Rewiring - Revision history

Editor at 19:21, 2 November 2021

2021-11-02T19:21:52Z

← Older revision		Revision as of 19:21, 2 November 2021
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	* The specification of switches, sockets, and so on.		* The specification of switches, sockets, and so on.

−	= Related articles on Designing Buildings ~~Wiki~~ =	+	= Related articles on Designing Buildings =

	* Building an extension.		* Building an extension.
	* DC electricity networks.		* DC electricity networks.
		+	* Electrical contractor.
	* Electrical equipment.		* Electrical equipment.
	* Electrical installation.		* Electrical installation.

Editor at 17:17, 17 August 2021

2021-08-17T17:17:18Z

← Older revision		Revision as of 17:17, 17 August 2021
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	* Electrical safety.		* Electrical safety.
	* Electrician.		* Electrician.
		+	* Frequently Googled plumbing and electrical problems.
	* The future of electricity.		* The future of electricity.
	* Wiring.		* Wiring.

	[[Category:DCN_Definition]] [[Category:DCN_Guidance]] [[Category:Construction_techniques]] [[Category:Products_/_components]] [[Category:Property_development]]		[[Category:DCN_Definition]] [[Category:DCN_Guidance]] [[Category:Construction_techniques]] [[Category:Products_/_components]] [[Category:Property_development]]

Designing Buildings at 07:36, 12 November 2020

2020-11-12T07:36:29Z

← Older revision		Revision as of 07:36, 12 November 2020
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	* Wiring.		* Wiring.

−	[[Category:~~Construction_techniques~~]] [[Category:~~Products_/_components~~]] [[Category:~~DCN_Product_Knowledge~~]] [[Category:Property_development]]	+	[[Category:DCN_Definition]] [[Category:DCN_Guidance]] [[Category:Construction_techniques]] [[Category:Products_/_components]] [[Category:Property_development]]

Designing Buildings at 09:08, 27 February 2020

2020-02-27T09:08:43Z

← Older revision		Revision as of 09:08, 27 February 2020
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	* The specification of switches, sockets, and so on.		* The specification of switches, sockets, and so on.

−	= ~~Find out more~~ =	+	= Related articles on Designing Buildings Wiki =

−	~~=== Related articles on Designing Buildings Wiki ===~~
−
−	* Basements in buildings.
	* Building an extension.		* Building an extension.
	* DC electricity networks.		* DC electricity networks.
−	* ~~Domestic heat pumps and the electricity supply system~~.	+	* Electrical equipment.
−	* Electrical ~~drawing~~.	+	* Electrical installation.
		+	* Electrical power.
		+	* Electrical safety.
	* Electrician.		* Electrician.
−	* ~~Loft conversion~~.	+	* The future of electricity.
−	* ~~Refurbishment.~~	+	* Wiring.
−	* Remedial works.	+
−	* Renovation.	+
−	* Self-build homes: project plan.	+

−	[[Category:Construction_techniques]] [[Category:Products_/_components]] [[Category:Property_development]]	+	[[Category:Construction_techniques]] [[Category:Products_/_components]] [[Category:DCN_Product_Knowledge]] [[Category:Property_development]]

Editor at 12:56, 10 August 2018

2018-08-10T12:56:31Z

← Older revision		Revision as of 12:56, 10 August 2018
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	* Whether work is new build or extension.		* Whether work is new build or extension.
	* Whether there is a lot of preparatory work required such as chasing out plasterwork, lifting floorboards, and so on.		* Whether there is a lot of preparatory work required such as chasing out plasterwork, lifting floorboards, and so on.
−	* The specification of switches, sockets and so on.	+	* The specification of switches, sockets, and so on.

	= Find out more =		= Find out more =
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	* DC electricity networks.		* DC electricity networks.
	* Domestic heat pumps and the electricity supply system.		* Domestic heat pumps and the electricity supply system.
		+	* Electrical drawing.
	* Electrician.		* Electrician.
	* Loft conversion.		* Loft conversion.

Editor at 18:24, 9 March 2018

2018-03-09T18:24:41Z

← Older revision		Revision as of 18:24, 9 March 2018
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	{\|		{\|
−	\|Reasonable provision shall be made in the design and installation of electrical installations in order to protect persons operating, maintaining or altering the installations from fire or injury.	+	\| Reasonable provision shall be made in the design and installation of electrical installations in order to protect persons operating, maintaining or altering the installations from fire or injury.
	\|}		\|}

Line 103:		Line 103:
	* DC electricity networks.		* DC electricity networks.
	* Domestic heat pumps and the electricity supply system.		* Domestic heat pumps and the electricity supply system.
		+	* Electrician.
	* Loft conversion.		* Loft conversion.
	* Refurbishment.		* Refurbishment.

Designing Buildings at 16:48, 17 January 2017

2017-01-17T16:48:37Z

← Older revision		Revision as of 16:48, 17 January 2017
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	= Electrician or DIY =		= Electrician or DIY =

−	Part P of the building regulations covers electrical works. While minor repairs, replacement and maintenance work are not notifiable, more significant works, and work in wet areas may be ~~subject~~ require a Building Regulations application, with the work inspected before and after completion by a qualified electrician. The electrician will check compliance and issue a part P certificate.	+	Part P of the building regulations covers electrical works. While minor repairs, replacement and maintenance work are not notifiable, more significant works, and work in wet areas may be require a Building Regulations application, with the work inspected before and after completion by a qualified electrician. The electrician will check compliance and issue a part P certificate.
		+
		+	Approved document P makes clear that after the works are complete, the installation should be no more unsatisfactory that before the work was started. When extending or altering and installation, only the new work must comply with the building regulations, unless:
		+
		+	* The new work affects the safety of the existing installation, or;
		+	* The condition of the existing installation means that the new installation cannot be operated safely.

	Attempting electrical works as a DIY job, can be a false saving, and can result in dangerous defects. A common DIY fault is running the cable at angles across walls. This is in contravention of wiring regulations which require all cables buried in walls to run vertically or horizontally from sockets.		Attempting electrical works as a DIY job, can be a false saving, and can result in dangerous defects. A common DIY fault is running the cable at angles across walls. This is in contravention of wiring regulations which require all cables buried in walls to run vertically or horizontally from sockets.

Designing Buildings at 16:43, 17 January 2017

2017-01-17T16:43:45Z

← Older revision		Revision as of 16:43, 17 January 2017
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	Rewiring will usually be necessary if a building has not been rewired within the last 25-30 years. It may also be appropriate if major remodelling work is being undertaken such as building extensions or conversions.		Rewiring will usually be necessary if a building has not been rewired within the last 25-30 years. It may also be appropriate if major remodelling work is being undertaken such as building extensions or conversions.

−	Such works may fall within the requirements of the Building Regulations Part P: Electrical Safety.	+	Such works may fall within the requirements of the Building Regulations Part P: Electrical Safety. This requires that:
		+
		+	{\|
		+	\|Reasonable provision shall be made in the design and installation of electrical installations in order to protect persons operating, maintaining or altering the installations from fire or injury.
		+	\|}

	Approved document P: Electrical safety, dwellings, provides guidance for how Part P can be satisfied in common building situations in dwellings.		Approved document P: Electrical safety, dwellings, provides guidance for how Part P can be satisfied in common building situations in dwellings.

Designing Buildings at 16:40, 17 January 2017

2017-01-17T16:40:31Z

← Older revision		Revision as of 16:40, 17 January 2017
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	Such works may fall within the requirements of the Building Regulations Part P: Electrical Safety.		Such works may fall within the requirements of the Building Regulations Part P: Electrical Safety.
		+
		+	Approved document P: Electrical safety, dwellings, provides guidance for how Part P can be satisfied in common building situations in dwellings.

	= Has the building been rewired? =		= Has the building been rewired? =

Designing Buildings at 15:50, 17 January 2017

2017-01-17T15:50:01Z

← Older revision		Revision as of 15:50, 17 January 2017
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	The time taken will also vary, although the same size house might take around four or five days.		The time taken will also vary, although the same size house might take around four or five days.

−	=== ~~Rewiring work~~ ===	+	=== Works ===

	Rewiring work is categorised as first fix and second fix.		Rewiring work is categorised as first fix and second fix.
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	First fix is generally taken to mean the works before plastering. Running new cabling will involve lifting floor coverings, floorboards and possibly skirting boards, as well as routing out channels in the walls. First fix work also involves fitting new back boxes for sockets and switches.		First fix is generally taken to mean the works before plastering. Running new cabling will involve lifting floor coverings, floorboards and possibly skirting boards, as well as routing out channels in the walls. First fix work also involves fitting new back boxes for sockets and switches.

−	~~The second~~ fix ~~work~~ takes place once the building has been re-plastered, flooring replaced, ceilings filled and made good, and so on~~. Second fix work includes the following~~:	+	Second fix takes place once the building has been re-plastered, flooring replaced, ceilings filled and made good, and so on, and might include:

	* Fitting sockets and switch plates.		* Fitting sockets and switch plates.
−	* ~~Light~~ fittings.	+	* Installing light fittings.
−	* ~~Fixing in place~~ the consumer unit.	+	* Installing the consumer unit.
−	* ~~Wiring~~ kitchen and bathroom fittings (electric fans, cookers, extractor hoods, showers, immersion heater, and so on).	+	* Connecting kitchen and bathroom fittings (electric fans, cookers, extractor hoods, showers, immersion heater, and so on).

	=== Earth bonding ===		=== Earth bonding ===

−	~~For an electrical installation to be safe, earth~~ bonding (also known as cross bonding) ~~is vital. This~~ ensures that ~~in the case of~~ a fault ~~occurring~~ which causes metal components (such as plumbing, boiler casing, radiators) to become live, they do not pose an electrocution hazard.	+	Earth bonding (also known as cross bonding) ensures that if a fault occurs which causes metal components (such as plumbing, boiler casing, radiators and so on) to become live, they do not pose an electrocution hazard.

	Underneath sinks or baths, metal clamps will often be placed around the copper pipes with green-and-yellow striped earth cables. All pipes leading to and from the boiler and heating systems need earth bonding. Buildings using plastic instead of copper pipes require the mains stopcock to be earthed rather than appliances.		Underneath sinks or baths, metal clamps will often be placed around the copper pipes with green-and-yellow striped earth cables. All pipes leading to and from the boiler and heating systems need earth bonding. Buildings using plastic instead of copper pipes require the mains stopcock to be earthed rather than appliances.
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	=== Rewiring in wet areas ===		=== Rewiring in wet areas ===

−	Wet areas offer the greatest risk of electrocution and so extra ~~restrictions apply~~. Sockets for shavers are permitted, away from bath and shower splash zones, but no other power sockets. Switches should be pull-cord operation or battery-powered IR-type switches.	+	Wet areas offer the greatest risk of electrocution and so extra precautions are necessary. Sockets for shavers are permitted away from bath and shower splash zones, but no other power sockets. Switches should be pull-cord operation or battery-powered IR-type switches.

	Electrical appliances, including showers, lighting fittings and ventilation fans, must be appropriately protected from moisture, with an appropriate Ingress Protection (IP) number.		Electrical appliances, including showers, lighting fittings and ventilation fans, must be appropriately protected from moisture, with an appropriate Ingress Protection (IP) number.
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	= Electrician or DIY =		= Electrician or DIY =

−	Part P covers ~~DIY~~ electrical works. While repairs, replacement and maintenance work are not notifiable, work in wet areas ~~must~~ be subject to a Building Regulations application, with the work inspected before and after completion by a qualified electrician. The electrician will check compliance and issue a ~~safety~~ certificate.	+	Part P of the building regulations covers electrical works. While minor repairs, replacement and maintenance work are not notifiable, more significant works, and work in wet areas may be subject require a Building Regulations application, with the work inspected before and after completion by a qualified electrician. The electrician will check compliance and issue a part P certificate.

−	A common DIY ~~pitfall~~ is ~~to save time and cable by~~ running the cable at angles across walls. This is in contravention of wiring regulations which require all cables buried in walls to run vertically or horizontally from sockets.	+	Attempting electrical works as a DIY job, can be a false saving, and can result in dangerous defects. A common DIY fault is running the cable at angles across walls. This is in contravention of wiring regulations which require all cables buried in walls to run vertically or horizontally from sockets.

−	~~Electricians~~ often work to a fixed price on a supply-and-fix basis. This means that they provide labour and materials. ~~Price~~ will be calculated ~~using measured rates~~ according to ~~the following~~:	+	Qualified electricians often work to a fixed price on a supply-and-fix basis. This means that they provide both labour and materials. The price will be calculated according to:

	* How long they expect the work to take.		* How long they expect the work to take.
−	* ~~Number~~ of circuits.	+	* The number of circuits.
−	* ~~Number~~ of power points, light fittings and switches.	+	* The number of power points, light fittings and switches.
	* Whether work is new build or extension.		* Whether work is new build or extension.
	* Whether there is a lot of preparatory work required such as chasing out plasterwork, lifting floorboards, and so on.		* Whether there is a lot of preparatory work required such as chasing out plasterwork, lifting floorboards, and so on.
		+	* The specification of switches, sockets and so on.

	= Find out more =		= Find out more =