Home |
Search |
Today's Posts |
|
UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
Reply |
|
LinkBack | Thread Tools | Display Modes |
#1
Posted to uk.d-i-y
|
|||
|
|||
MCB Rating
A friend has a plumber fitting a Power Shower in place of an electric
shower. The plumber is going to use the existing electric shower wiring (mostly) and will down rate the MCB. The instructions for the Power Shower recommend a 3 amp fuse. For his Consumer Unit it appears that 6 amp is the lowest rating. With motor surge in mind - does this seem correct anyway? Regards John |
#2
Posted to uk.d-i-y
|
|||
|
|||
MCB Rating
|
#3
Posted to uk.d-i-y
|
|||
|
|||
MCB Rating
He was hoping to avoid the obvious solution which was to put a FSU in the loft above the shower - the only easy place. He doesn't like going into his loft. Any other locations mean more electrical work and routing of cables which he is hoping to avoid. |
#4
Posted to uk.d-i-y
|
|||
|
|||
MCB Rating
It is one of those Power Showers that is wall mounted - it is literally going over the place where the old electric shower used to be. (Just new gravity water feeds to it). |
#6
Posted to uk.d-i-y
|
|||
|
|||
MCB Rating
Must make the plumbing rather difficult? BTW, FCU must be in the bathroom, or immediately outside, not in the loft. It has to be positioned so as to be under the immediate control of a person working on the shower (or it has to be of a type which can be locked in the off-position with a padlock). Of course, the plumber should know all this, or he wouldn't be doing the wiring for the shower at all. -- Andrew Gabriel [email address is not usable -- followup in the newsgroup] ____________________________________ It is the house owner who won't go into the loft. I think it is wrong to assume a plumber knows all the electrical regulations - he is 68 years old as well. |
#7
Posted to uk.d-i-y
|
|||
|
|||
MCB Rating
In message , DerbyBoy
writes Must make the plumbing rather difficult? BTW, FCU must be in the bathroom, or immediately outside, not in the loft. It has to be positioned so as to be under the immediate control of a person working on the shower (or it has to be of a type which can be locked in the off-position with a padlock). Of course, the plumber should know all this, or he wouldn't be doing the wiring for the shower at all. ____________________________________ It is the house owner who won't go into the loft. I think it is wrong to assume a plumber knows all the electrical regulations - he is 68 He doesn't need to know all electrical regulations, but he should be up to speed on those bits which are relevant to his work. Is it not Part P notifiable being in a bathroom? -- Chris French |
#8
Posted to uk.d-i-y
|
|||
|
|||
MCB Rating
On 05/09/2011 21:54, chris French wrote:
He doesn't need to know all electrical regulations, but he should be up to speed on those bits which are relevant to his work. Is it not Part P notifiable being in a bathroom? A like for like swap would be non notifiable even in a "special location". However swapping from an electrically heated shower to a power shower is stretching the definition of "like for like" a little. Especially as it unlikely to be doable without at least some modification to the wiring. -- Cheers, John. /================================================== ===============\ | Internode Ltd - http://www.internode.co.uk | |-----------------------------------------------------------------| | John Rumm - john(at)internode(dot)co(dot)uk | \================================================= ================/ |
#9
Posted to uk.d-i-y
|
|||
|
|||
MCB Rating
John Rumm wrote:
On 05/09/2011 21:54, chris French wrote: He doesn't need to know all electrical regulations, but he should be up to speed on those bits which are relevant to his work. Is it not Part P notifiable being in a bathroom? A like for like swap would be non notifiable even in a "special location". However swapping from an electrically heated shower to a power shower is stretching the definition of "like for like" a little. Especially as it unlikely to be doable without at least some modification to the wiring. Lots of people think that a power shower IS an electric shower:-) -- Adam |
#10
Posted to uk.d-i-y
|
|||
|
|||
MCB Rating
Andrew Gabriel wrote:
In article , "DerbyBoy" No-one writes: It is one of those Power Showers that is wall mounted - it is literally going over the place where the old electric shower used to be. (Just new gravity water feeds to it). It's unlikely he will get the 6mm˛ or 10mm˛ electric shower cable into terminals of a 3A appliance. Any pro will tell you that you only need to remove 4 of the strands..... -- Adam |
#11
Posted to uk.d-i-y
|
|||
|
|||
MCB Rating
In article ,
John Rumm wrote: On 05/09/2011 21:54, chris French wrote: He doesn't need to know all electrical regulations, but he should be up to speed on those bits which are relevant to his work. Is it not Part P notifiable being in a bathroom? A like for like swap would be non notifiable even in a "special location". However swapping from an electrically heated shower to a power shower is stretching the definition of "like for like" a little. Especially as it unlikely to be doable without at least some modification to the wiring. when I installed a power shower some years ago, the supply to the unit was low voltage fed from a transformer. Does Part P then apply? -- From KT24 Using a RISC OS computer running v5.16 |
#12
Posted to uk.d-i-y
|
|||
|
|||
MCB Rating
On 06/09/2011 17:27, ARWadsworth wrote:
John wrote: On 05/09/2011 21:54, chris French wrote: He doesn't need to know all electrical regulations, but he should be up to speed on those bits which are relevant to his work. Is it not Part P notifiable being in a bathroom? A like for like swap would be non notifiable even in a "special location". However swapping from an electrically heated shower to a power shower is stretching the definition of "like for like" a little. Especially as it unlikely to be doable without at least some modification to the wiring. Lots of people think that a power shower IS an electric shower:-) That could turn out to be a shock on many different levels ;-) -- Cheers, John. /================================================== ===============\ | Internode Ltd - http://www.internode.co.uk | |-----------------------------------------------------------------| | John Rumm - john(at)internode(dot)co(dot)uk | \================================================= ================/ |
#13
Posted to uk.d-i-y
|
|||
|
|||
MCB Rating
On 06/09/2011 18:01, charles wrote:
In articlelIudnVyZEtrv1PvTnZ2dnUVZ8nednZ2d@brightvie w.co.uk, John wrote: On 05/09/2011 21:54, chris French wrote: He doesn't need to know all electrical regulations, but he should be up to speed on those bits which are relevant to his work. Is it not Part P notifiable being in a bathroom? A like for like swap would be non notifiable even in a "special location". However swapping from an electrically heated shower to a power shower is stretching the definition of "like for like" a little. Especially as it unlikely to be doable without at least some modification to the wiring. when I installed a power shower some years ago, the supply to the unit was low voltage fed from a transformer. Does Part P then apply? Probably depends on where the mains side of it was located. -- Cheers, John. /================================================== ===============\ | Internode Ltd - http://www.internode.co.uk | |-----------------------------------------------------------------| | John Rumm - john(at)internode(dot)co(dot)uk | \================================================= ================/ |
#14
Posted to uk.d-i-y
|
|||
|
|||
MCB Rating
On 06/09/2011 22:25, John Rumm wrote:
On 06/09/2011 18:01, charles wrote: when I installed a power shower some years ago, the supply to the unit was low voltage fed from a transformer. Does Part P then apply? Probably depends on where the mains side of it was located. For domestic installations Part P always applies (i.e the wiring must be safe), whether or not the work is notifiable. ELV circuits only get an exemption if they're for telecoms or control etc., rather than for power or lighting. An ELV circuit to power a shower pump should be notified (strictly...). -- Andy |
#15
Posted to uk.d-i-y
|
|||
|
|||
MCB Rating
On 6 Sep,
Andy Wade wrote: For domestic installations Part P always applies (i.e the wiring must be safe), whether or not the work is notifiable. ELV circuits only get an exemption if they're for telecoms or control etc., rather than for power or lighting. An ELV circuit to power a shower pump should be notified (strictly...). If it's in the bottom of the airing cupboard, across the landing from the bathroom? Shouldn't be notifiable whether it is ELV or normal mains as long as on an existing circuit. -- B Thumbs Change lycos to yahoo to reply |
#16
Posted to uk.d-i-y
|
|||
|
|||
MCB Rating
On 06/09/2011 23:24, Andy Wade wrote:
On 06/09/2011 22:25, John Rumm wrote: On 06/09/2011 18:01, charles wrote: when I installed a power shower some years ago, the supply to the unit was low voltage fed from a transformer. Does Part P then apply? Probably depends on where the mains side of it was located. For domestic installations Part P always applies (i.e the wiring must be safe), whether or not the work is notifiable. ELV circuits only get an exemption if they're for telecoms or control etc., rather than for power or lighting. An ELV circuit to power a shower pump should be notified (strictly...). My area of doubt was because some power showers basically are driven from a wallwart or soap on a rope style PSU, that then plugs into the back of the shower unit before it is hung - practically rendering the thing an "appliance". So with the socket outside the room (or in a space only accessible via a tool like the underbath space). ("Powershower" could also I suppose include a traditional shower pump installed outside of the bathroom). -- Cheers, John. /================================================== ===============\ | Internode Ltd - http://www.internode.co.uk | |-----------------------------------------------------------------| | John Rumm - john(at)internode(dot)co(dot)uk | \================================================= ================/ |
#17
Posted to uk.d-i-y
|
|||
|
|||
MCB Rating
On 07/09/2011 09:26, John Rumm wrote:
My area of doubt was because some power showers basically are driven from a wallwart or soap on a rope style PSU, that then plugs into the back of the shower unit before it is hung - practically rendering the thing an "appliance". Hmm, you can't argue that a shower isn't fixed equipment. Then see 0.4 (Electrical installation, definition of) and note h on page 9, both in the Approved Doc. ("Powershower" could also I suppose include a traditional shower pump installed outside of the bathroom). Yes that wouldn't be notifiable, assuming no new final circuit. -- Andy |
Reply |
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Forum | |||
Do DC caps have an AC rating? | Metalworking | |||
Rating contractors | Home Repair | |||
R-rating of Bow Window | Home Repair | |||
Carpet Rating | Home Repair | |||
1/2 drywall fire rating and fire rating attic ladder | Home Ownership |