by BLAKEY1963 »
Sun Jun 24, 2007 10:57 pm
[quote="mscg"]I would like to take out a 7kw shower and replace with a 9.5 kw shower. the cable looks like 6mm, although the installation is 10 years old+. the shower is approx 10m away from the fuse board - could I run this with a 40 amp mcb - ? ( currently 30amp) - also there is no rcd in place - is this ok - would appreciate some opinions - many thanks[/quote]
JOHN
GLAD U GOT BOILER LOOKED AT .
REGARDING YOUR SHOWER U WILL NOT BE ABLE TO
DO THE WORK AS IT IS NOTIFIABLE. BUT LOOKING AT WHAT IS TO BE
DONE ? I WOULD ADVISE A 10 MM2 TWIN AND EARTH CABLE BACK TO THE MAINS BOARD WITH A MEANS OF ISOLATION LOCAL TO THE SHOWER POSITION ( IDEALLY NICE CRABTREE 50 AMP RATED ROUND PULLCORD SWITCH ), FED FROM AS SAY AT THE MAINS BOARD A 40 AMP
MCB. SUPPLEMENTRY BONDING REQUIRED IN 4MM2 EARTH BETWEEN
CURRENT USING EQUIPMENT IN BATHROOM ( BETWEEN PULLCORD OF LIGHT SWITCH AND SHOWER ). YOU WILL NEED SUPPLEMENTRY
PROTECTION AGAINST ELECTRIC SHOCK BY FITTING AN RCD AT THE MAINS BOARD. ( DO NOT KNOW YOUR BOARD BUT A R.C.B.O IS AN OPTION )
YOUR SPARKEY SHOULD COVER WHAT I HAVE SAID FOR YOUR INFO AND
ANYTHING ELSE HE RECOMMENDS AS HE IS CERTIFYING AND TESTING THE JOB.
BLAKEY1963