Adding 240v socket?

[Moto GBR]

Could anyone tell me what cable I should use to add an additional 240v socket to my MH? I am looking to add this to my garage area of a Bessacarr 597.

TA Steve

 

[Cush]

I’m no electrician but I would assume the same as in a house. An electricians shop would be able to give you best advice. maybe canabalise a 240 v extension lead that already has the socket at the end? I m sure someone will be along soon that could tell you what to order online. I think your post was so early it may have been pushed down the list.

 

[Raul]

If it’s a single socket, 1.5mm2 flex will be fine, if it’s a double then 2.5mm2 flex. Don’t forget ferrule pins on flex stranded wire.

 

[herald_400rl]

If it’s a single socket, 1.5mm2 flex will be fine, if it’s a double then 2.5mm2 flex. Don’t forget ferrule pins on flex stranded wire.

Is standard solid core T+E not used because of the movement?

 

[tonyidle]

Is standard solid core T+E not used because of the movement?

Correct. Copy existing installation.

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[Tombola]

Is standard solid core T+E not used because of the movement?

no exactly the opposite on a moving vehicle, solid T+E can crack over time

 

[Tombola]

Correct. Copy existing installation.

I think tonyidle read your post as "NOT" to be used

 

[MisterB]

1.5mm will carry up to 16A ..... Most EHU supplies are less than that, however the cost difference between 2.5 and 1.5mm prob makes it not worth using 1.5mm

 

[Cush]

I m sure someone will be along soon that could tell you what to order online.

Told you so . They’re a good bunch really aren’t they. Always an education, this place.

 

[herald_400rl]

Sorry I meant as in "do not use" standard solid core as apposed to "should it not be used instead of".
So use flex not t+e, a genuine question of is flex used because solid cores will work-harden and crack.

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[Tombola]

Yes solid core not good...flex multi strand good

solid core = cracks....

flex = no cracks (or maybe 1 or 2 strands)

 

[autorouter]

Could anyone tell me what cable I should use to add an additional 240v socket to my MH? I am looking to add this to my garage area of a Bessacarr 597.

I would use 1.5mm2 3-core flexible cable, the standard stuff that's used for lots of appliances and extension cables.

Cable is sized by cross-sectional area (CSA), not diameter. CSA is measured in square millimetres, usually abbreviated to mm2. However sometimes the '2' is missing so that it's written as just mm, which can be confusing if you don't know about CSA. Actually in this case it doesn't make a lot of difference, because the diameter of a 1.5mm2 wire is about 1.4mm.

Anyway, use 1.5mm2 flex. Not smaller, it's not as strong. And no need for larger in a motorhome with a 16A max breaker on the inlet.

 

[DerryW]

2.5mm2 flex every day.

 

[Raul]

2.5mm2 flex every day.

Why? What’s the reason?

 

[Lenny HB]

2.5mm2 flex every day.

Heavy, awkward to work with and unnecessary.

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[Moto GBR]

Thanks for all the input

 

[Odd-no-more]

For my recent wiring modification I bought 2.5mm flex but all the original wiring is 1.5mm so not needed and more difficult to connect as well as more expensive

 

[Tombola]

2.5mm2 flex every day.

Payload my friend...payload.

there is a reason autotrail use 0.001mm

oh hang on !!!!

 

[autorouter]

With the full 16A current the voltage drop along 25m of 1.5mm2 cable is 3.8%, so for a 25m hookup cable it is recommended that 2.5mm2 cable is used, which reduces the voltage drop to 2.3%. The idea is to keep the voltage drop to 3% or less. That covers the rare cases where the full 16A is used from a hookup post.

With the full 16A current the voltage drop along 15m of 1.5mm2 cable is the same, about 2.3%. I think it's very unlikely that a cable run inside a motorhome will be longer than 15m, so I can't think of any situation where a cable thicker than 1.5mm2 is required.