Shower pullcord burn out
- Thread starter Seasand
- Start date
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It's right on the limit for a 45A switch, so either you're using cheap electrical accessories that just wont take the load, or the connections are too loose.
You need to up that pull cord to 50A (crabtree do one)
Make sure those connections are tighter than a gnats chuff!!!
Make sure those connections are tighter than a gnats chuff!!!
Unless shower makers have had a sudden attack of the scruples, that 10.5kW will be at 240V, i.e. 43.75A.
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You're probably quite right BAS, still best check on the legend plate!!
This is key. If you put in a new switch and connect to old, discoloured or burnt conductors then it will just heat up again.
Copper: bright
terminations: tight
Leaving the switch on the shower ON and using the isolator as the ON-OFF switch for the shower can also lead to an early demise of the isolator.
Not all isolators are designed to switch on load. This is in the spec sheet for a rotary isolator fitted to a conveyor belt.
Mechanical lifetime
> 100,000 operations
Switching operations
(no load) > 100,000 operations
(20 amps) > 2,000 operations
Not all isolators are designed to switch on load. This is in the spec sheet for a rotary isolator fitted to a conveyor belt.
Mechanical lifetime
> 100,000 operations
Switching operations
(no load) > 100,000 operations
(20 amps) > 2,000 operations
And the shower.
No. it had been diverted elsewhere due to a loose wire in terminal 5 of the isolator
K
kai
It may be a good idea to use a 100amp DP isolator in a small din-box, more durable than the pullswitch, provided you can hide it inside an airing cupboard or the like!
Go the whole way and have a 100 amp contactor switching the shower. Operate the contactor by switching the coil with a 6 amp lighting type pull cord switch ( much longer life time than an isolator switch ) and sneak in a timer to release the contactor after a reasonable duration for a shower. This way 15 minute showers can be prevented, saves money and condensation.......Very handy in a house full of women.....
I think it would be much better (although warranty-invalidating) to separate out the supply to the solenoid valve and the supply to the heater can, and have the latter on a timer.
That way the message can be "you can have a shower that's as long as you like, but only the first 10 minutes will be hot".
That way the message can be "you can have a shower that's as long as you like, but only the first 10 minutes will be hot".
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