Clean it well | BIRDIE::ORLOWSKI |  | Tue May 06 1997 14:18 | 4 | 
|  |     ....or possibly a jam up of string around the blade or grass under the 
    housing.
    
                                          -Steve
 | 
| 540.3 |  | FORTY2::PALKA |  | Wed May 07 1997 09:22 | 11 | 
|  |     An RCDshould only trip if there is an imbalance in the current in the
    live and neutral leads. This can happen with a leakage path between
    the current carrying wires and earth. If the mower has a three wire
    cable then it must have a metal frame. The leakage may be due to damp
    inside part of the mower (switch or motor) or may be due to damaged
    insulation. If the mower has a 2 wire cable then the leakage must be
    to the ground (possibly via the blade). Again this might be due to
    damp or damaged insulation, but 2 wire equipment ought to be
    sufficiently well insulated that this can not happen !
    
    Andrew
 | 
| 540.4 |  | WOTVAX::DODD |  | Thu May 08 1997 08:29 | 8 | 
|  |     First, obviuous question - is it the mower or the socket? If you are
    using a seldom used socket check the mower in a socket you know is
    good. Similarly with any extension leads. Then check connections in the
    failing component.
    
    Good luck!
    
    Andrew
 | 
| 540.5 |  | MARVIN::PATEL |  | Mon May 12 1997 08:19 | 3 | 
|  | Thanks for all the replies. I found the problem. The lead from
the motor to the switch on the lawn mower handle had been scratched (probably when
it rubbed against a garden wall) exposing the wiring.
 |