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by sparx
Sun Mar 25, 2007 10:47 pm
Forum: Electrics Forum
Topic: Electric Shower
Replies: 2
Views: 4179

short answer..a part p electrician cannot legally issue a completion cert. for work he has not done himself!,you may find one prepared to sign it off as his work, but I wouldn't! sorry. your existing load is on the limit, your proposed additional load looks ok on a 10mm2 SWA over the distance allowi...
by sparx
Sun Mar 25, 2007 10:28 pm
Forum: Electrics Forum
Topic: A double switch for two separate lights.
Replies: 2
Views: 7077

suggest you look on Docs site for ceiling rose wiring! , you can't connect to switch wires only as there is no neutral at switches normally.... the fact that there are 2 reds in switch confirms this, sorry but you need neutral from ceiling rose & live from switch. double sw. is two way so don,t ...
by sparx
Sun Mar 25, 2007 10:17 pm
Forum: Electrics Forum
Topic: Shower Blowing a fuse
Replies: 1
Views: 4274

Without getting all mathsy..... each kWatt draws around 4.2 Amps from supply, SO.......8 x 4.2A =33.6A. and......10.5 x 4.2A=44.1A i,m guessing you have a 40 A. fuse fitted?, will your circuit cable take a larger fuse rating, how large is the cable?, how far from fuse board to shower in meters ? you...
by sparx
Sun Mar 25, 2007 10:02 pm
Forum: Electrics Forum
Topic: RCCB snags
Replies: 1
Views: 3621

In a lifetime in the trade I have only ever had 2 out of spec RCCB's, an rcd tester will confirm if connected with all outgoing mcb's off, or an Earth leakage clamp meter around live & neutral tails, (not including Earth ). If niether available An insulation tester 'Megger' with all accessories ...
by sparx
Sun Mar 25, 2007 9:50 pm
Forum: Electrics Forum
Topic: 4 cable ceiling rose
Replies: 1
Views: 3858

you should only have 3 cables in a normal rose, 1 is supply in, 1 is supply out to next rose, 1 is switch wire. The 4th cable may go to a fan or maybe a wall light or a second light in same room you don't say what room you are in! In all cases there should be 3 black wires in with the flexes blue, o...
by sparx
Sun Mar 25, 2007 9:33 pm
Forum: Electrics Forum
Topic: service head move
Replies: 2
Views: 3744

If you had a TNC-S (pme) supply Ie the earth came from the service head out of the side of the neutral block or from the cable sheath TNC, they do not HAVE to give you an earth but will if asked. Most do it automatically, maybe only when tails and earth (CPC) are in place for them to connect to, com...
by sparx
Wed Mar 21, 2007 10:32 pm
Forum: Electrics Forum
Topic: Bathroom pullcord light switch swap!
Replies: 3
Views: 4525

bathroom pull switch swop

you have a 'double pole switch' ie. it switched live& neutral. your new one does not switch neutral so the two blacks go together in a spare terminal 'chock-block' in the switch box , the two earths go together in the fixed terminal in the box. The reds go one to 'Common' term. other to L1, L2 i...
by sparx
Wed Mar 21, 2007 8:41 pm
Forum: Electrics Forum
Topic: Bathroom pullcord light switch swap!
Replies: 3
Views: 4525

bathroom pull switch swop

the old switch sounds like the type used for showers, but if only used for lights then you need to join the 2 blacks together in a connector block ,put both earths together in earth term. in back box.
fit one red into common term. & other red into either l1 or l2, leaving other one empty.
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