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How to supply a 20A Distribution cct?

Sorry if this is too simplistic a question but I'm wondering what you think, given I've had conflicting views from a trade assoc tech dept and Hager tech dept.


A 65m, SP+N, 20A (estimated, but could be subject to some increase) distribution cct, fed from within a commercial setting (an osteopathy/acupuncture service provided in a converted ground floor flat), is to supply a shed/summerhouse with a couple of sockets (for a kettle and TV) and a couple of LED bulkheads (via cb's in the shed CU), sited at the end of the garden. How would you supply the distr. cct at the meter position?

- From a henley block in the existing tails:

              - Its own modular enclosure containing DIN rail mounted main switch and 20A fuse carrier.

              - A rotary handled 20A fused switch disconnector.

- From a 20A cb in the existing CU.


From the trade assoc., one said from the CU, another said it's got to have its own main sw, another said no problem with the modular encl and fuse carrier. While Hager said its got to be the rotary type, not the fuse carrier.


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Parents
  • Well, just meet on site, and what a pain that was - kin'ell. 



    D​​istr cct 72m meter to CU, plus 10m lighting final cct and 8m skts. It's a shed come sun room for someone to sit in when needed. True to form, it was keep it cheap, only want two skts for tv and kettle, and said if had his way wouldn't even have the kettle, they can walk to the flat for a brew. He Glossed over having a heater.


    Distr cct needs clipping to a wall approx 15m, of which approx 3m is behind thick bushes. He wants me to beat my way in there to affix cable, and use plastic or galv cond to support the cable, the cond being affixed at each end and possibly once in the middle, over the 3m stretch; it's not his bushes so cant cut them.


    He wants the cable affixed to fence, which is actually quite sturdy though, 8 foot posts, hit and miss design.


    In the flat, cable needs drilling through head plate of a lathe and plaster wall, without knowing what's in there, and again through a 2 feet thick stone wall (lathe and platter both sides) from kitchen to utility room at ceiling height, right near where the safe zone is for a kitchen light switch. I said, just move along the wall a bit further, but he didn't like that that meant using a bit more cable to go past where needed then back again in the other side. I pointed out that the switch wiring could be damaged, to which he got a bit annoyed at the thought of having to pay for repairs. I said this will all be in my quote, so you're informed in writing, and got a bit annoyed that i was looking for problems, saying well it hasn't happened yet! 


    To top it all off, he's only got a 60A sp supply, but had the same it's not been a problem so far attitude, not wanting to hear about possible uprating of supply, or that depending on max load and load profile he could end up popping the main fuse; true, there's no sign of heat damage to tails or CU, but he just shut down from listening to possibilities, at times verbally dismissing it or being somewhat evasive.


    Is it just me, or do others find it mentally draining when you're with someone who you can see in there eyes is counting every penny, squeezing every penny, and almost rolling there eyes at the mention of having to have this and that installed?


    He then wants the price yesterday and the job finished tomorrow, but if the quotes too high he'll just run a lead, for ......$?#!$$!#?$$!$#?$?$ sake.


    I'm thinking just dump this and move on. Sorry for the rant but it is quite helpful to air such things to people who've probably been thru such things themselves. Customers should come with a health warning.


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Reply
  • Well, just meet on site, and what a pain that was - kin'ell. 



    D​​istr cct 72m meter to CU, plus 10m lighting final cct and 8m skts. It's a shed come sun room for someone to sit in when needed. True to form, it was keep it cheap, only want two skts for tv and kettle, and said if had his way wouldn't even have the kettle, they can walk to the flat for a brew. He Glossed over having a heater.


    Distr cct needs clipping to a wall approx 15m, of which approx 3m is behind thick bushes. He wants me to beat my way in there to affix cable, and use plastic or galv cond to support the cable, the cond being affixed at each end and possibly once in the middle, over the 3m stretch; it's not his bushes so cant cut them.


    He wants the cable affixed to fence, which is actually quite sturdy though, 8 foot posts, hit and miss design.


    In the flat, cable needs drilling through head plate of a lathe and plaster wall, without knowing what's in there, and again through a 2 feet thick stone wall (lathe and platter both sides) from kitchen to utility room at ceiling height, right near where the safe zone is for a kitchen light switch. I said, just move along the wall a bit further, but he didn't like that that meant using a bit more cable to go past where needed then back again in the other side. I pointed out that the switch wiring could be damaged, to which he got a bit annoyed at the thought of having to pay for repairs. I said this will all be in my quote, so you're informed in writing, and got a bit annoyed that i was looking for problems, saying well it hasn't happened yet! 


    To top it all off, he's only got a 60A sp supply, but had the same it's not been a problem so far attitude, not wanting to hear about possible uprating of supply, or that depending on max load and load profile he could end up popping the main fuse; true, there's no sign of heat damage to tails or CU, but he just shut down from listening to possibilities, at times verbally dismissing it or being somewhat evasive.


    Is it just me, or do others find it mentally draining when you're with someone who you can see in there eyes is counting every penny, squeezing every penny, and almost rolling there eyes at the mention of having to have this and that installed?


    He then wants the price yesterday and the job finished tomorrow, but if the quotes too high he'll just run a lead, for ......$?#!$$!#?$$!$#?$?$ sake.


    I'm thinking just dump this and move on. Sorry for the rant but it is quite helpful to air such things to people who've probably been thru such things themselves. Customers should come with a health warning.


    F
Children
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