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I get regular work from a student landlord. In one of his properties the shower isolator switch has burnt out on the feed side several times. I've replaced the switch twice (last time with an MK) and the shower's also been replaced. Insulation resistance on the circuit is >500 and the MCB hasn't tripped.

Any ideas?
 
I get regular work from a student landlord. In one of his properties the shower isolator switch has burnt out on the feed side several times. I've replaced the switch twice (last time with an MK) and the shower's also been replaced. Insulation resistance on the circuit is >500 and the MCB hasn't tripped.

Any ideas?
Heard this before, it could be that the Tenant is leaving the Shower switch on at the Shower, and is using the pull cord to switch it on and off under load conditions, nothing an iffy connection likes more, 8 plus KW switched many times. Try insisting they only use the pull cord as an isolator rather than a control switch. Just my take.
 
I get regular work from a student landlord. In one of his properties the shower isolator switch has burnt out on the feed side several times. I've replaced the switch twice (last time with an MK) and the shower's also been replaced. Insulation resistance on the circuit is >500 and the MCB hasn't tripped.
what is the size of the shower that it is in ?.
 
Someone posted earlier, these types of 'switches' are isolators, not functional switches. These electric shower has a functional switch, use that to turn it on & off.
 
Heard this before, it could be that the Tenant is leaving the Shower switch on at the Shower, and is using the pull cord to switch it on and off under load conditions, nothing an iffy connection likes more, 8 plus KW switched many times. Try insisting they only use the pull cord as an isolator rather than a control switch. Just my take.
Bad spelling where???? Willy.
 

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