Solar panel

[PeteT1201]

What size in watts would be best to fit to my Hymer? Thanks

 

[jumar]

What size in watts would be best to fit to my Hymer? Thanks

The physical size of Panel would be a starting point.....how much space on the roof do you have?

 

[cyberyacht]

The received wisdom is "as much as your wallet or roof can take" particularly if you intend spending any length of time off-grid

 

[Two on Tour]

Which Hymer and what's on your roof and where on the roof will give us an idea of what can go up there.
As well as solar, you are going to need battery capacity to make use of what you put on your roof.
You will also need to work out what your electrical consumption requirements are from the the devices and equipment you will be using on a day to day basis to calculate your solar and battery sizing.

 

[The Wino]

I would work backwards from what you intend to use plus an extra bit. I suspect that a lot have way more solar than they use.

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[Richard n Ann]

I worked out what our approximate usage would be then doubled it.
Result? We've got twice as much as we need it's good for cloudy days though

 

[tonyidle]

I suspect that a lot have way more solar than they use.

Only if it's always sunny.

 

[tonyidle]

Panels are cheap, controllers are reasonable, kits are expensive, labour is expensive. You cannot have too much solar. So if you cannot fit your own it pays to go for as much as will fit on the roof as labour costs will be roughly the same no matter how big the panel or how many you install.

 

[Geistguy]

As big as you can, even if it's two smaller panels.

 

[Stealaway]

What size in watts would be best to fit to my Hymer? Thanks

Measure what gaps you have around roof lights, vents and aerials.
Lots of different size panels available.
200watts minimum with a dual battery solar controller -plus two large leisure batteries.

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[two]

Enough to replace what you use in a day.

The problem starts if you want to recover that when up t'North in Winter. That's a time when there's next to no sunshine to harvest and you're using most power (everything working against you).
If you only venture out in Summer, and go South, 100W would do.

If you move-on every other day or so, you may not need solar at all.
I'd wait. Try without and see how you get on.

 

[mitzimad]

200w is a good point to start at coupled to 200ah of battery less if its gell or lithium capacity unless you intend to be heavy power users

 

[The Wino]

200w is a good point to start at coupled to 200ah of battery less if its gell or lithium capacity unless you intend to be heavy power users

It would be well over the top for us. Were still on our maufacturers original 90ah battery 7 years on. I fitted a 100w panel last year in lockdown boredom but never ran out of battery without one

 

[mitzimad]

It would be well over the top for us. Were still on our maufacturers original 90ah battery 7 years on. I fitted a 100w panel last year in lockdown boredom but never ran out of battery without one

we find were near the edge in winter when you need lights for the long evenings and heater running how you get by on one i dont know

 

[The Wino]

We don't use ours a lot in winter tend to drive almost every day and in winter stay more on sites. I don't think there is such a thing as a basic level everyone needs as we all use our mh different ways. If the op is getting solar because they often get to a low battery state after say 3 days off grid with little electrical demand they might only need to get a small panel. If theyre frequently getting low and are getting earache abou hair dryers and straighteners and a coffee machine and want to watch telly every night it's a different matter.

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[deleted79651]

I would work backwards from what you intend to use plus an extra bit. I suspect that a lot have way more solar than they use.

We were on EHU at the time, but we barely used 5% of the solar output each day last week [which was very grey and hammering down with rain most of the week ...]. The phones and Tablet have never been so well fed ... Even without EHU, we are struggling to drop the Lithium Battery below 95%, so we need to look at extra USB sockets and a pump connection to lift water top ups from the Jerry Can.

Steve