catenary wire heights on bungalows

[Gavin John Hyde]

Putting together plans for a job in few weeks. Will need to run a new catenary
wire over to the garage from bungalow, length approximately 6m.
Was a previous wire in place before the old supply was removed. it is now sagging and not fit for purpose.
Cable will cross over edge of lawn and wont cross above any parking area or be likely to be hit by anything.
Whats the minimum height cables should be suspended? all the references in the various books give a minimum height of 3.5m I can not achieve due to it being a small bungalow, cable exit poitn from house and fuseboard is a small pantry type room, highest point I can reach here is 2.65m
Digging and burying an SWA is not possible due to ground conditions and property being used by a care company to look after a disabled resident. most of garden is concrete or paved and very smooth and flat. told it cant come up due to wheelchair use etc..

Do I just record it as a departure on the certificate?

 

[buzzlightyear]

the wire needs to be has higher has a pylon .lol.has long its has high for the customer to hang the washing on .

 

[Megawatt]

Putting together plans for a job in few weeks. Will need to run a new catenary
wire over to the garage from bungalow, length approximately 6m.
Was a previous wire in place before the old supply was removed. it is now sagging and not fit for purpose.
Cable will cross over edge of lawn and wont cross above any parking area or be likely to be hit by anything.
Whats the minimum height cables should be suspended? all the references in the various books give a minimum height of 3.5m I can not achieve due to it being a small bungalow, cable exit poitn from house and fuseboard is a small pantry type room, highest point I can reach here is 2.65m
Digging and burying an SWA is not possible due to ground conditions and property being used by a care company to look after a disabled resident. most of garden is concrete or paved and very smooth and flat. told it cant come up due to wheelchair use etc..

Do I just record it as a departure on the certificate?

Gavin in the USA it is 3.5 meters minimum

 

[Strima]

If you can't achieve 3.5m then I'd say you go as high as you can, what are the risks at 2.65m?

Also what will the height be in the middle with cable sag? Will this pose a risk?

417.3 basically says refer to ESQCR 2002 schedule 2 but that seems to refer more to overhead distribution for HV supplies.

 

[Gavin John Hyde]

If you can't achieve 3.5m then I'd say you go as high as you can, what are the risks at 2.65m?

Also what will the height be in the middle with cable sag? Will this pose a risk?

417.3 basically says refer to ESQCR 2002 schedule 2 but that seems to refer more to overhead distribution for HV supplies.

Thats where I was a bit bemused too, it doesnt really cover a domestic setting across a back garden.
In terms if sag I will only be putting 3 core 2.5mm H07 on the wire. Not too heavy. Have done longer runs before with H07.
Did have a liitle booklet that allowed you to calculate the sag and stretch in the wire when suspended depending on the the type of cable.wish i kept it now.

 

[telectrix]

can you not fit a bit of strut on a bracket to raise the height; something like an aerial fixing?

 

[Toneyz]

Under the 15th was there not a reg for minimum hights as well as the depth of buried cables, I am sure both have been replaced with suitable height and depth?

 

[GeorgeCooke]

Gavin in the USA it is 3.5 meters minimum

That has no relevance in the UK.

 

[littlespark]

Get one of those rubber strips that you run across an office floor to contain cables.
And if its for a wheelchair user.... it doubles as a speedbump.

Noooo..... you can't say that!!!!!

 

[Megawatt]

Get one of those rubber strips that you run across an office floor to contain cables.
And if its for a wheelchair user.... it doubles as a speedbump.

Noooo..... you can't say that!!!!!

Little spark that comment was very disrespectful, my brother had a leg amputation and in a wheelchair. Never make fun of the less fortunate

 

[littlespark]

I apologise, @Megawatt , I didn’t mean to offend.

 

[Gavin John Hyde]

can you not fit a bit of strut on a bracket to raise the height; something like an aerial fixing?

Did consider that as it happens. Its an option.

 

[Spoon]

Little spark that comment was very disrespectful, my brother had a leg amputation and in a wheelchair. Never make fun of the less fortunate

You have to get used to our dry British humour mate. I don't think that @littlespark meant any disrespect by it... My northern mate takes the micky out of me and I'm less fortunate.... He's waaaay better looking than me...

 

[Megawatt]

You have to get used to our dry British humour mate. I don't think that @littlespark meant any disrespect by it... My northern mate takes the micky out of me and I'm less fortunate.... He's waaaay better looking than me...

Thanks and no problem littlespark

 

[Megawatt]

Thanks and no problem littlespark

Spoon I know that he meant no harm but I love chatting with you guys

 

[MJPD29]

Spoon I know that he meant no harm but I love chatting with you guys

Megawatt where are you from

 

[Megawatt]

Megawatt where are you from

Matthew I’m from North Carolina in the USA and I joined this forum to learn how other countries do electrical and I’m impressed at how you guys investigate matters of electrical. I’ve had 14 heart attacks and l look forward to chatting with y’all since I can’t work a full time job

 

[Spoon]

Spoon I know that he meant no harm but I love chatting with you guys

We are a great bunch here.. Especially me...

 

[Megawatt]

That has no relevance in the UK.

What’s your code book called, I would like to buy one so I’ll know what y’all are talking about

 

[Gavin John Hyde]

What’s your code book called, I would like to buy one so I’ll know what y’all are talking about

BS7671 dont buy it. Just download the draft copy thats floating around internet. The book is about £60+

 

[Megawatt]

BS7671 dont buy it. Just download the draft copy thats floating around internet. The book is about £60+

Thank you all for the advice

 

[buzzlightyear]

You have to get used to our dry British humour mate. I don't think that @littlespark meant any disrespect by it... My northern mate takes the micky out of me and I'm less fortunate.... He's waaaay better looking than me...

well spoon see if the yank doodle get this one ,lol.

 

[MJPD29]

What’s your code book called, I would like to buy one so I’ll know what y’all are talking about

It's not very exciting reading also

 

[GeorgeCooke]

Matthew I’m from North Carolina in the USA and I joined this forum to learn how other countries do electrical and I’m impressed at how you guys investigate matters of electrical. I’ve had 14 heart attacks and l look forward to chatting with y’all since I can’t work a full time job

I am also interested to in other countries methods. I have a book on French wiring (in English for expats). I like their idea of switch wires being identified by being orange or violet, both being used on two way switching circuits for the strappers. Of course this can only really be done using singles in conduit.
Last year on a trip to New York bought a book called Wiring Simplified in Home Depot. Looking through it I was surprised to see that when sockets (receptacles) are wired in line the favoured method was to pigtail wires together using wire nuts in the back box, only taking one set of wires to the receptacle. Further reading I found out about three wire circuits, basically two 120v 180˚phases carried on three wires often to different single phase receptacles in the same room and the importance of retaining the integrity of the neutral if sockets are removed. Surprised that sometimes that two outlets on a single receptacle can also be on different phases after cutting the links between the two. I have seen 6 way blocks with a twin plug on the back designed to go into a double outlet. Do these have three on each plug otherwise I can sparks flying if they are just paralleled? Also surprised that receptacles are mandatory in bathrooms, all be it GFI protected, something that would horrify sparks over here. I don't like the US 2 pin polarised plug with just two extra pips on the side of the neutral pin, too easy to default with say a nail file. Much better if the entire pin was wider.

 

[Megawatt]

View attachment 51383
well spoon see if the yank doodle get this one ,lol.

i got up this morning and had to look at that picture lm speechless

BS7671 dont buy it. Just download the draft copy thats floating around internet. The book is about £60+

BS7671 dont buy it. Just download the draft copy thats floating around internet. The book is about £60+

View attachment 51383
well spoon see if the yank doodle get this one ,lol.

View attachment 51383
well spoon see if the yank doodle get this one ,lol.

It's not very exciting reading also

I am also interested to in other countries methods. I have a book on French wiring (in English for expats). I like their idea of switch wires being identified by being orange or violet, both being used on two way switching circuits for the strappers. Of course this can only really be done using singles in conduit.
Last year on a trip to New York bought a book called Wiring Simplified in Home Depot. Looking through it I was surprised to see that when sockets (receptacles) are wired in line the favoured method was to pigtail wires together using wire nuts in the back box, only taking one set of wires to the receptacle. Further reading I found out about three wire circuits, basically two 120v 180˚phases carried on three wires often to different single phase receptacles in the same room and the importance of retaining the integrity of the neutral if sockets are removed. Surprised that sometimes that two outlets on a single receptacle can also be on different phases after cutting the links between the two. I have seen 6 way blocks with a twin plug on the back designed to go into a double outlet. Do these have three on each plug otherwise I can sparks flying if they are just paralleled? Also surprised that receptacles are mandatory in bathrooms, all be it GFI protected, something that would horrify sparks over here. I don't like the US 2 pin polarised plug with just two extra pips on the side of the neutral pin, too easy to default with say a nail file. Much better if the entire pin was wider.

View attachment 51383
well spoon see if the yank doodle get this one ,lol.

I am also interested to in other countries methods. I have a book on French wiring (in English for expats). I like their idea of switch wires being identified by being orange or violet, both being used on two way switching circuits for the strappers. Of course this can only really be done using singles in conduit.
Last year on a trip to New York bought a book called Wiring Simplified in Home Depot. Looking through it I was surprised to see that when sockets (receptacles) are wired in line the favoured method was to pigtail wires together using wire nuts in the back box, only taking one set of wires to the receptacle. Further reading I found out about three wire circuits, basically two 120v 180˚phases carried on three wires often to different single phase receptacles in the same room and the importance of retaining the integrity of the neutral if sockets are removed. Surprised that sometimes that two outlets on a single receptacle can also be on different phases after cutting the links between the two. I have seen 6 way blocks with a twin plug on the back designed to go into a double outlet. Do these have three on each plug otherwise I can sparks flying if they are just paralleled? Also surprised that receptacles are mandatory in bathrooms, all be it GFI protected, something that would horrify sparks over here. I don't like the US 2 pin polarised plug with just two extra pips on the side of the neutral pin, too easy to default with say a nail file. Much better if the entire pin was wider.

We have tamper proof receptacles so

 

[Megawatt]

I am also interested to in other countries methods. I have a book on French wiring (in English for expats). I like their idea of switch wires being identified by being orange or violet, both being used on two way switching circuits for the strappers. Of course this can only really be done using singles in conduit.
Last year on a trip to New York bought a book called Wiring Simplified in Home Depot. Looking through it I was surprised to see that when sockets (receptacles) are wired in line the favoured method was to pigtail wires together using wire nuts in the back box, only taking one set of wires to the receptacle. Further reading I found out about three wire circuits, basically two 120v 180˚phases carried on three wires often to different single phase receptacles in the same room and the importance of retaining the integrity of the neutral if sockets are removed. Surprised that sometimes that two outlets on a single receptacle can also be on different phases after cutting the links between the two. I have seen 6 way blocks with a twin plug on the back designed to go into a double outlet. Do these have three on each plug otherwise I can sparks flying if they are just paralleled? Also surprised that receptacles are mandatory in bathrooms, all be it GFI protected, something that would horrify sparks over here. I don't like the US 2 pin polarised plug with just two extra pips on the side of the neutral pin, too easy to default with say a nail file. Much better if the entire pin was wider.

No they don’t make 3 ways and with the filing thE NEC now requires tamper proof receptacles so nail filing would just ruin them

 

[Megawatt]

No they don’t make 3 ways and with the filing thE NEC now requires tamper proof receptacles so nail filing would just ruin them

the GFCI is required for bathrooms because women have to use their hair dryers and they also have to be within 3 feet on both sides of your kitchen sinks. Why would that make you horrified

 

[Megawatt]

It's not very exciting reading also

I looked up the bs7671 and can get it through amazon but i read a lot about over voltage. I will get one

 

[Spoon]

I looked up the bs7671 and can get it through amazon but i read a lot about over voltage. I will get one

The 18th edition is the latest edition. It has a blue cover.

 

[GeorgeCooke]

No they don’t make 3 ways and with the filing thE NEC now requires tamper proof receptacles so nail filing would just ruin them

Don't followthat. Surely a filed down polarised plug is the same as a non polarised plug, and there are still plenty of those about, iphone chargers come to mind. Are you saying tamper proof receptacles would not accept them?

 

[GeorgeCooke]

the GFCI is required for bathrooms because women have to use their hair dryers and they also have to be within 3 feet on both sides of your kitchen sinks. Why would that make you horrified

GFI would obviously make them safer, but sockets in bathrooms are frowned upon here. Women have to use their hairdryers in the bedroom.

 

[Megawatt]

Don't followthat. Surely a filed down polarised plug is the same as a non polarised plug, and there are still plenty of those about, iphone chargers come to mind. Are you saying tamper proof receptacles would not accept them?

They work like a normal receptacle and the reason for tamper proof is mainly is because children are curious and stick things in the receptacles so unless both prongs are inserted it will not have no power on it

 

[Risteard]

That has no relevance in the UK.

I actually found it interesting because, as far as I'm aware, the NEC does not derive from the IEC. Also that a metric height is used.

 

[oracle]

Get one of those rubber strips that you run across an office floor to contain cables.
And if its for a wheelchair user.... it doubles as a speedbump.

Noooo..... you can't say that!!!!!

Hey I’m using a power chair and face worse things than that! Some dropped kerbs, many shop entrances, etc. My wife will say I probably need a speed bump, I’m still trying to wheelie the damn thing !

 

[Megawatt]

Don't followthat. Surely a filed down polarised plug is the same as a non polarised plug, and there are still plenty of those about, iphone chargers come to mind. Are you saying tamper proof receptacles would not accept them?

Tamper proof receptacles will take anything a regular receptacle does

 

[Megawatt]

Tamper proof receptacles will take anything a regular receptacle does

It just don’t energize until you plug something into it. If you tried to file on it you would cause damage. I’ve never tried to mess with one, just install them