IET
Decrease font size
Increase font size
Topic Title: SPDs for a Church?
Topic Summary:
Created On: 27 February 2019 07:11 pm
Status: Read Only
Linear : Threading : Single : Branch
Search Topic Search Topic
Topic Tools Topic Tools
View similar topics View similar topics
View topic in raw text format. Print this topic.
 27 February 2019 07:11 pm
User is offline View Users Profile Print this message



yellowvanman

Posts: 43
Joined: 06 August 2016

Rural Church - risk calculation <1000. Spire but no Lighting protection.
Nothing of any value (electrically) within - does it really need SPDs?
 27 February 2019 07:23 pm
User is offline View Users Profile Print this message



Zoomup

Posts: 6117
Joined: 20 February 2014

Is it a heritage status building?

Z.
 27 February 2019 07:46 pm
User is offline View Users Profile Print this message



yellowvanman

Posts: 43
Joined: 06 August 2016

NO
 27 February 2019 08:40 pm
User is offline View Users Profile Print this message



ebee

Posts: 6735
Joined: 02 December 2004

You`d think the C E O would prevent such acts of god occouring there

-------------------------
Regards,
Ebee (M I S P N)

Knotted cables cause Lumpy Lektrik
 27 February 2019 09:30 pm
User is offline View Users Profile Print this message



chrispearson

Posts: 1095
Joined: 15 February 2018

No, but it may need lightning protection. Remember York Minster?

What might be fried in a rural church? The boiler controls? The sound system?
 28 February 2019 04:25 pm
User is offline View Users Profile Print this message



yellowvanman

Posts: 43
Joined: 06 August 2016

No Boiler, no sound system. Some lights and some infra red heaters thats about it!
 28 February 2019 05:30 pm
User is offline View Users Profile Print this message



ArduinoXR

Posts: 104
Joined: 16 August 2017

Risk assessment. No danger to life, no critical systems. Possibly a surge arrest on the MSB/Incoming. Only if asked for by the client after you have presented your opinion (as per above).
 28 February 2019 06:01 pm
User is offline View Users Profile Print this message



alancapon

Posts: 7492
Joined: 27 December 2005

What about an organ? Some of these can be very expensive instruments.

Regards,

Alan.
 28 February 2019 09:21 pm
User is offline View Users Profile Print this message



chrispearson

Posts: 1095
Joined: 15 February 2018

Originally posted by: alancapon

What about an organ? Some of these can be very expensive instruments.


No boiler etc. - the organ may still be hand-pumped.
 01 March 2019 12:21 pm
User is offline View Users Profile Print this message



Angram

Posts: 657
Joined: 23 March 2009

AS a matter of interest the York Minster fire was caused by lighting wiring being installed in a roof space when there was lightning conductor cable on the roof above: the lightning side flashed through the roof to the new lighting wires inside. The roof smouldered undiscovered until it was too late.

My friend from, then, Yorkshire Water, who was a lighting chaser saw the event.

Angram
 02 March 2019 12:59 am
User is offline View Users Profile Print this message



wallywombat

Posts: 96
Joined: 19 October 2018

Unless it's single dwelling, the "negligible value" exemption doesn't apply. Since CRL < 1000, that means that a rewire must include SPDs in order to comply with BS7671:2018. Whether you have to install SPDs for a job that is less than a complete reinstall is of course something that can be happily debated on forums without ever reaching a conclusion.
 02 March 2019 09:40 pm
User is offline View Users Profile Print this message



broadgage

Posts: 3170
Joined: 07 August 2007

Originally posted by: alancapon

What about an organ? Some of these can be very expensive instruments.
Regards,
Alan.


Presuming a conventional organ, these use low pressure compressed air from a blower worked by a standard induction motor.
These motors are not particularly vulnerable and are cheap to replace.
As has already been said, a REALLY basic organ might use hand or foot powered bellows.
Exceptionally, small water turbines have been used.
 04 March 2019 06:29 am
User is offline View Users Profile Print this message



alancapon

Posts: 7492
Joined: 27 December 2005

Originally posted by: broadgage
. . . Presuming a conventional organ, these use low pressure compressed air from a blower worked by a standard induction motor.

These motors are not particularly vulnerable and are cheap to replace. . .

True, but it also depends on the link between the keys and the pipes. These could be mechanical or more often electro-pneumatic, where a small solenoid valve opens the air supply to each pipe. The small wiring in these can be quite significant.

Regards,

Alan.
Statistics

New here?

  • To participate in discussions, please log in and introduce yourself.

See Also:



FuseTalk Standard Edition v3.2 - © 1999-2021 FuseTalk Inc. All rights reserved.

 
..